CN108129056A - A kind of special water-reducing agent of railway tunnel construction gunite concrete - Google Patents
A kind of special water-reducing agent of railway tunnel construction gunite concrete Download PDFInfo
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- CN108129056A CN108129056A CN201810027767.1A CN201810027767A CN108129056A CN 108129056 A CN108129056 A CN 108129056A CN 201810027767 A CN201810027767 A CN 201810027767A CN 108129056 A CN108129056 A CN 108129056A
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- agent
- water
- reducing agent
- concrete
- gunite concrete
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- 239000004567 concrete Substances 0.000 title claims abstract description 79
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 58
- 239000011378 shotcrete Substances 0.000 title claims abstract description 53
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 239000004034 viscosity adjusting agent Substances 0.000 claims abstract description 19
- 239000004615 ingredient Substances 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 102
- 239000002253 acid Substances 0.000 claims description 70
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 28
- 239000012452 mother liquor Substances 0.000 claims description 24
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 21
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 21
- 239000000126 substance Substances 0.000 claims description 21
- 239000003999 initiator Substances 0.000 claims description 20
- -1 methacrylic sulfonic acids Chemical class 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 17
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 16
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical class OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 15
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 claims description 15
- 230000018044 dehydration Effects 0.000 claims description 15
- 238000006297 dehydration reaction Methods 0.000 claims description 15
- 235000011087 fumaric acid Nutrition 0.000 claims description 15
- 150000008064 anhydrides Chemical class 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000013329 compounding Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 9
- 150000002238 fumaric acids Chemical class 0.000 claims description 6
- 239000003570 air Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000000977 initiatory effect Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 150000002170 ethers Chemical class 0.000 claims description 4
- 239000004816 latex Substances 0.000 claims description 4
- 229920000126 latex Polymers 0.000 claims description 4
- 150000002632 lipids Chemical class 0.000 claims description 4
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 4
- 229940075065 polyvinyl acetate Drugs 0.000 claims description 4
- 239000011118 polyvinyl acetate Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 3
- 229940043237 diethanolamine Drugs 0.000 claims description 3
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 3
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 3
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 3
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000001397 quillaja saponaria molina bark Substances 0.000 claims description 3
- 229930182490 saponin Natural products 0.000 claims description 3
- 125000001273 sulfonato group Chemical class [O-]S(*)(=O)=O 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- PHTQWCKDNZKARW-UHFFFAOYSA-N isoamylol Chemical compound CC(C)CCO PHTQWCKDNZKARW-UHFFFAOYSA-N 0.000 claims 6
- 208000005156 Dehydration Diseases 0.000 claims 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 2
- 229910052708 sodium Inorganic materials 0.000 claims 2
- 239000011734 sodium Substances 0.000 claims 2
- 241000255964 Pieridae Species 0.000 claims 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 7
- 230000002411 adverse Effects 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 18
- 241000220225 Malus Species 0.000 description 12
- 150000001336 alkenes Chemical class 0.000 description 12
- JPAOMENBKRZQDR-UHFFFAOYSA-N CC=CC.[Na] Chemical compound CC=CC.[Na] JPAOMENBKRZQDR-UHFFFAOYSA-N 0.000 description 9
- 239000001530 fumaric acid Substances 0.000 description 9
- ASUAYTHWZCLXAN-UHFFFAOYSA-N prenol Chemical compound CC(C)=CCO ASUAYTHWZCLXAN-UHFFFAOYSA-N 0.000 description 9
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 9
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 9
- 239000004568 cement Substances 0.000 description 8
- 150000007513 acids Chemical class 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 241000370738 Chlorion Species 0.000 description 4
- 238000010526 radical polymerization reaction Methods 0.000 description 4
- 235000021016 apples Nutrition 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 3
- LHTVMBMETNGEAN-UHFFFAOYSA-N pent-1-en-1-ol Chemical compound CCCC=CO LHTVMBMETNGEAN-UHFFFAOYSA-N 0.000 description 3
- 229940051841 polyoxyethylene ether Drugs 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
- 230000003467 diminishing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 235000002906 tartaric acid Nutrition 0.000 description 2
- 239000011975 tartaric acid Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to technical field of concrete new material, more particularly to a kind of special water-reducing agent of railway tunnel construction gunite concrete, present invention eliminates retarder for the adverse effect of accelerator, the stabilization of the long period of working performance of concrete is kept on the basis of not influencing concrete and condensing performance in itself, and pass through the addition of viscosity modifier and the adjustment of air content makes gunite concrete have preferable cohesiveness to be more easy to be adhered on tunnel palisades, reduce the quantity that rebound of shotcrete is fallen, achieve the purpose that reduce gunite concrete waste and increase concrete durability, simultaneously gunite concrete early strength is improved by being suitably added strong ingredient of organic morning.
Description
Technical field
The invention belongs to technical field of concrete new material, and in particular to a kind of railway tunnel construction gunite concrete is special
Water-reducing agent.
Background technology
Gunite concrete is a kind of concrete with rapid hardening property for reinforcing and protecting structure or rock surface.It should
Technology be by spraying machinery, will be by the cement of certain match ratio, sand, stone and additional using compressed air or other power
The mixs such as agent are ejected by jet pipe by spray plane, and condensation is hardened within very short several minutes and molding concrete is mended
Strong reinforcement material.Gunite concrete does not have to template generally, has reached investment reduction, has reduced cost, accelerates construction progress, intensity
Increase the features such as fast, density is good, preparation of construction is simple, adaptability is stronger, there is supporting role, packing action, isolation to make
With and transformation.These advantages of gunite concrete cause it to be widely used in mine, vertical shaft gallery, traffic tunnel, water conservancy project
The underground structures such as culvert and concrete support or combined bolting and shotcrete；Underground tank, oil tank, large-scale pipeline water-tight concrete apply
Work；The Rapid-Repair of various industry furnace linings；Concrete structures pour with repairing etc..
As country builds high-speed railway energetically, gunite concrete is even more to be widely used in railway tunnel construction.But in mesh
In preceding construction of shotcrete, there are the problems such as early strength is low, springback capacity is big, endurance quality is poor for gunite concrete.It causes
One of the main reason for these problems be water-reducing agent used in current railway tunnel construction gunite concrete or with other constructions
Water-reducing agent used in the concrete at position is consistent, and gunite concrete is as a kind of its mix-design of special concrete and commonly
Railway concrete has apparent difference, and gunite concrete main feature has gel material content high and general do not use blends
Material, ballast grain sizes small (5mm-10mm), composition material large specific surface area, needs to have good glue at high sand coarse aggregate ratio (more than 50%)
Poly- property does not influence concrete cement itself setting time etc., and common railway concrete often adds in slow setting component with water-reducing agent
Inhibit hydrated cementitious, achieve the purpose that the working performance of concrete long period keep, the rush of accelerator can be coagulated effect generate compared with
Big adverse effect causes the problems such as concrete coagulation is slow, springback capacity is big, getting up early strength development is slow, and gunite concrete forms
Material specific surface area is big, for water-reducing agent degree of absorption compared with normal concrete bigger, using general water-reducing agent it is difficult to ensure that injection
Working performance of concrete meets construction requirement.The special type of gunite concrete determines the special type of the water-reducing agent used in it.
The present invention proposes a kind of special water-reducing agent of railway tunnel construction gunite concrete to be existed to solve gunite concrete
The problems such as early strength is low, springback capacity is big, endurance quality is poor.
Invention content
The present invention is in order to solve the above technical problems, provide a kind of special diminishing of railway tunnel construction gunite concrete
Agent.
It is realized particular by following technical scheme：
A kind of special water-reducing agent of railway tunnel construction gunite concrete, the special water-reducing agent is by common poly-carboxylic high-performance
Water-reducing agent mother liquor, TW-BM seriation polycarboxylic acid slump retaining agents mother liquor, viscosity modifier, air entraining agent, early strength agent compounding composition, each group
Point being converted into the proportioning after solid content is：Common high performance water reducing agent of polyocarboxy acid mother liquor 3%-8%；TW-BM seriation polycarboxylic acids
Slump retaining agent 6%-15%, air entraining agent 0.05%-0.3%, viscosity modifier 0.5%-1%, early strength agent 0.5%-2%, remaining be
Water.
Further, the common high performance water reducing agent of polyocarboxy acid mother liquor, subtracts including lipid or ethers poly-carboxylic high-performance
Aqua mother liquor.
Further, special water-reducing agent chlorion folding solid content is less than 0.05% after the compounding.
Further, the TW-BM series polycarboxylic acid slump retaining agent, by following component component：TW-BMA types 40-50%, TW-
BMB type 40-50%, TW-BMC types 0-20% is mixed.
Further, the TW-BMA types polycarboxylic acid slump retaining agent, including following component, 3500 molecular weight of 15%-18% are different
Pentenol polyoxyethylene ether, the 2400 molecular weight methyl allyl polyoxyethylene ethers of 15%-17%, 4.7%-5% acrylic acid,
2%-2.5% hydroxy-ethyl acrylates, 1%-1.7% hydroxypropyl acrylates, 0%-0.5% fumaric acids, 0.5%-1% dehydration apples
The monomeric substances such as tartaric acid acid anhydride, 1%-2% methylpropene sodium sulfonates, 0.1-0.5% ammonium persulfate initiators, remainder are water.
Further, the TW-BMB types polycarboxylic acid slump retaining agent, including following component, 3500 molecular weight of 19%-22% are different
Pentenol polyoxyethylene ether, the 2400 molecular weight methyl allyl polyoxyethylene ethers of 17%-20%, 3.5%-4% acrylic acid,
3%-3.5% hydroxy-ethyl acrylates, 1.7%-2% hydroxypropyl acrylates, 0%-0.5% fumaric acids, 0.5%-1% dehydration apples
The monomeric substances such as tartaric acid acid anhydride, 1.5%-2.0% methylpropene sodium sulfonates, 0.1-0.5% ammonium persulfate initiators, remainder are
Water.
Further, the TW-BMC types polycarboxylic acid slump retaining agent, including following component, 3500 molecular weight of 23%-25% are different
Pentenol polyoxyethylene ether, the 2400 molecular weight methyl allyl polyoxyethylene ethers of 18%-20%, 1.7%-3% acrylic acid,
3%-4% hydroxy-ethyl acrylates, 2.7%-3% hydroxypropyl acrylates, 0%-0.5% fumaric acids, 0.5%-1% dehydration apples
The monomeric substances such as acid anhydrides, 1%-3% methylpropene sodium sulfonates, 0.1-0.5% ammonium persulfate initiators, remainder are water.
Further, the TW-BMA types polycarboxylic acid slump retaining agent, TW-BMB types polycarboxylic acid slump retaining agent, TW-BMC type polycarboxylic acids
Slump retaining agent, according to proportioning under 0.1-0.5% ammonium persulfate initiations, using the non-dropwise addition technique of one-step method, in certain temperature
Under the conditions of synthesized in the form of free radical polymerization, low water is put into reaction kettle first, puts into all kinds of monomeric substances heating stirring extremely
System temperature reaches 60 DEG C and puts into ammonium persulfate initiator in three times, and each input amount is consistent, is spaced 30 minutes, and ammonium persulfate is thrown
Insulation reaction 3 hours after putting.
It is matched and adjusted by monomeric substance, the different seriation slump retaining agent product of performance characteristics, seriation can be produced
Polycarboxylic acid slump retaining agent has different initial water-reducing rates, is released in the strong basicity environment of cement liquid phase with different release profiles
Releasing has the function of the molecular structure of diminishing, since rate of release is different with the time for reaching release peak value, passes through several differences
Slump retaining agent is with the use of can realize that not influencing the concrete work state long period under the premise of concrete coagulating time stablizes
It keeps.Wherein, TW-BMA types, TW-BMB types, TW-BMC types, release time to peak is respectively 60 in the experiment of reference water cement paste
Minute, 90 minutes, 120 minutes.
Further, the viscosity modifier be technical grade water-soluble poly vinyl acetate redispersable latex powder, it is 20 sub very much
Measure any one of hydroxypropyl methyl cellulose technical grade product.
Further, the air entraining agent includes fatty alcohol lauryl sodium sulfate, three-iron saponin(e cocoyl amber sulfonate class
Or any one of fatty alcohol-ether sodium sulfate class.
Further, the early strength agent is any one of technical grade diethanol amine, triethanolamine, triisopropanolamine.
Advantageous effect, the present invention have the following advantages：Present invention eliminates retarder for the adverse effect of accelerator,
Concrete is not influenced and condenses the stabilization for the long period that working performance of concrete is kept on the basis of performance in itself, and passes through viscosity
The addition of conditioning agent and the adjustment of air content make gunite concrete have preferable cohesiveness to be more easy to be adhered on tunnel palisades,
The quantity that rebound of shotcrete is fallen is reduced, achieve the purpose that reduce gunite concrete waste and increases concrete durability,
Simultaneously gunite concrete early strength is improved by being suitably added strong ingredient of organic morning.Pass through analysis, it is found that prepared by the present invention
The special water-reducing agent of railway tunnel construction gunite concrete, by certain raw material proportioning, in addition by adding special TW-BM systems
Row polycarboxylic acid slump retaining agent, extends the divergence of concrete, effectively reduces the springback capacity of concrete.By to spraying coagulation
The extraordinary allotment of native water-reducing agent, under the premise of gunite concrete itself setting time is not influenced, keeps gunite concrete to go out machine
Stable working state when later to sprayed construction avoids slow setting component to being mixed into the accelerator of gunite concrete in sprayed construction
Adverse effect caused by performance, it is appropriate to increase gunite concrete cohesiveness, injection springback capacity is reduced, improves gunite concrete early stage
Intensity and endurance quality.
Specific embodiment
The specific embodiment of the present invention is described in further detail, but the invention is not limited in these realities below
Mode is applied, it is claimed to still fall within the claims in the present invention for any improvement or replacement on the present embodiment essence spirit
Range.
Embodiment 1
A kind of special water-reducing agent of railway tunnel construction gunite concrete, the special water-reducing agent is by common poly-carboxylic high-performance
Water-reducing agent mother liquor, TW-BM seriation polycarboxylic acid slump retaining agents mother liquor, viscosity modifier, air entraining agent, early strength agent compounding composition, each group
Point being converted into the proportioning after solid content is：Common high performance water reducing agent of polyocarboxy acid mother liquor 3%；TW-BM seriations polycarboxylic acids guarantor is collapsed
Agent 12%, air entraining agent 0.05%, viscosity modifier 0.5%, early strength agent 0.5%, remaining be water.
The common high performance water reducing agent of polyocarboxy acid mother liquor is lipid high performance water reducing agent of polyocarboxy acid mother liquor.
Special water-reducing agent chlorion folding solid content is less than 0.05% after the compounding.
The TW-BM series polycarboxylic acid slump retaining agent, by following component component：TW-BMA types 40%, TW-BMB types 40%,
TW-BMC types 20% mix.
The TW-BMA types polycarboxylic acid slump retaining agent, including following component, 15% 3500 molecular weight prenol polyoxy second
Alkene ether, 15% 2400 molecular weight methyl allyl polyoxyethylene ethers, 4.7% acrylic acid, 2% hydroxy-ethyl acrylate, 1% propylene
The monomeric substances such as sour hydroxypropyl acrylate, 0% fumaric acid, 0.5% apple anhydride dehydration, 1% methylpropene sodium sulfonate, 0.1% over cure
Sour ammonium initiator, remainder are water.
The TW-BMB types polycarboxylic acid slump retaining agent, including following component, 19% 3500 molecular weight prenol polyoxy second
Alkene ether, 17% 2400 molecular weight methyl allyl polyoxyethylene ethers, 3.5% acrylic acid, 3% hydroxy-ethyl acrylate, 1.7% the third
Monomeric substances, 0.1% such as olefin(e) acid hydroxypropyl acrylate, 0% fumaric acid, 0.5% apple anhydride dehydration, 1.5% methylpropene sodium sulfonate
Ammonium persulfate initiator, remainder are water.
The TW-BMC types polycarboxylic acid slump retaining agent, including following component, 23% 3500 molecular weight prenol polyoxy second
Alkene ether, 18% 2400 molecular weight methyl allyl polyoxyethylene ethers, 1.7% acrylic acid, 3% hydroxy-ethyl acrylate, 2.7% the third
The monomeric substances such as olefin(e) acid hydroxypropyl acrylate, 0% fumaric acid, 0.5% apple anhydride dehydration, 1% methylpropene sodium sulfonate, 0.1% mistake
Ammonium persulfate initiator, remainder are water.
The TW-BMA types polycarboxylic acid slump retaining agent, TW-BMB types polycarboxylic acid slump retaining agent, TW-BMC type polycarboxylic acid slump retaining agents,
According to proportioning under ammonium persulfate initiation, using the non-dropwise addition technique of one-step method, with radical polymerization under the conditions of certain temperature
Conjunction form synthesizes, and first puts into bottom water in reaction kettle, puts into all kinds of monomeric substance heating stirrings to system temperature and reaches 60 DEG C
Ammonium persulfate initiator is put into three times, and each input amount is consistent, is spaced 30 minutes, insulation reaction after ammonium persulfate is launched
3 hours.
The viscosity modifier is technical grade water-soluble poly vinyl acetate redispersable latex powder.
The air entraining agent includes fatty alcohol lauryl sodium sulfate.
The early strength agent is technical grade diethanol amine.
Embodiment 2
A kind of special water-reducing agent of railway tunnel construction gunite concrete, the special water-reducing agent is by common poly-carboxylic high-performance
Water-reducing agent mother liquor, TW-BM seriation polycarboxylic acid slump retaining agents mother liquor, viscosity modifier, air entraining agent, early strength agent compounding composition, each group
Point being converted into the proportioning after solid content is：Common high performance water reducing agent of polyocarboxy acid mother liquor 4%；TW-BM seriations polycarboxylic acids guarantor is collapsed
Agent 10%, air entraining agent 0.1%, viscosity modifier 0.7%, early strength agent 1%, remaining be water.
The common high performance water reducing agent of polyocarboxy acid mother liquor, ethers high performance water reducing agent of polyocarboxy acid mother liquor.
Special water-reducing agent chlorion folding solid content is less than 0.05% after the compounding.
The TW-BM series polycarboxylic acid slump retaining agent, by following component component：TW-BMA types 45%, TW-BMB types 45%,
TW-BMC types 10% mix.
The TW-BMA types polycarboxylic acid slump retaining agent, including following component, 17% 3500 molecular weight prenol polyoxy second
Alkene ether, 16% 2400 molecular weight methyl allyl polyoxyethylene ethers, 4.8% acrylic acid, 2.3% hydroxy-ethyl acrylate, 1.3%
The monomeric substances such as hydroxypropyl acrylate, 0.3% fumaric acid, 0.7% apple anhydride dehydration, 1.5% methylpropene sodium sulfonate,
0.3% ammonium persulfate initiator, remainder are water.
The TW-BMB types polycarboxylic acid slump retaining agent, including following component, 20% 3500 molecular weight prenol polyoxy second
Alkene ether, 18% 2400 molecular weight methyl allyl polyoxyethylene ethers, 3.7% acrylic acid, 3.3% hydroxy-ethyl acrylate, 1.8%
The monomeric substances such as hydroxypropyl acrylate, 0.3% fumaric acid, 0.8% apple anhydride dehydration, 1.7% methylpropene sodium sulfonate,
0.4% ammonium persulfate initiator, remainder are water.
The TW-BMC types polycarboxylic acid slump retaining agent, including following component, 24% 3500 molecular weight prenol polyoxy second
Alkene ether, 19% 2400 molecular weight methyl allyl polyoxyethylene ethers, 2.5% acrylic acid, 3.5% hydroxy-ethyl acrylate, 2.9%
The monomeric substances such as hydroxypropyl acrylate, 0.4%% fumaric acid, 0.7% apple anhydride dehydration, 2.4% methylpropene sodium sulfonate,
0.3% ammonium persulfate initiator, remainder are water.
The TW-BMA types polycarboxylic acid slump retaining agent, TW-BMB types polycarboxylic acid slump retaining agent, TW-BMC type polycarboxylic acid slump retaining agents,
According to proportioning under ammonium persulfate initiation, using the non-dropwise addition technique of one-step method, with radical polymerization under the conditions of certain temperature
Conjunction form synthesizes, and first puts into low water in reaction kettle, puts into all kinds of monomeric substance heating stirrings to system temperature and reaches 60 DEG C
Ammonium persulfate initiator is put into three times, and each input amount is consistent, is spaced 30 minutes, insulation reaction after ammonium persulfate is launched
3 hours.
The viscosity modifier is 200,000 molecular weight hydroxypropyl methyl cellulose technical grade products.
The air entraining agent includes three-iron saponin(e cocoyl amber sulfonate class.
The early strength agent is triethanolamine.
Embodiment 3
A kind of special water-reducing agent of railway tunnel construction gunite concrete, the special water-reducing agent is by common poly-carboxylic high-performance
Water-reducing agent mother liquor, TW-BM seriation polycarboxylic acid slump retaining agents mother liquor, viscosity modifier, air entraining agent, early strength agent compounding composition, each group
Point being converted into the proportioning after solid content is：Common high performance water reducing agent of polyocarboxy acid mother liquor 8%；TW-BM seriations polycarboxylic acids guarantor is collapsed
Agent 15%, air entraining agent 0.3%, viscosity modifier 1%, early strength agent 2%, remaining be water.
The common high performance water reducing agent of polyocarboxy acid mother liquor, it is female including lipid or ethers high performance water reducing agent of polyocarboxy acid
Liquid.
Special water-reducing agent chlorion folding solid content is less than 0.05% after the compounding.
The TW-BM series polycarboxylic acid slump retaining agent, by following component component：TW-BMA types 50%, TW-BMB types 50%,
TW-BMC types 0% mix.
The TW-BMA types polycarboxylic acid slump retaining agent, including following component, 18% 3500 molecular weight prenol polyoxy second
Alkene ether, 17% 2400 molecular weight methyl allyl polyoxyethylene ethers, 5% acrylic acid, 2.5% hydroxy-ethyl acrylate, 1.7% the third
The monomeric substances such as olefin(e) acid hydroxypropyl acrylate, 0.5% fumaric acid, 1% apple anhydride dehydration, 2% methylpropene sodium sulfonate, 0.5% mistake
Ammonium persulfate initiator, remainder are water.
The TW-BMB types polycarboxylic acid slump retaining agent, including following component, 22% 3500 molecular weight prenol polyoxy second
Alkene ether, 20% 2400 molecular weight methyl allyl polyoxyethylene ethers, 4% acrylic acid, 3.5% hydroxy-ethyl acrylate, 2% propylene
The monomeric substances such as sour hydroxypropyl acrylate, 0.5% fumaric acid, 1% apple anhydride dehydration, 2.0% methylpropene sodium sulfonate, 0.5% mistake
Ammonium persulfate initiator, remainder are water.
The TW-BMC types polycarboxylic acid slump retaining agent, including following component, 25% 3500 molecular weight prenol polyoxy second
Alkene ether, 20% 2400 molecular weight methyl allyl polyoxyethylene ethers, 3% acrylic acid, 4% hydroxy-ethyl acrylate, 3% acrylic acid
The monomeric substances such as hydroxypropyl acrylate, 0.5% fumaric acid, 1% apple anhydride dehydration, 3% methylpropene sodium sulfonate, 0.5% persulfuric acid
Ammonium initiator, remainder are water.
The TW-BMA types polycarboxylic acid slump retaining agent, TW-BMB types polycarboxylic acid slump retaining agent, TW-BMC type polycarboxylic acid slump retaining agents,
According to proportioning under ammonium persulfate initiation, using the non-dropwise addition technique of one-step method, with radical polymerization under the conditions of certain temperature
Conjunction form synthesizes, and first puts into low water in reaction kettle, puts into all kinds of monomeric substance heating stirrings to system temperature and reaches 60 DEG C
Ammonium persulfate initiator is put into three times, and each input amount is consistent, is spaced 30 minutes, insulation reaction after ammonium persulfate is launched
3 hours.
The viscosity modifier is technical grade water-soluble poly vinyl acetate redispersable latex powder.
The air entraining agent fatty alcohol-ether sodium sulfate class.
The early strength agent is technical grade triisopropanolamine.
Embodiment 4
Difference lies in polycarboxylic acid slump retaining agent used in embodiment 4 exists embodiment 4 for market sale with embodiment 3
It is initial in the experiment of reference water cement paste that just there is the slump retaining agent that dispersion effect release time to peak is 30 minutes, use this slump retaining agent
Equivalent replaces TW-BM series slump retaining agents, and other formula compositions are same as Example 3.
Embodiment 5
Difference lies in polycarboxylic acid slump retaining agent used in embodiment 5 exists embodiment 5 for market sale with embodiment 3
The slump retaining agent that release time to peak is 90 minutes in the experiment of reference water cement paste replaces TW-BM series using this slump retaining agent equivalent
Slump retaining agent, other formula compositions are same as Example 3.
Embodiment 6
Difference lies in polycarboxylic acid slump retaining agent used in embodiment 6 exists embodiment 6 for market sale with embodiment 3
The slump retaining agent that release time to peak is 120 minutes in the experiment of reference water cement paste replaces TW-BM series using this slump retaining agent equivalent
Slump retaining agent, other formula compositions are same as Example 3.
Embodiment 7
Embodiment 7 by TW-BMA types, TW-BMB types, TW-BMC types polycarboxylic acid slump retaining agent be all changed to market sale in base
Release time to peak is respectively in 60 minutes, 90 minutes, the material of 120 minutes in the experiment of quasi- cement paste, without using viscosity-adjusting agent
Agent and the other formula compositions of early strength agent are same as Example 3.
Embodiment 8
Embodiment 8 and embodiment 3 difference lies in, TW-BMA types polycarboxylic acid slump retaining agent, TW-BMB types polycarboxylic acid slump retaining agent,
TW-BMC types polycarboxylic acid slump retaining agent is prepared using traditional dropwise addition technique, and other formula compositions are same as Example 3.
Embodiment 9
Difference lies in be added without viscosity modifier, other components and addition to embodiment 9 with embodiment 3 in formula composition
It measures same as Example 3.
Embodiment 10
Embodiment 10 and embodiment 3 difference lies in, be added without in formula composition early strength agent, other components and addition with
Embodiment 3 is identical.
Embodiment 11
Embodiment 11 and embodiment 3 difference lies in, be added without viscosity modifier and early strength agent in formula composition, other groups
Divide and addition is same as Example 3.
Experimental example
Water-reducing agent is configured according to the method for embodiment 1-8, refers and synthesizes railway tunnel construction gunite concrete as described in Table 1
In, test the performance of concrete.Simultaneously using application number CN201510318061.7《High-performance water reducing agent》For control group.
Table 1：(arithemetic unit is Kg/m to railway tunnel construction gunite concrete proportioning 1 in table3)
2 gunite concrete performance of table
By analyzing above, it is found that the special water-reducing agent of railway tunnel construction gunite concrete prepared by the present invention passes through one
Fixed raw material proportioning, in addition by adding special TW-BM series polycarboxylic acid slump retaining agents, viscosity modifier with strong component early,
Stablize concrete divergence to be kept for 2 hours or more, effectively improve gunite concrete cohesive strength, reduce the rebound of concrete
Amount, intensity increases within one day, and other kinds of water-reducing agent is fluctuated in gunite concrete using presentation concrete divergence
Greatly or even concrete goes out machine and occurs as soon as the phenomenon that isolation etc. is not used to normal construction, is unfavorable for construction of shotcrete, coagulation
Soil cohesion is smaller, and injection springback capacity is big, and intensity is relatively low within one day.
Claims (10)
1. a kind of special water-reducing agent of railway tunnel construction gunite concrete, which is characterized in that the special water-reducing agent is by commonly gathering
Carboxylic acid high-performance water reducing agent mother liquor, TW-BM seriation polycarboxylic acid slump retaining agents mother liquor, viscosity modifier, air entraining agent, early strength agent compounding
Composition, each component are converted into the proportioning after solid content and are：Common high performance water reducing agent of polyocarboxy acid mother liquor 3%-8%；TW-BM series
Change polycarboxylic acid slump retaining agent 6%-15%, air entraining agent 0.05%-0.3%, viscosity modifier 0.5%-1%, early strength agent 0.5%-
2%th, remaining is water.
2. the special water-reducing agent of railway tunnel construction gunite concrete as described in claim 1, which is characterized in that described is common
High performance water reducing agent of polyocarboxy acid mother liquor, including lipid or ethers high performance water reducing agent of polyocarboxy acid mother liquor.
3. the special water-reducing agent of railway tunnel construction gunite concrete as described in claim 1, which is characterized in that the TW-BM
Serial polycarboxylic acid slump retaining agent, by following component component：TW-BMA type 40-50%, TW-BMB type 40-50%, TW-BMC types 0-
20% mixes.
4. the special water-reducing agent of railway tunnel construction gunite concrete as claimed in claim 3, which is characterized in that the TW-BMA
Type polycarboxylic acid slump retaining agent, including following component, the 3500 molecular weight isoamyl alcohol polyoxyethylene ethers of 15%-18%, 15%-17%
2400 molecular weight methyl allyl polyoxyethylene ethers, 4.7%-5% acrylic acid, 2%-2.5% hydroxy-ethyl acrylates, 1%-
1.7% hydroxypropyl acrylate, 0%-0.5% fumaric acids, 0.5%-1% apple anhydride dehydrations, 1%-2% methacrylic sulfonic acids
The monomeric substances such as sodium, 0.1-0.5% ammonium persulfate initiators, remainder are water.
5. the special water-reducing agent of railway tunnel construction gunite concrete as claimed in claim 3, which is characterized in that the TW-BMB
Type polycarboxylic acid slump retaining agent, including following component, the 3500 molecular weight isoamyl alcohol polyoxyethylene ethers of 19%-22%, 17%-20%
2400 molecular weight methyl allyl polyoxyethylene ethers, 3.5%-4% acrylic acid, 3%-3.5% hydroxy-ethyl acrylates, 1.7%-
2% hydroxypropyl acrylate, 0%-0.5% fumaric acids, 0.5%-1% apple anhydride dehydrations, 1.5%-2.0% metering system sulphurs
The monomeric substances such as sour sodium, 0.1-0.5% ammonium persulfate initiators, remainder are water.
6. the special water-reducing agent of railway tunnel construction gunite concrete as claimed in claim 3, which is characterized in that the TW-BMC
Type polycarboxylic acid slump retaining agent, including following component, the 3500 molecular weight isoamyl alcohol polyoxyethylene ethers of 23%-25%, 18%-20%
2400 molecular weight methyl allyl polyoxyethylene ethers, 1.7%-3% acrylic acid, 3%-4% hydroxy-ethyl acrylates, 2.7%-
3% hydroxypropyl acrylate, 0%-0.5% fumaric acids, 0.5%-1% apple anhydride dehydrations, 1%-3% methylpropene sodium sulfonates
Monomeric substances, 0.1-0.5% ammonium persulfate initiators are waited, remainder is water.
7. TW-BM series polycarboxylic acid slump retaining agent as claimed in claim 3, which is characterized in that technique life is added dropwise using one-step method is non-
Production including following preparation process, mixes each ingredient under ammonium persulfate initiation according to proportioning, puts into bottom water react first
It in kettle, puts into the heating stirring of all kinds of monomeric substances and reaches 60 DEG C to system temperature and put into ammonium persulfate initiator in three times, every time
Input amount is consistent, is spaced 30 minutes, insulation reaction 3 hours after ammonium persulfate is launched.
8. the special water-reducing agent of railway tunnel construction gunite concrete as described in claim 1, which is characterized in that the viscosity tune
Section agent is technical grade water-soluble poly vinyl acetate redispersable latex powder, 200,000 molecular weight hydroxypropyl methyl cellulose technical grades produce
Any one of product.
9. the special water-reducing agent of railway tunnel construction gunite concrete as described in claim 1, which is characterized in that the air entraining agent
Including any in fatty alcohol lauryl sodium sulfate, three-iron saponin(e cocoyl amber sulfonate class or fatty alcohol-ether sodium sulfate class
Kind.
10. the special water-reducing agent of railway tunnel construction gunite concrete as described in claim 1, which is characterized in that the morning is strong
Agent is any one of technical grade diethanol amine, triethanolamine, triisopropanolamine.
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| CN109942239A (en) * | 2019-04-23 | 2019-06-28 | 山西弘新凯建材有限责任公司 | Extraordinary gunite concrete and preparation method thereof |
| CN110395933A (en) * | 2019-07-16 | 2019-11-01 | 江苏博思通新材料有限公司 | A kind of modified water-reducing agent of concrete |
| CN110436818A (en) * | 2019-07-16 | 2019-11-12 | 江苏博思通新材料有限公司 | A kind of tunnel concrete water-reducing agent |
| CN111943561A (en) * | 2020-08-19 | 2020-11-17 | 嘉善华豪建材有限公司 | Polycarboxylic acid high-performance pumping agent and production process thereof |
| CN114105516A (en) * | 2021-11-17 | 2022-03-01 | 贵州天威建材科技有限责任公司 | Sprayed concrete viscosity modifier and preparation method thereof |
| CN115745455A (en) * | 2022-10-21 | 2023-03-07 | 贵州天威建材科技有限责任公司 | Water reducing agent for sprayed concrete, preparation method and application |
| CN117923828A (en) * | 2023-12-05 | 2024-04-26 | 北京市建筑工程研究院有限责任公司 | Composite type bullet reducing agent, preparation method thereof and sprayed concrete |
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| CN109231878A (en) * | 2018-10-23 | 2019-01-18 | 含山县领创新材料科技有限公司 | A kind of cement water reducing agent inhibiting bleeding |
| CN109678384A (en) * | 2019-01-23 | 2019-04-26 | 济南大学 | A kind of dedicated early-strength admixture of prefabricated components concrete |
| CN109942239A (en) * | 2019-04-23 | 2019-06-28 | 山西弘新凯建材有限责任公司 | Extraordinary gunite concrete and preparation method thereof |
| CN109942239B (en) * | 2019-04-23 | 2021-09-03 | 山西弘新凯建材有限责任公司 | Special shotcrete and preparation method thereof |
| CN110395933A (en) * | 2019-07-16 | 2019-11-01 | 江苏博思通新材料有限公司 | A kind of modified water-reducing agent of concrete |
| CN110436818A (en) * | 2019-07-16 | 2019-11-12 | 江苏博思通新材料有限公司 | A kind of tunnel concrete water-reducing agent |
| CN111943561A (en) * | 2020-08-19 | 2020-11-17 | 嘉善华豪建材有限公司 | Polycarboxylic acid high-performance pumping agent and production process thereof |
| CN114105516A (en) * | 2021-11-17 | 2022-03-01 | 贵州天威建材科技有限责任公司 | Sprayed concrete viscosity modifier and preparation method thereof |
| CN115745455A (en) * | 2022-10-21 | 2023-03-07 | 贵州天威建材科技有限责任公司 | Water reducing agent for sprayed concrete, preparation method and application |
| CN117923828A (en) * | 2023-12-05 | 2024-04-26 | 北京市建筑工程研究院有限责任公司 | Composite type bullet reducing agent, preparation method thereof and sprayed concrete |
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