CN107814532A - A kind of polymer-modified cement mortar and its preparation technology - Google Patents
A kind of polymer-modified cement mortar and its preparation technology Download PDFInfo
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- CN107814532A CN107814532A CN201711098447.7A CN201711098447A CN107814532A CN 107814532 A CN107814532 A CN 107814532A CN 201711098447 A CN201711098447 A CN 201711098447A CN 107814532 A CN107814532 A CN 107814532A
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- 239000011083 cement mortar Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000005516 engineering process Methods 0.000 title claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229920000642 polymer Polymers 0.000 claims abstract description 25
- 239000002002 slurry Substances 0.000 claims abstract description 25
- 239000000839 emulsion Substances 0.000 claims abstract description 24
- 239000004576 sand Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000010881 fly ash Substances 0.000 claims abstract description 12
- 239000011398 Portland cement Substances 0.000 claims abstract description 11
- 229920003086 cellulose ether Polymers 0.000 claims abstract description 11
- 239000013530 defoamer Substances 0.000 claims abstract description 11
- 230000008961 swelling Effects 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 25
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 15
- 239000001110 calcium chloride Substances 0.000 claims description 15
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 15
- 239000005909 Kieselgur Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 3
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims 1
- 239000001913 cellulose Substances 0.000 claims 1
- 235000010980 cellulose Nutrition 0.000 claims 1
- 230000003111 delayed effect Effects 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 239000004570 mortar (masonry) Substances 0.000 abstract description 22
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 4
- 229920001410 Microfiber Polymers 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 3
- 239000003658 microfiber Substances 0.000 abstract description 3
- 229920006254 polymer film Polymers 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 229960000583 acetic acid Drugs 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 4
- 229940043237 diethanolamine Drugs 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 239000012362 glacial acetic acid Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 239000002956 ash Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229920000609 methyl cellulose Polymers 0.000 description 2
- 239000001923 methylcellulose Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000002742 anti-folding effect Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000011433 polymer cement mortar Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000052 vinegar Substances 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
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of polymer-modified cement mortar and its preparation technology, modified mortar includes each component of following mass fraction:20 40 parts of portland cement, 45 60 parts of river sand, 0.7 1.3 parts of alkaline diatomite, 39 parts of polymer emulsion, 5 15 parts of flyash, 0.5 1.6 parts of cellulose ether, 6 10 parts of water, 0.21 0.34 parts of defoamer, 0.1 0.17 parts of water reducer, 0.1 0.3 parts of swelling agent, while mortar is prepared by being stirred.Polymer emulsion is added with the mortar of the present invention, with the progress of hydrated cementitious, polymer starts drying and dehydrating, assemble film forming, develop into sticky and successional microfibre film, calcium carbonate tack coat is formed around aggregate and thin polymer film integument, the film layer are filled in the space in hardened paste or mutually handed over slurry.Form flexible web frame, web frame is crossed-over, and is improved the structure inside mortar, is enhanced the deformability of mortar, formed it is hard and soft both with network structure, so as to improve the toughness of cement mortar.
Description
Technical field
The invention belongs to mortar preparation field, is related to a kind of polymer-modified cement mortar and its preparation technology.
Background technology
Polymer cement mortar main species have neoprene amine breast, polyacrylate dispersion, ethene-vinegar on domestic market
Acid, ethylene copolymer, polyurethane, epoxy emulsion etc..Wherein birdsed of the same feather flock together with water-base epoxy the mechanical property of compound cement mortar and putty
The integrated performance indexs such as energy, chemical stability, dimensional stability are especially prominent, have been used for reinforcing and the benefit of building at present
By force.But traditional waterborne epoxy modified cement mortar construction environment temperature conditionss are harsh；Extemporaneous preparation process is numerous and diverse, work effect
Rate is low, and quality is difficult to ensure that.
Due to Presence of an interface area between the cement mortar and sand in concrete or mortar, by curved or tension load situation
Under, material is in fragility destructible, and under acid and alkalescence condition due to mortar in main component be silica sand simultaneously
Contain calcium carbonate in slurry, it is relatively low for alkalescence and acid tolerance, easily cause the corrosion of screed.
The content of the invention
It is an object of the invention to provide a kind of polymer-modified cement mortar and its preparation technology, contain alkali in the mortar
Property diatomite, alkaline calcium hydroxide in diatomite can under sour environment in and acid, while the polymer emulsion in mortar
With the progress of hydrated cementitious, polymer starts drying and dehydrating, assembles film forming, develops into sticky and successional microfibre
Film, form calcium carbonate tack coat around aggregate and thin polymer film integument, the film layer are filled in hardened paste
Mutually handed in space or with slurry.Flexible web frame is formed, web frame is crossed-over, and improves the knot inside mortar
Structure, the deformability for enhancing mortar, formed it is hard and soft both with network structure, so as to improve the toughness of cement mortar.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of polymer-modified cement mortar, include each component of following mass fraction:
Portland cement 20-40 parts, river sand 45-60 parts, alkaline diatomite 0.7-1.3 parts, polymer emulsion 3-9 parts, powder
Coal ash 5-15 parts, cellulose ether 0.5-1.6 parts, water 6-10 parts, defoamer 0.21-0.34 parts, water reducer 0.1-0.17 parts, expansion
Agent 0.1-0.3 parts.
Further, the modulus of fineness of the river sand is 2.5-3.1.
Further, the cellulose ether includes one in methylcellulose, hydroxyethyl cellulose and carboxymethyl cellulose
Kind is a variety of.
Further, the diatomaceous preparation method of alkalescence is：(1) by Muffle of the natural diatomaceous earth at 300-400 DEG C
Kiln roasting 2-3h, then the diatomite after roasting is added to the water to the tripolite solution for being configured to that mass fraction is 12%；
(2) a certain amount of calcium chloride is added in the tripolite solution prepared to step 1, after being dispersed with stirring uniformly, to solution
In the sodium hydroxide solution that weight fraction is 5% is slowly added dropwise, stir when being added dropwise, be added dropwise it is complete after be stirred for 5-10min mistakes
It is filtered dry dry, obtains alkaline diatomite；
Further, 2-6mmol calcium chloride, while calcium chloride and hydrogen are added in the step 2 in every gram of tripolite solution
The ratio between amount of material of sodium oxide molybdena is 1:1.2-1.5；
Further, the preparation method of the polymer emulsion is：Epoxy resin and solvent third are added in reaction vessel
Glycol methyl ether, 20-30min is dissolved at 60 DEG C, then heats to 80 DEG C, be slowly added dropwise diethanol amine, after isothermal reaction 2-4h, subtract
Pressure steams solvent, and glacial acetic acid reaction 30min is then added at 60 DEG C, deionized water is added, is dispersed with stirring uniformly, is gathered
Compound emulsion.
Further, the fineness of the flyash is 400-420m2/ kg, loss on ignition 4.5%；
A kind of polymer-modified cement mortar preparation technology, is comprised the following steps that：
(1) raw material is weighed according to comparison each component, then polymer emulsion, cellulose ether, water are in agitated kettle
In be stirred 5-10min, obtain slurry material；
(2) and then portland cement, river sand, alkaline diatomite, flyash are added in agitated kettle and is stirred 1-5min
Afterwards, add water reducer and swelling agent mixes 5-10min and obtains slurry material；
(3) slurry material prepared by step 1 is slowly added in the slurry material of step 2, adds while stirring, be stirred 5-
Defoamer stirring 20-30min is added after 10min and obtains modified cement mortar.
Beneficial effects of the present invention：
It is added with alkaline diatomite in the present invention, the main component in diatomite is silica, can not only improve sand
The intensity of slurry simultaneously the alkaline calcium hydroxide in diatomite can under sour environment in and acid so that mortar has good resistance to
Corrosivity.
Polymer emulsion is added with the mortar of the present invention, with the progress of hydrated cementitious, polymer starts drying and dehydrating,
Assemble film forming, develop into sticky and successional microfibre film, calcium carbonate tack coat and polymerization are formed around aggregate
Thing film integument, the film layer are filled in the space in hardened paste or mutually handed over slurry.Form flexible net knot
Structure, web frame are crossed-over, and are improved the structure inside mortar, are enhanced the deformability of mortar, formed it is hard and soft both with
Network structure, so as to improve the toughness of cement mortar.
The present invention is that cellulose ether is added with mortar, can form network structure, and polymer emulsion is filled in netted knot
In structure, while mortar is bonded so that mortar is bonded in network structure, further strengthens the toughness and intensity of mortar.
Embodiment
Embodiment 1：
A kind of polymer-modified cement mortar, include each component of following mass fraction:
20 parts of portland cement, 45 parts of river sand, 0.7 part of alkaline diatomite, 3 parts of polymer emulsion, 5 parts of flyash, fine coal
The fineness of ash is 400-420m2/ kg, loss on ignition 4.5%；0.5 part of methylcellulose, 6 parts of water, 0.21 part of defoamer, diminishing
0.1 part of agent, 0.1 part of swelling agent.
The wherein described diatomaceous preparation method of alkalescence is：(1) by Muffle kiln roasting of the natural diatomaceous earth at 300 DEG C
2h, then the diatomite after roasting is added to the water to the tripolite solution for being configured to that mass fraction is 12%；
(2) a certain amount of calcium chloride is added in the tripolite solution prepared to step 1, after being dispersed with stirring uniformly, to solution
In the sodium hydroxide solution that weight fraction is 5% is slowly added dropwise, stir when being added dropwise, be added dropwise it is complete after be stirred for 5min and cross to be filtered dry
It is dry, alkaline diatomite is obtained, wherein 2mmol calcium chloride is added in every gram of tripolite solution, while calcium chloride and sodium hydroxide
The ratio between amount of material is 1:1.2；
The preparation method of the polymer emulsion is：Epoxy resin and solvent propylene glycol methyl ether are added in reaction vessel,
20min is dissolved at 60 DEG C, then heats to 80 DEG C, is slowly added dropwise diethanol amine, after isothermal reaction 2h, decompression steams solvent, so
Glacial acetic acid reaction 30min is added at 60 DEG C afterwards, deionized water is added, is dispersed with stirring uniformly, obtains polymer emulsion.
A kind of polymer-modified cement mortar preparation technology, is comprised the following steps that：
(1) raw material is weighed according to comparison each component, then polymer emulsion, cellulose ether, water are in agitated kettle
In be stirred 5min, obtain slurry material；
(2) and then by portland cement, river sand, alkaline diatomite, flyash add in agitated kettle after being stirred 1min,
Add water reducer and swelling agent mixes 5min and obtains slurry material；
(3) slurry material prepared by step 1 is slowly added in the slurry material of step 2, adds, be stirred while stirring
Defoamer stirring 20min is added after 5min and obtains modified cement mortar.
Embodiment 2：
A kind of polymer-modified cement mortar, include each component of following mass fraction:
28 parts of portland cement, 54 parts of river sand, 1.1 parts of alkaline diatomite, 6 parts of polymer emulsion, 8 parts of flyash, fine coal
The fineness of ash is 400-420m2/ kg, loss on ignition 4.5%；, 1.3 parts of hydroxyethyl cellulose, 8 parts of water, 0.3 part of defoamer, subtract
0.14 part of aqua, 0.2 part of swelling agent.
The diatomaceous preparation method of alkalescence is：(1) by Muffle kiln roasting 2.5h of the natural diatomaceous earth at 350 DEG C,
Then diatomite after roasting is added to the water to the tripolite solution for being configured to that mass fraction is 12%；
(2) a certain amount of calcium chloride is added in the tripolite solution prepared to step 1, after being dispersed with stirring uniformly, to solution
In the sodium hydroxide solution that weight fraction is 5% is slowly added dropwise, 2-6mmol calcium chloride is added in every gram of tripolite solution, simultaneously
The ratio between amount of material of calcium chloride and sodium hydroxide is 1:1.4；Stir when being added dropwise, be added dropwise it is complete after be stirred for 7min and cross to be filtered dry
It is dry, obtain alkaline diatomite；
The preparation method of the polymer emulsion is：Epoxy resin and solvent propylene glycol methyl ether are added in reaction vessel,
25min is dissolved at 60 DEG C, then heats to 80 DEG C, is slowly added dropwise diethanol amine, after isothermal reaction 3h, decompression steams solvent, so
Glacial acetic acid reaction 30min is added at 60 DEG C afterwards, deionized water is added, is dispersed with stirring uniformly, obtains polymer emulsion.
A kind of polymer-modified cement mortar preparation technology, is comprised the following steps that：
(1) raw material is weighed according to comparison each component, then polymer emulsion, cellulose ether, water are in agitated kettle
In be stirred 7min, obtain slurry material；
(2) and then portland cement, river sand, alkaline diatomite, flyash are added in agitated kettle and is stirred 1-5min
Afterwards, add water reducer and swelling agent mixes 8min and obtains slurry material；
(3) slurry material prepared by step 1 is slowly added in the slurry material of step 2, adds, be stirred while stirring
Defoamer stirring 15min is added after 9min and obtains modified cement mortar.
Embodiment 3：
A kind of polymer-modified cement mortar, include each component of following mass fraction:
40 parts of portland cement, 60 parts of river sand, 1.3 parts of alkaline diatomite, 9 parts of polymer emulsion, 15 parts of flyash, fine coal
The fineness of ash is 400-420m2/ kg, loss on ignition 4.5%, 1.6 parts of carboxymethyl cellulose, 10 parts of water, 0.34 part of defoamer, subtract
0.17 part of aqua, 0.3 part of swelling agent.
The diatomaceous preparation method of alkalescence is：(1) by Muffle kiln roasting 3h of the natural diatomaceous earth at 400 DEG C, so
Diatomite after roasting is added to the water to the tripolite solution for being configured to that mass fraction is 12% afterwards；
(2) a certain amount of calcium chloride is added in the tripolite solution prepared to step 1, after being dispersed with stirring uniformly, to solution
In be slowly added dropwise weight fraction be 5% sodium hydroxide solution, while be added dropwise while stir, add 6mmol in every gram of tripolite solution
Calcium chloride, while the ratio between amount of material of calcium chloride and sodium hydroxide is 1:1.5, it is stirred for 10min and crosses to be filtered dry after being added dropwise completely
It is dry, obtain alkaline diatomite；
The preparation method of the polymer emulsion is：Epoxy resin and solvent propylene glycol methyl ether are added in reaction vessel,
30min is dissolved at 60 DEG C, then heats to 80 DEG C, is slowly added dropwise diethanol amine, after isothermal reaction 4h, decompression steams solvent, so
Glacial acetic acid reaction 30min is added at 60 DEG C afterwards, deionized water is added, is dispersed with stirring uniformly, obtains polymer emulsion.
A kind of polymer-modified cement mortar preparation technology, is comprised the following steps that：
(1) raw material is weighed according to comparison each component, then polymer emulsion, cellulose ether, water are in agitated kettle
In be stirred 10min, obtain slurry material；
(2) and then by portland cement, river sand, alkaline diatomite, flyash add in agitated kettle after being stirred 5min,
Add water reducer and swelling agent mixes 10min and obtains slurry material；
(3) slurry material prepared by step 1 is slowly added in the slurry material of step 2, adds, be stirred while stirring
Defoamer stirring 30min is added after 10min and obtains modified cement mortar.
After mortar shaping prepared by embodiment 1-3, then surface was done using wet foster 7 days supports alternately maintenance in 21 days, rests
Shield 28 days test specimen carry out it is anticorrosive experiment and anti-folding and anti-pressing experiment, wherein anticorrosive style be by test specimen respectively 5% salt
Soaked 20 days in acid solution and the sodium chloride solution of saturation 20%, the front and rear fold resistance of measure immersion and crushing resistance, as a result such as table 1
It is shown；
The performance measurement result of the modified cement mortar of table 1：
After being soaked 20 days in 5% hydrochloric acid solution and 20% sodium chloride solution as can be seen from Table 1, the quality of test specimen
Do not lose neither, and the rupture strength of test specimen and compression strength change are little, it can thus be appreciated that modified mortar is with higher
Antiseptic power and higher intensity.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All details are described, it is only described embodiment also not limit the invention.Obviously, according to the content of this specification,
It can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and its four corner and equivalent.
Claims (6)
1. a kind of polymer-modified cement mortar, it is characterised in that include each component of following mass fraction:
Portland cement 20-40 parts, river sand 45-60 parts, alkaline diatomite 0.7-1.3 parts, polymer emulsion 3-9 parts, flyash
5-15 parts, cellulose ether 0.5-1.6 parts, water 6-10 parts, defoamer 0.21-0.34 parts, water reducer 0.1-0.17 parts, swelling agent
0.1-0.3 parts.
A kind of 2. polymer-modified cement mortar according to claim 1, it is characterised in that the diatomaceous system of alkalescence
Preparation Method is：(1) then natural diatomaceous earth is added the diatomite after roasting at 300-400 DEG C of Muffle kiln roasting 2-3h
Enter to be configured to the tripolite solution that mass fraction is 12% in water；
(2) a certain amount of calcium chloride is added in the tripolite solution prepared to step 1, after being dispersed with stirring uniformly, delayed into solution
It is slow that the sodium hydroxide solution that weight fraction is 5% is added dropwise, stir when being added dropwise, be added dropwise it is complete after be stirred for 5-10min and cross to be filtered dry
It is dry, obtain alkaline diatomite.
A kind of 3. polymer-modified cement mortar according to claim 2, it is characterised in that every gram of silicon in the step 2
2-6mmol calcium chloride is added in diatomaceous earth solution, while the ratio between amount of material of calcium chloride and sodium hydroxide is 1:1.2-1.5.
4. a kind of polymer-modified cement mortar according to claim 1, it is characterised in that the fineness of the flyash is
400-420m2/ kg, loss on ignition 4.5%.
5. a kind of polymer-modified cement mortar according to claim 1, it is characterised in that the cellulose ether includes first
One or more in base cellulose, hydroxyethyl cellulose and carboxymethyl cellulose.
6. the polymer-modified cement mortar preparation technology described in a kind of claim 1, it is characterised in that comprise the following steps that：
(1) raw material is weighed according to comparison each component, then polymer emulsion, cellulose ether, water stir in agitated kettle
Mixing 5-10min is mixed, obtains slurry material；
(2) and then by portland cement, river sand, alkaline diatomite, flyash add in agitated kettle after being stirred 1-5min, add
Enter water reducer and swelling agent mixes 5-10min and obtains slurry material；
(3) slurry material prepared by step 1 is slowly added in the slurry material of step 2, adds while stirring, be stirred 5-
Defoamer stirring 20-30min is added after 10min and obtains modified cement mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711098447.7A CN107814532A (en) | 2017-11-09 | 2017-11-09 | A kind of polymer-modified cement mortar and its preparation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711098447.7A CN107814532A (en) | 2017-11-09 | 2017-11-09 | A kind of polymer-modified cement mortar and its preparation technology |
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| CN109231936A (en) * | 2018-10-18 | 2019-01-18 | 中国铁道科学研究院集团有限公司金属及化学研究所 | A kind of Self-leveling waterproof mortar and its preparation method and application |
| CN110054446A (en) * | 2019-05-07 | 2019-07-26 | 福建省昊立建设工程有限公司 | A kind of cement mortar and preparation process thereof |
| CN114455916A (en) * | 2022-02-25 | 2022-05-10 | 三棵树涂料股份有限公司 | Mortar for polymer cement waterproof villa and preparation method thereof |
| CN115288473A (en) * | 2022-08-16 | 2022-11-04 | 陕西迪卡特建筑工程有限公司 | Brick column polymer mortar and steel-clad reinforcement method |
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| CN115288473A (en) * | 2022-08-16 | 2022-11-04 | 陕西迪卡特建筑工程有限公司 | Brick column polymer mortar and steel-clad reinforcement method |
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Application publication date: 20180320 |