CN1080625A - Coal ash powder full mineral slag concrete - Google Patents
Coal ash powder full mineral slag concrete Download PDFInfo
- Publication number
- CN1080625A CN1080625A CN92104810A CN92104810A CN1080625A CN 1080625 A CN1080625 A CN 1080625A CN 92104810 A CN92104810 A CN 92104810A CN 92104810 A CN92104810 A CN 92104810A CN 1080625 A CN1080625 A CN 1080625A
- Authority
- CN
- China
- Prior art keywords
- concrete
- slag
- sand
- flyash
- coal ash
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002893 slag Substances 0.000 title claims abstract description 51
- 229910052500 inorganic mineral Inorganic materials 0.000 title abstract description 17
- 239000011707 mineral Substances 0.000 title abstract description 17
- 239000010883 coal ash Substances 0.000 title abstract description 15
- 239000000843 powder Substances 0.000 title abstract description 15
- 239000010881 fly ash Substances 0.000 claims abstract description 22
- 239000004568 cement Substances 0.000 claims abstract description 20
- 239000002440 industrial waste Substances 0.000 claims abstract description 4
- 239000004576 sand Substances 0.000 claims description 23
- 239000004575 stone Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 230000004520 agglutination Effects 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 2
- 239000012634 fragment Substances 0.000 claims 1
- 238000005086 pumping Methods 0.000 abstract description 6
- 230000036571 hydration Effects 0.000 abstract description 4
- 238000006703 hydration reaction Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract 1
- 208000032843 Hemorrhage Diseases 0.000 description 7
- 208000034158 bleeding Diseases 0.000 description 7
- 231100000319 bleeding Toxicity 0.000 description 7
- 230000000740 bleeding effect Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002742 anti-folding effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 102220207965 rs778468876 Human genes 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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
Coal ash powder full mineral slag concrete is except that cement, all utilizes industrial waste (slag, flyash) formulated.Solved and utilized the multi-angular slag particle in broken back to do the difficult problem that flowability is poor, workability is poor, difficulty is operated that the concrete coarse-fine aggregate brings, reached the concrete pumping requirement.This concrete workability is good, and Qinshui, hydration heat are not low, the later strength height, and impervious good, resistance toheat is good, and main raw all is industrial waste, and is cheap, is a kind of multifunctional efficient benefit new concrete.
Description
The present invention be a kind of use waste material as concrete filler, particularly make the concrete of filler with flyash and slag.
Along with the development of building, concrete consumption increases rapidly, and forms concrete sand, is becoming tight stone source of goods day, seeks substitute material, reduces cost, has become problem anxious to be solved.
Smelter has blast furnace ironmaking slag (hereinafter to be referred as slag), the flyash discharging of a large amount of slow cooling every year, has taken a large amount of soils, and environmental requirement must be handled.
Many edges and corners after the slag fragmentation, surface irregularity, suction, the concrete workability of preparation is poor, the needs that can not adapt to mechanized construction. before the present invention, also have unit to make slag concrete, (edges and corners are few but its fine aggregate is still used river sand, slick and sly), to improve workability, reach the pumping requirement far away.One meter seven engineering of Wuhan Iron and Steel Plant for example, use be exactly the slag concrete of making fine aggregate with river sand, can not pumping.
Concrete made of slag aggregate of the prior art (notification number CN1034355A, what use application number GK88104528.4) is the steel-making slag, not the said ironmaking slag of the present invention. there is a big difference for both material composition and performances, for example very easily efflorescence expansion of slag, thereby this patented technology can't be used for reference in design full mineral slag concrete proportioning.
Japanese Patent slag cement extrusion molding manufacture method (patent No. is J02239140), slag in this patent is that the scum of hot melt shape is handled the slag that forms the sand shape through chilling (generally mostly being shrend), this slag glass body burden height, active high, allocate in the cement after levigate and use, generally be commonly called as grain slag. the material that uses in this patent, except that slag cement, also have additive, filamentary material, synthetic resins, whipping agent, do not use above-mentioned slow cooling blast furnace ironmaking slag.
It is low to the purpose of this invention is to provide a kind of cost, all uses the pumpable concrete of slag as coarse-fine aggregate, replaces sand-stone concrete.
For achieving the above object, the present invention is with the dander (5-30mm) of slag behind crushing and screening, slag sand (0-5mm) replaces stone and the sand in the normal concrete, use flyash, cement, admixture, the coal ash powder full mineral slag concrete that water is formulated. thereby every many edges and corners, coarse stone matter, the ceramic-like concrete material, all available the inventive method replaces stone and the sand in the normal concrete, make good fluidity, workable concrete. as crushed stone, bits, the broken pebble piece, bits, broken haydite, haydite sand, expanded slag piece and sand. behind the crushing and screening building stones of stone quarry, the screen underflow aggregate chips abandons as waste material always, adopt the inventive method, promptly can be used as fine aggregate and make good fluidity, workability is good, pumpable concrete.
The proportioning design of coal ash powder full mineral slag concrete of the present invention, though take over the design theory of normal concrete, but the porous, surface irregularity, voidage of considering slag sand and dander be big, characteristics such as trace active are arranged, the regulation and the market practice of the countries concerned's rules (seeing the back for details) have been broken through, carry out repeatedly proportioning design and debugging, reach concrete design strength grade, had good flowability, workability, realized pumping.
In the proportioning design, water cement ratio is very important. and it is related to concrete intensity, flowability and workability, and therefore, the present invention has at first selected Different Water-Cement Ratio to test, and finds to increase with water cement ratio, and concrete strength reduces.
Dander, slag sand distinguishing feature are that density is less, hole is many, surface irregularity, cause concrete flowability poor, workability is poor. in order to improve concrete flowability and workability, need carry out the selection of best sand coarse aggregate ratio. test learns that the best sand coarse aggregate ratio of plastic concrete is 34-42%, and the best sand coarse aggregate ratio of pump concrete is 38-45%.
Because the raising of sand coarse aggregate ratio needs suitable agglutination material parcel dander, slag sand, for saving cement, has selected fly ash in electric power plant.
Doping quantity of fly ash directly influences concrete intensity, flowability and workability. cement consumption is constant, the flyash consumption is few, the early strength height, but it is mobile poor, workability is poor, bleeding. this has proved that flyash is the concrete solid liquid agent of this kind. therefore, should not be subjected to that " flyash is at concrete, mortar engineering application procedures " (JGJ28-86) restriction of " doping quantity of fly ash is no more than 2 times of cement consumption 10-15% " of regulation. actual flyash consumption is the 30-240 kilogram, the 20-70%. that accounts for the agglutination material total amount is in order to adjust flowability and workability better, also use calcium lignin sulphonate as admixture, because the concrete water bleeding performance is the concrete flowability of influence directly. of the present invention facts have proved: coal ash powder full mineral slag concrete and common crushed stone concrete are at cement consumption, under the essentially identical situation of water cement ratio and sand coarse aggregate ratio, coal ash powder full mineral slag concrete lacks 1% than the crushed stone concrete bleeding, than having added 40 kilograms of cement, the few 0.21%. slump-loss of the full mineral slag concrete bleeding of fly ash is not less than crushed stone concrete yet. and coal ash powder full mineral slag concrete is quiet to stop 20 minutes, and the slump is loss not.Stopped 20 minutes and crushed stone concrete is quiet, 7.9%. is quiet stopped 40 minutes in loss, coal ash powder full mineral slag concrete slump-loss 22.9%, crushed stone concrete loss 36.8%. coal ash powder full mineral slag concrete lacks than crushed stone concrete that to lose 14%. bleedings few, the characteristic that slump-loss is few, guaranteed the flowability that concrete is good, and have good cohesiveness and a certain flow ability (workability is good), make concrete have good pumpability. illustrate that coal ash powder full mineral slag concrete is to rely on the effect of microballon in the flyash and improved concrete flowability, cohesiveness and flow ability, wearing and tearing have been reduced to the pump truck tube wall, guaranteed concrete pumpability. put into practice pumping and show, concrete goes out a jar slump 15.5-21cm, tank car amount of concrete 6m
3, pump pressure 12-14MPa, pump was intact in 11-13 minute, met the normal pumping requirement of normal concrete, met the mechanized construction processing requirement.
Little (the 1160-1180gk/m of slag density
3), the crush index height (15-18%), according to standard YBJ205-84 regulation, can only be used in the following concrete of C20 level. owing to the Ca(OH that separates out in flyash in this concrete and the hydrated cementitious)
2Carry out secondary hydration, form new hydraulicity agglutination material and fill the slag hole, improve the cohesive strength of cement stone and nugget. and dander has been inhaled water before concrete stirs initial set, bleeding not when making concrete construction, when concrete hardening, water in the hole can supply the secondary hydration water again, formation is from maintenance, thereby make the late strength of concrete height. also because the particulate effect of flyash, filled the cavity in the concrete, duct and microgap have improved concrete degree of compactness, thereby have improved intensity, remedied the low shortcoming of the ultimate compression strength of dander own. can make C40 level concrete. therefore, flyash is again to optimize agent.
By test and preferred, determined C7.5 to C40 level concrete mix. with the C40 level is example: cement adopts Zhengzhou silicate 525#.
Cement: 480kg/m
3Flyash 40kg/m
3
Slag sand: 545kg/m
3
Dander 850kg/m
3
Calcium lignin sulphonate: 1.85kg/m
3
Water cement ratio: 0.375 sand coarse aggregate ratio: 39.1%
R7=36.4MPa R28=46.0MPa
Facts have proved that the density of coal ash powder full mineral slag concrete is than the light 250-290kg/m of common crushed stone concrete
3, but anti-folding, axial compressive strength, bond stress, impervious index be apparently higher than the crushed stone concrete with strength grade, and integral working is good, and the weather resistance meet the specifications requires (seeing Table 1).
Coal ash powder full mineral slag concrete of the present invention also is suitable for the heat resistance concrete (seeing Table 2) below 500 ℃, is a kind of Multifucntional concrete.
Coal ash powder full mineral slag concrete is because main raw material(s) (slag, flyash) all is an industrial waste, every cubic metre of price is lower more than 30 yuan than crushed stone concrete, economic benefit is good, utilize slag and flyash in a large number, also can alleviate environmental pollution, alleviating the tensity of sandstone. the depleted aggregate chips also can utilize the present invention to make concrete fine aggregate and use, and has found new purposes. and therefore, environmental benefit and social benefit are very significant.
Embodiment:
The hotblast stove basis is a large foundation, and amount of concrete is 4300m
3, strength grade of concrete C20. is more because of the working-yard ground obstacle, and pump truck can't be near the basis, therefore, adopt concrete pump is delivered to main chute, again shunting, 70 meters of total lengths are used the coal ash powder full mineral slag concrete pouring smoothly, because hydration heat is low, do not take any cooling measure, and concrete is bleeding not, the mould that do not rise, smooth surface, easily floating, received techno-economic effect preferably.
Claims (4)
1, a kind of concrete that uses industrial waste as filler, be particularly suitable for doing the concrete of filler with flyash and slag, be made up of cement coarse-fine aggregate, water and admixture, it is characterized in that using dander and slag sand as concrete coarse-fine aggregate, flyash is as optimizing agent.
2, concrete according to claim 1 is characterized in that the concrete coarse-fine aggregate is various stone matter, stupalith, as crushed stone, stone fragment, broken pebble piece and bits, haydite, haydite sand, expanded slag piece and bits etc.
3, concrete according to claim 1 is characterized in that sand coarse aggregate ratio 34-42% in the plastic concrete, and sand coarse aggregate ratio 38-45% in the pump concrete, water cement ratio are 0.35-0.6.
4, concrete according to claim 1 is characterized in that the flyash consumption is the 30-240 kilogram, accounts for the 20-70%. of agglutination material total amount
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92104810A CN1080625A (en) | 1992-06-29 | 1992-06-29 | Coal ash powder full mineral slag concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92104810A CN1080625A (en) | 1992-06-29 | 1992-06-29 | Coal ash powder full mineral slag concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1080625A true CN1080625A (en) | 1994-01-12 |
Family
ID=4941006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92104810A Pending CN1080625A (en) | 1992-06-29 | 1992-06-29 | Coal ash powder full mineral slag concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1080625A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2201410C2 (en) * | 2000-06-26 | 2003-03-27 | Бикбау Марсель Янович | Concrete |
| CN100408499C (en) * | 2005-06-21 | 2008-08-06 | 孙永杰 | Energy-saving environment protecting waste brick |
| CN101712542B (en) * | 2009-12-01 | 2015-04-22 | 陈世忠 | Heat-resistant concrete |
| CN105272072A (en) * | 2015-11-26 | 2016-01-27 | 华北水利水电大学 | Technological preparation method of green and high-performance concrete |
| CN105330239A (en) * | 2015-12-15 | 2016-02-17 | 苏州万盛混凝土有限公司 | Preparing method for heat-resisting modified concrete |
| CN105884297A (en) * | 2016-04-07 | 2016-08-24 | 广西大学 | Novel concrete and preparation method thereof |
| CN106966647A (en) * | 2017-05-17 | 2017-07-21 | 贵州精正检测有限公司 | A kind of concrete containing metallurgical slag and preparation method thereof |
| CN109231901A (en) * | 2018-10-11 | 2019-01-18 | 十九冶成都建设有限公司 | High titanium type blast furnace slag concrete floating slurry recycling method |
| TWI747481B (en) * | 2020-09-08 | 2021-11-21 | 詠弘工程有限公司 | Lightweight concrete and uses thereof |
-
1992
- 1992-06-29 CN CN92104810A patent/CN1080625A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2201410C2 (en) * | 2000-06-26 | 2003-03-27 | Бикбау Марсель Янович | Concrete |
| CN100408499C (en) * | 2005-06-21 | 2008-08-06 | 孙永杰 | Energy-saving environment protecting waste brick |
| CN101712542B (en) * | 2009-12-01 | 2015-04-22 | 陈世忠 | Heat-resistant concrete |
| CN105272072A (en) * | 2015-11-26 | 2016-01-27 | 华北水利水电大学 | Technological preparation method of green and high-performance concrete |
| CN105330239A (en) * | 2015-12-15 | 2016-02-17 | 苏州万盛混凝土有限公司 | Preparing method for heat-resisting modified concrete |
| CN105884297A (en) * | 2016-04-07 | 2016-08-24 | 广西大学 | Novel concrete and preparation method thereof |
| CN106966647A (en) * | 2017-05-17 | 2017-07-21 | 贵州精正检测有限公司 | A kind of concrete containing metallurgical slag and preparation method thereof |
| CN109231901A (en) * | 2018-10-11 | 2019-01-18 | 十九冶成都建设有限公司 | High titanium type blast furnace slag concrete floating slurry recycling method |
| CN109231901B (en) * | 2018-10-11 | 2021-03-19 | 十九冶成都建设有限公司 | High titanium type blast furnace slag concrete floating slurry recycling method |
| TWI747481B (en) * | 2020-09-08 | 2021-11-21 | 詠弘工程有限公司 | Lightweight concrete and uses thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |