CN103588416A - Sulphoaluminate cement concrete pumping agent - Google Patents
Sulphoaluminate cement concrete pumping agent Download PDFInfo
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- CN103588416A CN103588416A CN201310536968.1A CN201310536968A CN103588416A CN 103588416 A CN103588416 A CN 103588416A CN 201310536968 A CN201310536968 A CN 201310536968A CN 103588416 A CN103588416 A CN 103588416A
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Abstract
The invention relates to a sulphoaluminate cement concrete pumping agent which comprises the following components in parts by weight: 10-30 parts of a polycarboxylate high-performance water reducing agent, 20-40 parts of boric acid or borax, 5-10 parts of organic polyhydroxy acid, 5-20 parts of hydroxypropyl methyl cellulose or hydroxyethyl methyl cellulose, 10-20 parts of sugar calcium or calcium lignosulfonate, and 5 to 10 parts of a mineral waste residue or fly ash. The sulphoaluminate cement concrete pumping agent has the characteristics of good performance, high initial slump, small 2-hour slump loss and high early strength and the like; and moreover, the sulphoaluminate cement concrete pumping agent is low in production cost, and is green and environmentally friendly.
Description
Technical field
The present invention relates to a kind of concrete admixture, relate in particular to a kind of aluminosulfate cement concrete pump-feed agent.
Background technology
Aluminosulfate cement (hereinafter to be referred as SAC cement) has the features such as aquation is fast, early strength is high, later stage contraction is little, good endurance, is often used in salvaging.Facts have proved of result of study and engineering application, SAC is the cement type that is worth industry to pay attention to and promote.Soviet Union's curtain is precious waits people's research to show that: SAC has good endurance quality, the cement that station and station, the middle mountain use of later building up are investigated in first Great Wall that China built in the South Pole in nineteen eighty-three is exactly fast hard SAC, this cement has stood the severe cold test of-50 ℃, so far within existing 25 years, also using, this explanation SAC has good anti-freezing property and low-temperature stiffening performance; Ordinary Portland cement concrete whole debacle after 270 freeze-thaw cycle, cannot measure its intensity, and fast hard SAC concrete still keeps 97.0% intensity after 270 freeze-thaw cycle, have no peeling phenomenon, this has fully proved that SAC has good anti-freezing property; The SAC concrete impermeability of 3 days is suitable with the Portland cement concrete (PCC) impermeability of 28 days, and be the SAC high-strength concrete of mixing admixture of 7 days the length of time, is forced into step by step 15kg/cm
2time, the average permeable height of test specimen is only 1cm, this digital proof SAC has good anti-permeability performance.The Concrete Resist Reinforcing Sulfate Corrosion situation of preparing than very fast hard SAC, silicate cement for dam, sulfate resisting Portland cement and four kinds of cement of Portland blast furnace slag cement under the same conditions, corrosion through 3 years, its strength retention ratio is respectively 90%, 27%, 0% and 30%, and these data suffice to show that SAC has the ability of fabulous resisting erosion of sulfate.Cheng Xin, normal impartial people utilize the titanate-containing sulpho-aluminate cement of industrial waste barium slag research, and property indices has had further raising than traditional aluminosulfate cement.
Maintenance engineering is owing to being to construct in road operation process, and close traffic overlong time can be brought the reduction of road operational efficiency, causes certain financial loss.
Fast hardening concrete early strength is high, more than within 1 day, ultimate compression strength can reach 40MPa, and reduction of erection time greatly.If for the larger engineering of the concrete amounts such as deck paving adopt commercialized supply can be larger shorten the time, improve highway maintenance maintenance efficiency.Yet the time of coagulation of quick hardening sulphoaluminate cement is very short, initial set is only about 30 minutes, has greatly limited the convenience of construction.
Patent CN201110186562.6 mentions the object that adopts the segmentation of retardant boric acid to add to reach aluminosulfate cement concrete commercialization transportation, but owing to will adopting artificial interpolation, difficult quality is controlled; Can patent CN200510042509.3 adopts boric acid and molasses as the concrete retardant of aluminosulfate cement, but be not described carrying out pumping construction.
Therefore, need the concrete pumping agent of a kind of aluminosulfate cement badly and solve the problems referred to above.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of well behaved aluminosulfate cement concrete pump-feed agent.
For addressing the above problem, a kind of aluminosulfate cement concrete pump-feed agent of the present invention, it is characterized in that: it is comprised of following weight parts component: 10 ~ 30 parts of high performance water reducing agent of polyocarboxy acid, 20 ~ 40 parts of boric acid or boraxs, 5 ~ 10 parts of organic polyhydroxy acid, 5 ~ 20 parts of Vltra tears or hydroxyethylmethyl-celluloses, 10 ~ 20 parts of sugared calcium or wooden calcium, 5 ~ 10 parts, slag or flyash.
Described organic polyhydroxy acid refers to one or more mixtures that mix in gluconic acid, citric acid or tartrate.
Described Vltra tears or described hydroxyethylmethyl-cellulose refer to the Mierocrystalline cellulose that the soltion viscosity of mass concentration 2% is 2 ~ 5pa.s.
Described sugared calcium or described wooden calcium refer to the waste in sugaring or paper industry processed.
The specific surface area of described slag or described flyash is greater than 400m
2/ kg.
The present invention compared with prior art has the following advantages:
1, the present invention is mainly comprised of poly-carboxylic carboxylic high-performance water reducing agent, poly-hydroxy weak acid, Mierocrystalline cellulose and multiple trade waste, boric acid can wrap up cement granules effectively, and mixing of poly-hydroxy weak acid further wrapped up cement granules by preferential adsorption mechanism, thereby effectively delay aluminosulfate cement aquation, Mierocrystalline cellulose can effectively prevent the local bleeding (referring to table 1) causing due to slow setting.
Table 1: performance index of the present invention
As can be seen from Table 1, the present invention is functional, has that the initial slump is high, 2 hours little loss of slumps and an early strength high.
2, the present invention has adopted various trade wastes, and raw material is easy to get, therefore, and low production cost, and environmental protection.
Embodiment
embodiment 1a concrete pump-feed agent, it is comprised of following weight parts (kg/kg) component: 30 parts of high performance water reducing agent of polyocarboxy acid, 40 parts of boric acid, 10 parts of organic polyhydroxy acid, 5 parts of hydroxyethylmethyl-celluloses, 10 parts of wooden calcium, 10 parts, flyash.
Wherein: organic polyhydroxy acid refers to the mixture that tartrate and citric acid mix with the ratio of 1 kg:1 kg.
Hydroxyethylmethyl-cellulose refers to the Mierocrystalline cellulose that the soltion viscosity of mass concentration 2% is 5pa.s.
Wood calcium refers to the waste in paper industry processed.
The specific surface area of flyash is greater than 400m
2/ kg.
embodiment 2a concrete pump-feed agent, it is comprised of following weight parts (kg/kg) component: 30 parts of high performance water reducing agent of polyocarboxy acid, 20 parts of boric acid, 10 parts of organic polyhydroxy acid, 10 parts of hydroxyethylmethyl-celluloses, 10 parts of wooden calcium, 10 parts, flyash.
Wherein: organic polyhydroxy acid refers to the mixture that tartrate and citric acid mix with the ratio of 1 kg:1 kg.
Hydroxyethylmethyl-cellulose refers to the Mierocrystalline cellulose that the soltion viscosity of mass concentration 2% is 2pa.s.
Wood calcium refers to the waste in paper industry processed.
The specific surface area of flyash is greater than 400m
2/ kg.
embodiment 3a concrete pump-feed agent, it is comprised of following weight parts (kg/kg) component: 25 parts of high performance water reducing agent of polyocarboxy acid, 40 parts of boric acid, 10 parts of organic polyhydroxy acid, 5 parts of hydroxyethylmethyl-celluloses, 15 parts of wooden calcium, 5 parts, flyash.
Wherein: organic polyhydroxy acid refers to the mixture that tartrate and citric acid mix with the ratio of 1 kg:1 kg.
Hydroxyethylmethyl-cellulose refers to the Mierocrystalline cellulose that the soltion viscosity of mass concentration 2% is 5pa.s.
Wood calcium refers to the waste in paper industry processed.
The specific surface area of flyash is greater than 400m
2/ kg.
embodiment 4a concrete pump-feed agent, it is comprised of following weight parts (kg/kg) component: 10 parts of high performance water reducing agent of polyocarboxy acid, 40 parts of boric acid, 10 parts of organic polyhydroxy acid, 10 parts of hydroxyethylmethyl-celluloses, 20 parts of wooden calcium, 10 parts, flyash.
Wherein: organic polyhydroxy acid refers to the mixture that tartrate and citric acid mix with the ratio of 1 kg:2 kg.
Hydroxyethylmethyl-cellulose refers to the Mierocrystalline cellulose that the soltion viscosity of mass concentration 2% is 2pa.s.
Wood calcium refers to the waste in paper industry processed.
The specific surface area of flyash is greater than 400m
2/ kg.
embodiment 5a concrete pump-feed agent, it is comprised of following weight parts (kg/kg) component: 20 parts of high performance water reducing agent of polyocarboxy acid, 35 parts of boric acid, 5 parts of organic polyhydroxy acid, 20 parts of hydroxyethylmethyl-celluloses, 10 parts of wooden calcium, 10 parts, flyash.
Wherein: organic polyhydroxy acid refers to the mixture that tartrate and citric acid mix with the ratio of 1 kg:2 kg.
Hydroxyethylmethyl-cellulose refers to the Mierocrystalline cellulose that the soltion viscosity of mass concentration 2% is 5pa.s.
Wood calcium refers to the waste in paper industry processed.
The specific surface area of flyash is greater than 400m
2/ kg.
embodiment 6a concrete pump-feed agent, it is comprised of following weight parts (kg/kg) component: 10 parts of high performance water reducing agent of polyocarboxy acid, 20 parts of boraxs, 6 parts of organic polyhydroxy acid, 15 parts of Vltra tearss, 12 parts of sugared calcium, 6 parts, slag.
Wherein: organic polyhydroxy acid refers to gluconic acid.
Vltra tears refers to the Mierocrystalline cellulose that the soltion viscosity of mass concentration 2% is 3pa.s.
Sugar calcium refers to the waste in sugar industry.
The specific surface area of slag is greater than 400m
2/ kg.
embodiment 7a concrete pump-feed agent, it is comprised of following weight parts (kg/kg) component: 18 parts of high performance water reducing agent of polyocarboxy acid, 25 parts of boraxs, 7 parts of organic polyhydroxy acid, 8 parts of Vltra tearss, 13 parts of sugared calcium, 7 parts, slag.
Wherein: organic polyhydroxy acid refers to citric acid.
Vltra tears refers to the Mierocrystalline cellulose that the soltion viscosity of mass concentration 2% is 4pa.s.
Sugar calcium refers to the waste in sugar industry.
The specific surface area of slag is greater than 400m
2/ kg.
embodiment 8a concrete pump-feed agent, it is comprised of following weight parts (kg/kg) component: 28 parts of high performance water reducing agent of polyocarboxy acid, 35 parts of boraxs, 8 parts of organic polyhydroxy acid, 12 parts of Vltra tearss, 16 parts of sugared calcium, 8 parts, slag.
Wherein: organic polyhydroxy acid refers to tartrate.
Vltra tears refers to the Mierocrystalline cellulose that the soltion viscosity of mass concentration 2% is 2.5pa.s.
Sugar calcium refers to the waste in sugar industry.
The specific surface area of slag is greater than 400m
2/ kg.
embodiment 9a concrete pump-feed agent, it is comprised of following weight parts (kg/kg) component: 22 parts of high performance water reducing agent of polyocarboxy acid, 24 parts of boraxs, 8 parts of organic polyhydroxy acid, 14 parts of Vltra tearss, 17 parts of sugared calcium, 9 parts, slag.
Wherein: organic polyhydroxy acid refers to the mixture that gluconic acid and citric acid mix with the ratio of 1 kg:1 kg.
Vltra tears refers to the Mierocrystalline cellulose that the soltion viscosity of mass concentration 2% is 2pa.s.
Sugar calcium refers to the waste in sugar industry.
The specific surface area of slag is greater than 400m
2/ kg.
embodiment 10a concrete pump-feed agent, it is comprised of following weight parts (kg/kg) component: 26 parts of high performance water reducing agent of polyocarboxy acid, 28 parts of boraxs, 9 parts of organic polyhydroxy acid, 16 parts of Vltra tearss, 18 parts of sugared calcium, 5 parts, slag.
Wherein: organic polyhydroxy acid refers to the mixture that gluconic acid and tartrate mix with the ratio of 1 kg:2 kg.
Vltra tears refers to the Mierocrystalline cellulose that the soltion viscosity of mass concentration 2% is 3.5pa.s.
Sugar calcium refers to the waste in sugar industry.
The specific surface area of slag is greater than 400m
2/ kg.
embodiment 11a concrete pump-feed agent, it is comprised of following weight parts (kg/kg) component: 16 parts of high performance water reducing agent of polyocarboxy acid, 36 parts of boraxs, 10 parts of organic polyhydroxy acid, 18 parts of Vltra tearss, 19 parts of sugared calcium, 10 parts, slag.
Wherein: organic polyhydroxy acid refers to the mixture that gluconic acid, citric acid, tartrate mix with the ratio of 1 kg:1 kg:1 kg.
Vltra tears refers to the Mierocrystalline cellulose that the soltion viscosity of mass concentration 2% is 4.5pa.s.
Sugar calcium refers to the waste in sugar industry.
The specific surface area of slag is greater than 400m
2/ kg.
Above-mentioned
embodiment 1 ~ 11in use must be with dry mixing such as cement, sandstone more than 30 seconds.
Claims (5)
1. an aluminosulfate cement concrete pump-feed agent, it is characterized in that: it is comprised of following weight parts component: 10 ~ 30 parts of high performance water reducing agent of polyocarboxy acid, 20 ~ 40 parts of boric acid or boraxs, 5 ~ 10 parts of organic polyhydroxy acid, 5 ~ 20 parts of Vltra tears or hydroxyethylmethyl-celluloses, 10 ~ 20 parts of sugar calcium or wooden calcium, 5 ~ 10 parts, slag or flyash.
2. a kind of aluminosulfate cement concrete pump-feed agent as claimed in claim 1, is characterized in that: described organic polyhydroxy acid refers to one or more mixtures that mix in gluconic acid, citric acid or tartrate.
3. a kind of aluminosulfate cement concrete pump-feed agent as claimed in claim 1, is characterized in that: described Vltra tears or described hydroxyethylmethyl-cellulose refer to the Mierocrystalline cellulose that the soltion viscosity of mass concentration 2% is 2 ~ 5pa.s.
4. a kind of aluminosulfate cement concrete pump-feed agent as claimed in claim 1, is characterized in that: described sugared calcium or described wooden calcium refer to the waste in sugaring or paper industry processed.
5. a kind of aluminosulfate cement concrete pump-feed agent as claimed in claim 1, is characterized in that: the specific surface area of described slag or described flyash is greater than 400m
2/ kg.
Priority Applications (1)
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|---|---|---|---|
| CN201310536968.1A CN103588416B (en) | 2013-11-04 | 2013-11-04 | A kind of aluminosulfate cement concrete pump-feed agent |
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|---|---|---|---|
| CN201310536968.1A CN103588416B (en) | 2013-11-04 | 2013-11-04 | A kind of aluminosulfate cement concrete pump-feed agent |
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| CN103588416A true CN103588416A (en) | 2014-02-19 |
| CN103588416B CN103588416B (en) | 2015-09-09 |
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| CN201310536968.1A Active CN103588416B (en) | 2013-11-04 | 2013-11-04 | A kind of aluminosulfate cement concrete pump-feed agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106348642A (en) * | 2016-11-30 | 2017-01-25 | 张松波 | Low-slump-loss concrete pumping agent |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1193616A (en) * | 1997-03-18 | 1998-09-23 | 沈阳建筑工程学院 | Production of composite concrete additives from superfined flyash |
| CN102060463A (en) * | 2010-12-03 | 2011-05-18 | 山东宏艺科技股份有限公司 | Low-cost concrete antifreezing pumping aid and preparation method thereof |
-
2013
- 2013-11-04 CN CN201310536968.1A patent/CN103588416B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1193616A (en) * | 1997-03-18 | 1998-09-23 | 沈阳建筑工程学院 | Production of composite concrete additives from superfined flyash |
| CN102060463A (en) * | 2010-12-03 | 2011-05-18 | 山东宏艺科技股份有限公司 | Low-cost concrete antifreezing pumping aid and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106348642A (en) * | 2016-11-30 | 2017-01-25 | 张松波 | Low-slump-loss concrete pumping agent |
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| CN103588416B (en) | 2015-09-09 |
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