CN106746885A - A kind of cement water reducing agent and preparation method thereof - Google Patents
A kind of cement water reducing agent and preparation method thereof Download PDFInfo
- Publication number
- CN106746885A CN106746885A CN201611193423.5A CN201611193423A CN106746885A CN 106746885 A CN106746885 A CN 106746885A CN 201611193423 A CN201611193423 A CN 201611193423A CN 106746885 A CN106746885 A CN 106746885A
- Authority
- CN
- China
- Prior art keywords
- parts
- reducing agent
- water reducing
- water
- reducer
- 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
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
- 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
Abstract
The present invention relates to a kind of cement water reducing agent and preparation method thereof, wherein water reducer is mixed by the raw material of following weight portion：30~50 parts of polycarboxylate water-reducer, 3~10 parts of sodium alkyl benzene sulfonate, 1~5 part of sodium carboxymethylcellulose, 1~5 part of calcium formate, 5~15 parts of low mass molecule alcohol, 3~10 parts of triterpenoid saponin, mass concentration is 98% 10~20 parts of citric acid solution, 2~5 parts of aluminum sulfate, 1~3 part of viscosity modifier, 20~50 parts of water.The cement water reducing agent prepared by the present invention not only possesses that water-reducing rate is high, adaptable advantage, and is also equipped with antifreeze advantage, is adapted to promote.
Description
Technical field
The present invention relates to concrete additive technical field, and in particular to a kind of cement water reducing agent and preparation method thereof.
Background technology
, used as a kind of new material, it can be in concrete workability and cement consumption permanence condition for cement water reducing agent
Under, mixing water amount can be reduced, concrete strength is improved；Or under workability and intensity permanence condition, cement consumption is saved, because
This cement water reducing agent can not only improve the level of Building technology, improve the performance of concrete, can also save substantial amounts of cement
And manpower and materials, with value higher, this has been admitted facts.
But it is big that the water reducer for being used in the market has volume, and water reducing ability is poor, the shortcoming of plasticization effect difference, and
And the cement water reducing agent performance of in the market is single, only there is diminishing function, it is necessary to could change it by compounding other materials
Adaptability, and be difficult to control to.
The content of the invention
For the weak point that above-mentioned prior art is present, the invention provides a kind of cement water reducing agent and its preparation side
Method, prepares cement water reducing agent and not only possesses that water-reducing rate is high, adaptable advantage, and be also equipped with antifreeze by the present invention
Advantage.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of cement water reducing agent, is mixed by the raw material of following weight portion：
30~50 parts of polycarboxylate water-reducer
3~10 parts of sodium alkyl benzene sulfonate
1~5 part of sodium carboxymethylcellulose
1~5 part of calcium formate
5~15 parts of low mass molecule alcohol
3~10 parts of triterpenoid saponin
Mass concentration is 98% 10~20 parts of citric acid solution
2~5 parts of aluminum sulfate
1~3 part of viscosity modifier
20~50 parts of water.
Further, the weight average molecular weight of the polycarboxylate water-reducer is 15000~80000.
Further, the low mass molecule alcohol is methyl alcohol, ethylene glycol, glycerine or 1,2-PD.
Further, the viscosity modifier is cellulose ether, one or two mixture of xanthans.
Present invention also offers a kind of preparation method of cement water reducing agent, including following following steps：
（1）In reactor successively by weight add polycarboxylate water-reducer, sodium alkyl benzene sulfonate, sodium carboxymethylcellulose,
Calcium formate, low mass molecule alcohol and aluminum sulfate, heating stirring are warming up to 30 DEG C~60 DEG C, insulated and stirred 30min；
（2）To step（1）In solution add mass concentration be 98% citric acid solution, temperature keep 30 DEG C~60 DEG C, holding
After continuous stirring 20min, to viscosity modifier and triterpenoid saponin is added in solution, 30min is stirred；
(3) to step（2）In solution add water, stirring adjustment solution concentration, discharging, obtain final product cement water reducing agent.
Beneficial aspects of the invention are：
1st, polycarboxylate water-reducer has low-dosage, diminishing high, working performance of concrete good and the characteristics of early stage gain in strength is fast,
And be environmental friendly product, and the proportion of polycarboxylate water-reducer is higher, and reduction concrete that can be by a larger margin needs water
Amount；
2nd, triterpenoid saponin is mainly air-entraining effect, is plant production, can form a large amount of micro air bubbles, and improving concrete frost heave should
Power.When the temperature in use of concrete is lower than predetermined, the water in concrete freezes, because have that triterpenoid saponin formed is a large amount of small
Bubble, water is squeezed into bubble, and the influence to concrete structure is greatly reduced, and the later strength on concrete does not influence,
It is unlikely to appearance because scene temperature is less than the temperature for presupposing, and causes the icing of concrete reclaimed water, ultimately results in concrete
Accident by freeze injury occurs；
3rd, mass concentration is that 98% citric acid solution can make the water reducer have extremely strong adaptability, to various cement and additive
There is fabulous intermiscibility, Slow setting time is easily controllable, and to temperature strong adaptability, do not change because the temperature difference is big；
4th, aluminum sulfate has extremely strong dispersive property to cement and mineral admixture consumption, significantly improves the concrete anticracking after hardening
Performance, reduces shrinkage and creep, it is adaptable to commerical ready-mixed concrete, high-strength high-performance concrete, mass concrete, special reinforcing bar
Concrete, structures engineering hydro concrete.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
A kind of cement water reducing agent, is mixed by the raw material of following weight portion：
40 parts of polycarboxylate water-reducer
10 parts of sodium alkyl benzene sulfonate
3 parts of sodium carboxymethylcellulose
5 parts of calcium formate
7 parts of ethylene glycol
10 parts of triterpenoid saponin
Mass concentration is 98% 20 parts of citric acid solution
5 parts of aluminum sulfate
3 parts of cellulose ether
50 parts of water.
Wherein, the weight average molecular weight of polycarboxylate water-reducer is 15000~80000.
A kind of preparation method of cement water reducing agent, including following following steps：
（1）In reactor successively by weight add polycarboxylate water-reducer, sodium alkyl benzene sulfonate, sodium carboxymethylcellulose,
Calcium formate, low mass molecule alcohol and aluminum sulfate, heating stirring are warming up to 30 DEG C DEG C, insulated and stirred 30min；
（2）To step（1）In solution add mass concentration be 98% citric acid solution, temperature keep 30 DEG C, in lasting stirring
After 20min, to viscosity modifier and triterpenoid saponin is added in solution, 30min is stirred；
(3) to step（2）In solution add water, stirring adjustment solution concentration, discharging, obtain final product cement water reducing agent.
Embodiment 2
A kind of cement water reducing agent, is mixed by the raw material of following weight portion：
30 parts of polycarboxylate water-reducer
7 parts of sodium alkyl benzene sulfonate
5 parts of sodium carboxymethylcellulose
1 part of calcium formate
15 parts of glycerine
3 parts of triterpenoid saponin
Mass concentration is 98% 10 parts of citric acid solution
3 parts of aluminum sulfate
2 parts of xanthans
40 parts of water.
Wherein, the weight average molecular weight of polycarboxylate water-reducer is 15000~80000.
A kind of preparation method of cement water reducing agent, including following following steps：
（1）In reactor successively by weight add polycarboxylate water-reducer, sodium alkyl benzene sulfonate, sodium carboxymethylcellulose,
Calcium formate, low mass molecule alcohol and aluminum sulfate, heating stirring are warming up to 40 DEG C, insulated and stirred 30min；
（2）To step（1）In solution add mass concentration be 98% citric acid solution, temperature keep 40 DEG C, in lasting stirring
After 20min, to viscosity modifier and triterpenoid saponin is added in solution, 30min is stirred；
(3) to step（2）In solution add water, stirring adjustment solution concentration, discharging, obtain final product cement water reducing agent.
Embodiment 3
A kind of cement water reducing agent, is mixed by the raw material of following weight portion：
50 parts of polycarboxylate water-reducer
3 parts of sodium alkyl benzene sulfonate
1 part of sodium carboxymethylcellulose
3 parts of calcium formate
5 parts of methyl alcohol
7 parts of triterpenoid saponin
Mass concentration is 98% 15 parts of citric acid solution
2 parts of aluminum sulfate
1 part of cellulose ether
20 parts of water.
Wherein, the weight average molecular weight of polycarboxylate water-reducer is 15000~80000.
A kind of preparation method of cement water reducing agent, including following following steps：
（1）In reactor successively by weight add polycarboxylate water-reducer, sodium alkyl benzene sulfonate, sodium carboxymethylcellulose,
Calcium formate, low mass molecule alcohol and aluminum sulfate, heating stirring are warming up to 60 DEG C, insulated and stirred 30min；
（2）To step（1）In solution add mass concentration be 98% citric acid solution, temperature keep 60 DEG C, in lasting stirring
After 20min, to viscosity modifier and triterpenoid saponin is added in solution, 30min is stirred；
(3) to step（2）In solution add water, stirring adjustment solution concentration, discharging, obtain final product cement water reducing agent.
Table 1 is the performance test results of the cement water reducing agent obtained by embodiment 1 to 3
| Detection project | Set quota（JC475-2004） | Commercially available prod | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Water-reducing rate | ≥0 | 0 | ≥25 | ≥25 | ≥25 |
| Low temperature whether there is crystalline deposit | Have | Nothing | Nothing | Nothing | |
| - 7 days compressive strength rates | ≥10 | 2~5 | 20 | 22 | 23 |
| - 7+28 days compressive strength rate | ≥85 | 50~80 | ≥140 | ≥140 | ≥145 |
| - 7+56 days compression strength | ≥100 | 50~90 | ≥140 | ≥140 | ≥145 |
As can be seen from Table 1, the negative temperature conservation of the present invention intensity of 7 days（- 7 days compressive strength rates）Reach standard curing in 28 days
More than 20%, negative temperature conservation switchs to the intensity of standard curing 28 days after 7 days（- 7+28 days compressive strength rate）Reach standard curing
More than 140%, concrete service life is more durable, is a kind of cement water reducing agent with antifreeze function, is widely portable to north
The reinforced concrete structure of square winter construction.
The freezing point of cement water reducing agent in embodiment 1~3 is determined at -20~-30 DEG C, what it can be at -20~-30 DEG C is low
The lower work of temperature.
Claims (5)
1. a kind of cement water reducing agent, it is characterised in that mixed by the raw material of following weight portion：
30~50 parts of polycarboxylate water-reducer
3~10 parts of sodium alkyl benzene sulfonate
1~5 part of sodium carboxymethylcellulose
1~5 part of calcium formate
5~15 parts of low mass molecule alcohol
3~10 parts of triterpenoid saponin
Mass concentration is 98% 10~20 parts of citric acid solution
2~5 parts of aluminum sulfate
1~3 part of viscosity modifier
20~50 parts of water.
2. a kind of cement water reducing agent according to claim 1, it is characterised in that the polycarboxylate water-reducer is divided equally again
Son amount is 15000~80000.
3. a kind of cement water reducing agent according to claim 1, it is characterised in that the low mass molecule alcohol is methyl alcohol, second two
Alcohol, glycerine or 1,2- propane diols.
4. a kind of cement water reducing agent according to claim 1, it is characterised in that the viscosity modifier is cellulose
One or two mixture of ether, xanthans.
5. a kind of preparation method of cement water reducing agent, it is characterised in that including following following steps：
（1）In reactor successively by weight add polycarboxylate water-reducer, sodium alkyl benzene sulfonate, sodium carboxymethylcellulose,
Calcium formate, low mass molecule alcohol and aluminum sulfate, heating stirring are warming up to 30 DEG C~60 DEG C, insulated and stirred 30min；
（2）To step（1）In solution add mass concentration be 98% citric acid solution, temperature keep 30 DEG C~60 DEG C, holding
After continuous stirring 20min, to viscosity modifier and triterpenoid saponin is added in solution, 30min is stirred；
(3) to step（2）In solution add water, stirring adjustment solution concentration, discharging, obtain final product cement water reducing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611193423.5A CN106746885A (en) | 2016-12-21 | 2016-12-21 | A kind of cement water reducing agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611193423.5A CN106746885A (en) | 2016-12-21 | 2016-12-21 | A kind of cement water reducing agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106746885A true CN106746885A (en) | 2017-05-31 |
Family
ID=58896993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611193423.5A Pending CN106746885A (en) | 2016-12-21 | 2016-12-21 | A kind of cement water reducing agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106746885A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109293275A (en) * | 2018-10-22 | 2019-02-01 | 昆明瑞通混凝土外加剂有限公司 | A kind of dedicated high-strength compound water-reducing agent of gunite concrete and production technology |
| CN114380525A (en) * | 2021-11-17 | 2022-04-22 | 贵州天威建材科技有限责任公司 | Slump-retaining type concrete antifreezing water reducing agent and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767952A (en) * | 2009-12-29 | 2010-07-07 | 天津市飞龙砼外加剂有限公司 | Polycarboxylic acid water reducing agent and preparation method thereof |
| CN102140021A (en) * | 2011-05-13 | 2011-08-03 | 河北铁园科技发展有限公司 | Cement concrete antifreezer |
| CN103224341A (en) * | 2013-05-13 | 2013-07-31 | 十九冶成都建设有限公司 | High-early-strength antifreezing polycarboxylic-acid composite water reducing agent and application thereof |
-
2016
- 2016-12-21 CN CN201611193423.5A patent/CN106746885A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767952A (en) * | 2009-12-29 | 2010-07-07 | 天津市飞龙砼外加剂有限公司 | Polycarboxylic acid water reducing agent and preparation method thereof |
| CN102140021A (en) * | 2011-05-13 | 2011-08-03 | 河北铁园科技发展有限公司 | Cement concrete antifreezer |
| CN103224341A (en) * | 2013-05-13 | 2013-07-31 | 十九冶成都建设有限公司 | High-early-strength antifreezing polycarboxylic-acid composite water reducing agent and application thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109293275A (en) * | 2018-10-22 | 2019-02-01 | 昆明瑞通混凝土外加剂有限公司 | A kind of dedicated high-strength compound water-reducing agent of gunite concrete and production technology |
| CN109293275B (en) * | 2018-10-22 | 2021-01-05 | 昆明瑞通混凝土外加剂有限公司 | Special high-strength composite water reducing agent for sprayed concrete and production process thereof |
| CN114380525A (en) * | 2021-11-17 | 2022-04-22 | 贵州天威建材科技有限责任公司 | Slump-retaining type concrete antifreezing water reducing agent and preparation method thereof |
| CN114380525B (en) * | 2021-11-17 | 2022-12-06 | 贵州天威建材科技有限责任公司 | Slump-retaining type concrete antifreezing water reducing agent and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102515615B (en) | Anti-freezing concrete water reducer | |
| CN102140021B (en) | Cement concrete antifreezer | |
| CN104973817B (en) | A kind of concrete viscosity regulator being applicable to use with polycarboxylate water-reducer compatibility and preparation method thereof | |
| CN101549973B (en) | Compound concrete high efficiency water reducing agent | |
| CN103951304B (en) | A kind of concrete intensifier and its preparation method and application | |
| CN105000851B (en) | A kind of preparation method of the frost-resistant concrete with mine tailing as aggregate | |
| CN110407533B (en) | Recycled aggregate permeable brick and preparation method thereof | |
| CN103641358B (en) | Effective pumping aid in premixing commodity packing design polycarboxylic acid series | |
| CN111574119A (en) | Foam concrete with high light weight and performance and preparation method thereof | |
| CN102875052B (en) | Compound admixture for heat curing-free concrete in winter construction | |
| CN103467014B (en) | A kind of concrete | |
| CN102515614A (en) | High-performance cement concrete polycarboxylic liquid antifreezer | |
| CN102320770A (en) | Efficient liquid antifreezing agent for concrete, and preparation method thereof | |
| CN104496250A (en) | Concrete antifreeze pumping agent | |
| CN107721287B (en) | A kind of diatomite modified concrete and preparation method thereof | |
| CN104030599A (en) | Antifreezing polycarboxylic acid composite pumping water reducing agent and application thereof | |
| CN102701633B (en) | High-efficiency concrete air entraining agent and preparation method thereof | |
| CN106746885A (en) | A kind of cement water reducing agent and preparation method thereof | |
| CN104291729A (en) | Concrete air entraining agent and preparation method thereof | |
| CN101265049B (en) | Liquid concrete activating agent | |
| CN102659338A (en) | Polycarboxylic water reducer applicable to manufactured sand and preparation method of polycarboxylic water reducer | |
| CN102531447B (en) | Special additive for lytag concrete | |
| CN111484270A (en) | Ultra-long-distance concrete pumping agent | |
| CN109306021B (en) | Starch sulfate retarding superplasticizer and preparation method thereof | |
| CN101555110A (en) | Concrete antifreezer and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |