CN104478277A - Coagulation time regulator for collapse-prevention polycarboxylate water reducer - Google Patents
Coagulation time regulator for collapse-prevention polycarboxylate water reducer Download PDFInfo
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- CN104478277A CN104478277A CN201410683384.1A CN201410683384A CN104478277A CN 104478277 A CN104478277 A CN 104478277A CN 201410683384 A CN201410683384 A CN 201410683384A CN 104478277 A CN104478277 A CN 104478277A
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- carboxylic acid
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Abstract
The invention relates to a coagulation time regulator for a collapse-prevention polycarboxylate water reducer. The coagulation time regulator is prepared by mixing the components by weight: 8kg-12kg of triethanolamine, 15kg-25parts of anhydrous sodium sulphate, 5kg-10kg of sodium thiosulfate and 25kg-30kg of urea. The coagulation time regulator has the beneficial effects that a mother solution has good consistency, no sediment is generated after standing for a long time in a compounding process, meanwhile, the water reducing property and collapse-prevention property of the water reducer are not changed, and the purposes of high water reducing property and collapse-prevention property and proper coagulation time of the collapse-prevention water reducer are achieved.
Description
Technical field
The present invention relates to a kind of preparation method of concrete admixture, particularly relate to a kind of conditioning agent time of coagulation for collapse protective poly-carboxylic acid water reducing agent.
Background technology
In recent years, along with greatly developing of national basis construction, the demand of commerical ready-mixed concrete sharply increases, and as the polycarboxylate water-reducer of one of commerical ready-mixed concrete admixture, because of the performance of the multiple excellences such as its high water reducing ability, slump retaining, market share is also increasing.Meanwhile, the serial poly carboxylic acid series water reducer mother liquor of exploitation, synthesis, production diversification and different performance and multi-functional poly carboxylic acid series water reducer derived product, become the inexorable trend of current polycarboxylic acid series high efficiency water reducing agent development.
At present, for reaching engineering construction requirement, commerical ready-mixed concrete outside the requirement that initial flow degree reaches certain, its transport and pumping procedure in fluidity loss also must reach micro-loss even zero loss requirement, therefore require that polycarboxylate water-reducer must have the performance of high-thin arch dam.But the high-collapse-retentivity of polycarboxylate water-reducer will cause concrete to occur the phenomenon that time of coagulation is long, and this situation can have a strong impact on progress and the construction quality of engineering construction.
Summary of the invention
Technical problem to be solved by this invention is to provide that a kind of consistency is good, conditioning agent time of coagulation for collapse protective poly-carboxylic acid water reducing agent of the water-reducing property that do not change water reducer and function of slump protection.
For solving the problem, a kind of conditioning agent time of coagulation for collapse protective poly-carboxylic acid water reducing agent of the present invention, is characterized in that: this conditioning agent is mixed by the component of following mass parts: trolamine 8 ~ 12kg, Sodium sulfate anhydrous.min(99) 15 ~ 25kg, Sulfothiorine 5 ~ 10 kg, urea 25 ~ 30kg.
As above a kind of for collapse protective poly-carboxylic acid water reducing agent time of coagulation conditioning agent using method, it is characterized in that: first conditioning agent time of coagulation is dissolved by 1.0% ~ 3.0% of water reducer quality and be mixed in collapse protective poly-carboxylic acid water reducing agent, direct admixture when then mixing and stirring concrete.
The present invention compared with prior art has the following advantages:
1, because conditioning agent time of coagulation of the present invention's preparation effectively can solve long series of problems collapse protective poly-carboxylic acid water reducing agent time of coagulation, not only achieve the high-performance of concrete height diminishing and high-thin arch dam, and shorten concrete placement demould time, accelerate construction speed, concrete coagulating time is as shown in table 1 with the variation tendency of conditioning agent volume time of coagulation.
Table 1, the present invention are to concrete implementation result
Note: test the method specified according to GB 8076-2008 " concrete admixture " and JGT 223-2007 " polycarboxylate high performance water-reducing agent " and carry out.Concrete grade presses the concrete proportion design of C50: cement 450Kg/m3, flyash 80Kg/m3, sand 800 Kg/m3, stone 940 Kg/m3, water 170 Kg/m3, admixture 10.6 Kg/m3.
2, due to use in the present invention time of coagulation conditioning agent through compound screening, have chosen the good reagent with mother liquor consistency, therefore, the present invention is long placed in and generates without precipitation in compound process, do not change water reducing ability and the function of slump protection of water reducer simultaneously, achieve the object are suitable for collapse protection type water reducer height diminishing, high-thin arch dam and time of coagulation.
3, the present invention's volume is in use less, is equivalent to 6/20000 to ten thousand/10000ths of concrete cement material, to concrete without harm.
Embodiment
embodiment 1for conditioning agent time of coagulation for collapse protective poly-carboxylic acid water reducing agent, this conditioning agent is mixed by the component of following mass parts: trolamine 8kg, Sodium sulfate anhydrous.min(99) 15kg, Sulfothiorine 5 kg, urea 25kg.
This be used for collapse protective poly-carboxylic acid water reducing agent time of coagulation conditioning agent using method refer to: first conditioning agent time of coagulation is dissolved by 0% of water reducer quality and is mixed in collapse protective poly-carboxylic acid water reducing agent, direct admixture when then mixing and stirring concrete.
embodiment 2for conditioning agent time of coagulation for collapse protective poly-carboxylic acid water reducing agent, this conditioning agent is mixed by the component of following mass parts: trolamine 12kg, Sodium sulfate anhydrous.min(99) 25kg, Sulfothiorine 10 kg, urea 30kg.
This be used for collapse protective poly-carboxylic acid water reducing agent time of coagulation conditioning agent using method refer to: first conditioning agent time of coagulation is dissolved by 1.0 ~ 1.8% of water reducer quality and is mixed in collapse protective poly-carboxylic acid water reducing agent, direct admixture when then mixing and stirring concrete.
embodiment 3for conditioning agent time of coagulation for collapse protective poly-carboxylic acid water reducing agent, this conditioning agent is mixed by the component of following mass parts: trolamine 10kg, Sodium sulfate anhydrous.min(99) 20kg, Sulfothiorine 8kg, urea 28kg.
This be used for collapse protective poly-carboxylic acid water reducing agent time of coagulation conditioning agent using method refer to: first conditioning agent time of coagulation is dissolved by 1.8 ~ 2.5% of water reducer quality and is mixed in collapse protective poly-carboxylic acid water reducing agent, direct admixture when then mixing and stirring concrete.
embodiment 4for conditioning agent time of coagulation for collapse protective poly-carboxylic acid water reducing agent, this conditioning agent is mixed by the component of following mass parts: trolamine 8kg, Sodium sulfate anhydrous.min(99) 15kg, Sulfothiorine 5 kg, urea 25kg.
This be used for collapse protective poly-carboxylic acid water reducing agent time of coagulation conditioning agent using method refer to: first conditioning agent time of coagulation is dissolved by 2.5 ~ 3.0% of water reducer quality and is mixed in collapse protective poly-carboxylic acid water reducing agent, direct admixture when then mixing and stirring concrete.
comparative example 1concrete proportioning is by above-mentioned C50 design, and not admixture water reducer, the method specified according to GB 8076-2008 " concrete admixture " is tested the indexs such as concrete slump, time of coagulation and 28d strength ratio and entered.
Above-mentioned
embodiment 1 ~ 4in, collapse protective poly-carboxylic acid water reducing agent is the 199 type collapse protective poly-carboxylic acid water reducing agents that Lanzhou Hong Fang building material Science and Technology Ltd. produces, and solid content is 40%.This collapse protective poly-carboxylic acid water reducing agent addition content is 2.0% of concrete quality.
Claims (2)
1. for conditioning agent time of coagulation for collapse protective poly-carboxylic acid water reducing agent, it is characterized in that: this conditioning agent is mixed by the component of following mass parts: trolamine 8 ~ 12kg, Sodium sulfate anhydrous.min(99) 15 ~ 25kg, Sulfothiorine 5 ~ 10 kg, urea 25 ~ 30kg.
2. as claimed in claim 1 a kind of for collapse protective poly-carboxylic acid water reducing agent time of coagulation conditioning agent using method, it is characterized in that: first conditioning agent time of coagulation is dissolved by 1.0% ~ 3.0% of water reducer quality and be mixed in collapse protective poly-carboxylic acid water reducing agent, direct admixture when then mixing and stirring concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683384.1A CN104478277B (en) | 2014-11-25 | 2014-11-25 | A kind of regulator setting time for collapse protective poly-carboxylic acid water reducing agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410683384.1A CN104478277B (en) | 2014-11-25 | 2014-11-25 | A kind of regulator setting time for collapse protective poly-carboxylic acid water reducing agent |
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| CN104478277A true CN104478277A (en) | 2015-04-01 |
| CN104478277B CN104478277B (en) | 2016-08-24 |
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| CN201410683384.1A Active CN104478277B (en) | 2014-11-25 | 2014-11-25 | A kind of regulator setting time for collapse protective poly-carboxylic acid water reducing agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111606597A (en) * | 2020-05-13 | 2020-09-01 | 安徽路港通工程试验检测有限公司 | Polycarboxylic acid series concrete water reducing agent and production method thereof |
Citations (5)
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| CN1049327A (en) * | 1989-08-07 | 1991-02-20 | 盛天义 | The making method of pearlite foam article by expasion of cement |
| US5306344A (en) * | 1992-12-02 | 1994-04-26 | Edward C. Levy Company | Mixture of portland cement concrete materials for freeze/thaw resistance |
| CN1931952A (en) * | 2005-09-13 | 2007-03-21 | 苏笮斌 | Waterproof adhesive powder composition and its prepn process |
| CN102491671A (en) * | 2011-11-18 | 2012-06-13 | 大连科诺科技发展有限公司 | Concrete nano water-reducing super high-early-strength agent |
| CN104030599A (en) * | 2014-05-23 | 2014-09-10 | 中国水电十一局有限公司混凝土外加剂厂 | Antifreezing polycarboxylic acid composite pumping water reducing agent and application thereof |
-
2014
- 2014-11-25 CN CN201410683384.1A patent/CN104478277B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049327A (en) * | 1989-08-07 | 1991-02-20 | 盛天义 | The making method of pearlite foam article by expasion of cement |
| US5306344A (en) * | 1992-12-02 | 1994-04-26 | Edward C. Levy Company | Mixture of portland cement concrete materials for freeze/thaw resistance |
| CN1931952A (en) * | 2005-09-13 | 2007-03-21 | 苏笮斌 | Waterproof adhesive powder composition and its prepn process |
| CN102491671A (en) * | 2011-11-18 | 2012-06-13 | 大连科诺科技发展有限公司 | Concrete nano water-reducing super high-early-strength agent |
| CN104030599A (en) * | 2014-05-23 | 2014-09-10 | 中国水电十一局有限公司混凝土外加剂厂 | Antifreezing polycarboxylic acid composite pumping water reducing agent and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111606597A (en) * | 2020-05-13 | 2020-09-01 | 安徽路港通工程试验检测有限公司 | Polycarboxylic acid series concrete water reducing agent and production method thereof |
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| CN104478277B (en) | 2016-08-24 |
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