CN105314913A - Preparation method of modifier for solving segregation and bleeding problem of polycarboxylate superplasticizer - Google Patents
Preparation method of modifier for solving segregation and bleeding problem of polycarboxylate superplasticizer Download PDFInfo
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- CN105314913A CN105314913A CN201510721941.9A CN201510721941A CN105314913A CN 105314913 A CN105314913 A CN 105314913A CN 201510721941 A CN201510721941 A CN 201510721941A CN 105314913 A CN105314913 A CN 105314913A
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Abstract
A preparation method of a modifier for solving segregation and bleeding problems of a polycarboxylate superplasticizer is prepared from the following ingredients by mass percent: 20-35 percent of pluronic polyols, 3-8 percent of sodium dodecyl benzene sulfonate, 5-20 percent of molasses and 0.1-4 percent of sodium gluconate. The preparation method has the following advantages: the compatibility between the modifier and polycarboxylic acid mother liquor is good, air bleeding is not caused, and concrete strength reduction is prevented. The modifier can effectively solve the problems of segregation and bleeding, caused by preparation of concrete from the polycarboxylate superplasticizer, remarkably improves the workability of concrete, meanwhile, improves the slump loss resistance, and prevents slump loss of concrete within a relatively long time. The preparation method is simple, rich in raw material source, nontoxic and pollution-free, and environmental-friendly. An application method is simple, low in cost, excellent in performance and suitable for popularization.
Description
Technical field
The present invention relates to building material field, particularly relate to a kind of solution polycarboxylate water-reducer segregation bleeding problem conditioning agent.
Background technology
Along with the continuous propelling of China's urbanization, rapidly, the requirement of construction industry to concrete technology is more and more higher, and traditional naphthalene system, aliphatic water reducing agent can not meet the technical requirements of modern concrete in Building technology development.High-efficiency water-reducing agent of poly-carboxylic acid is low with its volume, water-reducing rate is high, little loss of slump, to become the trend that admixture develops with the advantage such as good, the Product Green environmental protection of cement homogeny.But polycarboxylate water-reducer self water-reducing rate is high, very responsive to water, easily there is segregation excreting water phenomenon, when pumping, very easily stifled pump, make troubles, and the concrete homogeneity of building is poor to construction, strength development is uneven, affects safe mass and the work-ing life of concrete works.
At present, the common practice the solved the problem series of problems that to be exactly the appropriate thickening material of admixture produce with the segregation bleeding reducing polycarboxylate water-reducer susceptibility and bring.But the thickening material of the overwhelming majority, as polyacrylamide, ether of cellulose, polyvinyl alcohol etc. also exist inconsistent problem with polycarboxylate water-reducer, above-mentioned thickening material has air-entraining function, also can cause the reduction of concrete strength simultaneously.Therefore, research and develop a kind of conditioning agent solving polycarboxylate water-reducer segregation bleeding problem that is exclusively used in and be extremely necessary that there are significant economical, societal benefits.
Summary of the invention
For avoiding the deficiencies in the prior art, the invention provides a kind of solution polycarboxylate water-reducer segregation bleeding problem conditioning agent.
Technical scheme of the present invention is: a kind of preparation method solving polycarboxylate water-reducer segregation bleeding problem conditioning agent, this conditioning agent is made up of the component of following mass percent: the Pluronic polyols of 20%-35%, the Sodium dodecylbenzene sulfonate of 3%-8%, the molasses of 5%-20% and the glucose sodium saccharate of 0.1%-4%.
Comprise the following steps:
1) by mass percentage, the glucose sodium saccharate powder of the Sodium dodecylbenzene sulfonate of 3%-8% and 0.1%-4% is dissolved in excess water, mixing;
2) molasses of 5%-20% are added 1) solution, stir evenly, then add the Pluronic polyols of 20%-35%, the obtained conditioning agent of mixing.
Described Pluronic polyols is composited by two kinds or three kinds of polyalcohols materials.
Described molasses are the byproduct in sugar production process.
Solve a using method for polycarboxylate water-reducer segregation bleeding problem conditioning agent, the poly carboxylic acid mother liquor of 10%-20%, the conditioning agent of 2%-5% and excess water are mixed, is made into polycarboxylate water-reducer and uses.
Poly carboxylic acid mother liquor solid content is 40%.
The invention has the beneficial effects as follows: the consistency of conditioning agent of the present invention and poly carboxylic acid mother liquor is good, and not bleed, the reduction of concrete strength can not be caused.
Conditioning agent of the present invention effectively can solve polycarboxylate water-reducer concrete batching segregation bleeding problem, and significantly improve concrete workability, improve concrete slump retaining, concrete slump does not lose in a long time simultaneously.
Conditioning agent preparation method of the present invention is simple, abundant raw material source, and nontoxic pollution-free is environmentally friendly.
Conditioning agent using method of the present invention is simple, and cost is low, excellent performance, is suitable for promoting.
Embodiment
Below the present invention is described further;
A kind of preparation method solving polycarboxylate water-reducer segregation bleeding problem conditioning agent, this conditioning agent is made up of the component of following mass percent: the Pluronic polyols of 20%-35%, the Sodium dodecylbenzene sulfonate of 3%-8%, the molasses of 5%-20% and the glucose sodium saccharate of 0.1%-4%.
Comprise the following steps:
1) by mass percentage, the glucose sodium saccharate powder of the Sodium dodecylbenzene sulfonate of 3%-8% and 0.1%-4% is dissolved in excess water, mixing;
2) molasses of 5%-20% are added 1) solution, stir evenly, then add the Pluronic polyols of 20%-35%, the obtained conditioning agent of mixing.
Described Pluronic polyols is composited by two kinds or three kinds of polyalcohols materials.
Described molasses are the byproduct in sugar production process.
Solve a using method for polycarboxylate water-reducer segregation bleeding problem conditioning agent, the poly carboxylic acid mother liquor of 10%-20%, the conditioning agent of 2%-5% and excess water are mixed, is made into polycarboxylate water-reducer and uses.
Poly carboxylic acid mother liquor solid content is 40%.
Embodiment 1:
1) by mass percentage, 7% Sodium dodecylbenzene sulfonate and 4% glucose sodium saccharate powder are dissolved in 52% water, mixing;
2) 7% molasses are added 1) solution, stir evenly, then add 30% Pluronic polyols, the obtained conditioning agent of mixing.
3) join in 82% water by 16% poly carboxylic acid mother liquor (solid content is 40%) and 2% above-mentioned conditioning agent, mixing obtains polycarboxylate water-reducer.
Embodiment 2:
1) by mass percentage, 6% Sodium dodecylbenzene sulfonate and 4% glucose sodium saccharate powder are dissolved in 50% water, mixing;
2) 12% molasses are added 1) solution, stir evenly, then add 28% Pluronic polyols, the obtained conditioning agent of mixing.
3) join in 81% water by 16% poly carboxylic acid mother liquor (solid content is 40%) and 3% above-mentioned conditioning agent, mixing obtains polycarboxylate water-reducer.
Embodiment 3:
1) by mass percentage, 5% Sodium dodecylbenzene sulfonate and 3% glucose sodium saccharate powder are dissolved in 52% water, mixing;
2) 10% molasses are added 1) solution, stir evenly, then add 30% Pluronic polyols, the obtained conditioning agent of mixing.
3) join in 78% water by 18% poly carboxylic acid mother liquor (solid content is 40%) and 4% above-mentioned conditioning agent, mixing obtains polycarboxylate water-reducer, and the right and direct admixture of mixed concrete is used.
The polycarboxylate water-reducer obtained by embodiment of the present invention 1-3 is used for concrete, and this test strength grade of concrete is C30, and gel material content is 380kg/m
3, wherein cement 230kg/m
3, breeze 70kg/m
3, flyash 80kg/m
3, sand coarse aggregate ratio 48%, water cement ratio 0.45, carry out serviceability and Mechanics Performance Testing with reference to GB8076-2008 " concrete admixture ", it the results are shown in Table 1.
Table 1 embodiment testing data
Find out from testing data, only have embodiment 1 to occur bleeding in 60min bleeding process of the test, bleeding rate is only 0.1%, very low.Therefore the concrete mix of embodiment 1-3 anti-segregation bleeding excellent performance, and the 60min slump of mixture is also lost hardly, mixture is in good condition, constructability, and be conducive to the development of intensity, and the ultimate compression strength data in 7d and 28d length of time in table 1 are coincide.
The above only further illustrates technology contents of the present invention with embodiment, so that reader is easier to understand, but does not represent embodiments of the present invention and is only limitted to this, and any technology done according to the present invention extends or recreation, all by protection of the present invention.
Claims (6)
1. one kind solves the preparation method of polycarboxylate water-reducer segregation bleeding problem conditioning agent, it is characterized in that: this conditioning agent is made up of the component of following mass percent: the Pluronic polyols of 20%-35%, the Sodium dodecylbenzene sulfonate of 3%-8%, the molasses of 5%-20% and the glucose sodium saccharate of 0.1%-4%.
2. a kind of preparation method solving polycarboxylate water-reducer segregation bleeding problem conditioning agent according to claim 1, is characterized in that: comprise the following steps:
1) by mass percentage, the glucose sodium saccharate powder of the Sodium dodecylbenzene sulfonate of 3%-8% and 0.1%-4% is dissolved in excess water, mixing;
2) molasses of 5%-20% are added 1) solution, stir evenly, then add the Pluronic polyols of 20%-35%, the obtained conditioning agent of mixing.
3. a kind of preparation method solving polycarboxylate water-reducer segregation bleeding problem conditioning agent according to claim 1 and 2, is characterized in that: described Pluronic polyols is composited by two kinds or three kinds of polyalcohols materials.
4. a kind of preparation method solving polycarboxylate water-reducer segregation bleeding problem conditioning agent according to claim 1 and 2, is characterized in that: described molasses are the byproduct in sugar production process.
5. solve a using method for polycarboxylate water-reducer segregation bleeding problem conditioning agent, it is characterized in that: the poly carboxylic acid mother liquor of 10%-20%, the conditioning agent of 2%-5% and excess water are mixed, be made into polycarboxylate water-reducer and use.
6. a kind of using method solving polycarboxylate water-reducer segregation bleeding problem conditioning agent according to claim 5, is characterized in that: poly carboxylic acid mother liquor solid content is 40%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510721941.9A CN105314913B (en) | 2015-10-30 | 2015-10-30 | It is a kind of to solve the problems, such as the preparation method that polycarboxylate water-reducer isolates bleeding conditioning agent |
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| CN201510721941.9A CN105314913B (en) | 2015-10-30 | 2015-10-30 | It is a kind of to solve the problems, such as the preparation method that polycarboxylate water-reducer isolates bleeding conditioning agent |
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| CN105314913A true CN105314913A (en) | 2016-02-10 |
| CN105314913B CN105314913B (en) | 2017-08-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106084239A (en) * | 2016-06-28 | 2016-11-09 | 苏州弗克技术股份有限公司 | A kind of regulator for Polyether polycarboxylic-acid water reducer and synthetic method thereof |
| CN115594437A (en) * | 2022-09-30 | 2023-01-13 | 琼海鑫海混凝土有限公司（Cn） | Anti-segregation agent for concrete and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580354A (en) * | 2009-06-12 | 2009-11-18 | 福建科之杰新材料有限公司 | Polycarboxylic retarding high-performance water reducing agent for preparing concrete of middle and low strength grade |
| CN102515615A (en) * | 2011-12-29 | 2012-06-27 | 上海三瑞高分子材料有限公司 | Anti-freezing concrete water reducer |
| CN102603225A (en) * | 2012-03-14 | 2012-07-25 | 内蒙古科技大学 | Concrete pumping antifreezing agent with adjustable performances |
-
2015
- 2015-10-30 CN CN201510721941.9A patent/CN105314913B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580354A (en) * | 2009-06-12 | 2009-11-18 | 福建科之杰新材料有限公司 | Polycarboxylic retarding high-performance water reducing agent for preparing concrete of middle and low strength grade |
| CN102515615A (en) * | 2011-12-29 | 2012-06-27 | 上海三瑞高分子材料有限公司 | Anti-freezing concrete water reducer |
| CN102603225A (en) * | 2012-03-14 | 2012-07-25 | 内蒙古科技大学 | Concrete pumping antifreezing agent with adjustable performances |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106084239A (en) * | 2016-06-28 | 2016-11-09 | 苏州弗克技术股份有限公司 | A kind of regulator for Polyether polycarboxylic-acid water reducer and synthetic method thereof |
| CN106084239B (en) * | 2016-06-28 | 2019-05-14 | 苏州弗克技术股份有限公司 | A kind of regulator and its synthetic method for Polyether polycarboxylic-acid water reducer |
| CN115594437A (en) * | 2022-09-30 | 2023-01-13 | 琼海鑫海混凝土有限公司（Cn） | Anti-segregation agent for concrete and preparation method thereof |
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| CN105314913B (en) | 2017-08-25 |
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