CN104496248A - Preparation method of water reducer for concrete - Google Patents
Preparation method of water reducer for concrete Download PDFInfo
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- CN104496248A CN104496248A CN201410610749.8A CN201410610749A CN104496248A CN 104496248 A CN104496248 A CN 104496248A CN 201410610749 A CN201410610749 A CN 201410610749A CN 104496248 A CN104496248 A CN 104496248A
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- concrete
- water reducer
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- potassium hydroxide
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Abstract
A related preparation method of a water reducer for concrete comprises the following concrete steps: a, adding 70%-80% of sulfamic acid, salicylic acid, water and majority of potassium hydroxide into a reaction kettle, then adding melamine and formaldehyde, so as to generate a transparent solution; b, performing heating reaction at 80 DEG C for 2 h, and using the residual 20%-30% of sulfamic acid to adjust pH of the reaction solution to 5.5; and c, performing heating reaction at 85 DEG C for 2 h, cooling to 20 DEG C, using the residual potassium hydroxide to adjust pH to 9, so as to obtain the transparent water reducer with the solid content of 55%. The concrete water-reducer preparation method employing the above design is simple, and the prepared water reducer is good in effect when being applied to concrete.
Description
Technical field
The present invention relates to concrete preparation field, especially a kind of preparation method of the reinforcement of concrete water reducer.
Background technology
Concrete refer to gathered materials by agglutinate (organic, inorganic or organo-mineral complexing), particulate state, chemical admixture that water and needs add and mineral admixture be by the compound of suitable proportion mixing, or (common is with gelling material, water, fine aggregate, coarse aggregate to form the matrix material with heap poly structure after sclerosis, mix admixture and mineral admixture when needing, coordinate by suitable proportion.
Water reducer refers under concrete workability and cement consumption permanence condition, can reduce mixing water amount, improve concrete strength; Or under workability and intensity permanence condition, save the admixture of cement consumption.Be that the method preparing water reducer is complicated at present, weak effect.
Summary of the invention
The technical problem to be solved in the present invention is: in order to overcome above-mentioned middle Problems existing, provide a kind of preparation method of the reinforcement of concrete water reducer.
The technical solution adopted for the present invention to solve the technical problems is: a kind of preparation method of the reinforcement of concrete water reducer, and concrete steps are as follows:
A. add 70% ~ 80% thionamic acid, Whitfield's ointment, water and most of potassium hydroxide in a kettle., then add trimeric cyanamide and formaldehyde, generate transparent solution;
B. reacting by heating 2h at 80 DEG C, the PH arranging reaction solution with 20% ~ 30% thionamic acid of remainder is 5.5;
C. at 85 DEG C, reheat reaction 2h, be cooled to 20 DEG C, adjust PH to be 9 in the potassium hydroxide of remainder, just obtain the transparent water reducer of solid content 55%.
Described thionamic acid, Whitfield's ointment, water, potassium hydroxide, trimeric cyanamide and formaldehyde ratio is each other 2.5:1.3:3.0:1.4:0.8:1.
75% thionamic acid is added in a kettle. in a.
The invention has the beneficial effects as follows: the preparation method of described a kind of the reinforcement of concrete water reducer, adopt the preparation method of the water reducer of this kind of design, preparation is simple, and the water reducer of making is effective for concrete.
Embodiment
Be described in further detail in conjunction with the present invention now.
The preparation method of a kind of the reinforcement of concrete water reducer of the present invention, concrete steps are as follows:
A. 75% thionamic acid, Whitfield's ointment, water and most of potassium hydroxide is added in a kettle., then trimeric cyanamide and formaldehyde is added, thionamic acid, Whitfield's ointment, water, potassium hydroxide, trimeric cyanamide and formaldehyde ratio is each other 2.5:1.3:3.0:1.4:0.8:1, generates transparent solution;
B. reacting by heating 2h at 80 DEG C, the PH arranging reaction solution with 25% thionamic acid of remainder is 5.5;
C. at 85 DEG C, reheat reaction 2h, be cooled to 20 DEG C, adjust PH to be 9 in the potassium hydroxide of remainder, just obtain the transparent water reducer of solid content 55%.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to right.
Claims (3)
1. a preparation method for the reinforcement of concrete water reducer, is characterized in that concrete steps are as follows:
A. add 70% ~ 80% thionamic acid, Whitfield's ointment, water and most of potassium hydroxide in a kettle., then add trimeric cyanamide and formaldehyde, generate transparent solution;
B. reacting by heating 2h at 80 DEG C, the PH arranging reaction solution with 20% ~ 30% thionamic acid of remainder is 5.5;
C. at 85 DEG C, reheat reaction 2h, be cooled to 20 DEG C, adjust PH to be 9 in the potassium hydroxide of remainder, just obtain the transparent water reducer of solid content 55%.
2. the preparation method of a kind of the reinforcement of concrete water reducer according to claim 1, is characterized in that: described thionamic acid, Whitfield's ointment, water, potassium hydroxide, trimeric cyanamide and formaldehyde ratio is each other 2.5:1.3:3.0:1.4:0.8:1.
3. the preparation method of a kind of the reinforcement of concrete water reducer according to claim 1, is characterized in that: add 75% thionamic acid in a kettle. in a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410610749.8A CN104496248A (en) | 2014-11-03 | 2014-11-03 | Preparation method of water reducer for concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410610749.8A CN104496248A (en) | 2014-11-03 | 2014-11-03 | Preparation method of water reducer for concrete |
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| CN104496248A true CN104496248A (en) | 2015-04-08 |
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| CN201410610749.8A Pending CN104496248A (en) | 2014-11-03 | 2014-11-03 | Preparation method of water reducer for concrete |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746854A (en) * | 2016-12-13 | 2017-05-31 | 张龙 | A kind of concrete prefabricated bridge panel with plasticizer |
| CN111484591A (en) * | 2020-04-14 | 2020-08-04 | 济南融祺建材有限公司 | Preparation method of retarding water reducer |
-
2014
- 2014-11-03 CN CN201410610749.8A patent/CN104496248A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746854A (en) * | 2016-12-13 | 2017-05-31 | 张龙 | A kind of concrete prefabricated bridge panel with plasticizer |
| CN106746854B (en) * | 2016-12-13 | 2019-03-05 | 兴义市黔城商品混凝土有限公司 | A kind of concrete prefabricated bridge panel with plasticizer |
| CN111484591A (en) * | 2020-04-14 | 2020-08-04 | 济南融祺建材有限公司 | Preparation method of retarding water reducer |
| CN111484591B (en) * | 2020-04-14 | 2023-03-31 | 山东恒丰天利新材料科技有限公司 | Preparation method of retarding water reducer |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150408 |