CN106746875A - Anti- chamotte mould cement water reducing agent - Google Patents
Anti- chamotte mould cement water reducing agent Download PDFInfo
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- CN106746875A CN106746875A CN201510807351.8A CN201510807351A CN106746875A CN 106746875 A CN106746875 A CN 106746875A CN 201510807351 A CN201510807351 A CN 201510807351A CN 106746875 A CN106746875 A CN 106746875A
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- chamotte mould
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Abstract
The invention provides a kind of anti-chamotte mould cement water reducing agent, it is related to technical field of concrete additives, the weight proportion of its component is：Maleic anhydride 9%, acrylic acid 3.5%, acryloyl ammonium 8.5%, neopelex 7%, potassium permanganate 5.5%, NaOH 2%, water-soluble dextrin 3%, propylene glycol monomethyl ether 4%, balance of water.In the case of aggregate clay content 8%, its water-reducing rate may remain in 27.5% or so to the anti-chamotte mould polycarboxylate water-reducer, it is ensured that the compression strength of concrete.
Description
Technical field
The present invention relates to technical field of concrete additives, more particularly to a kind of anti-chamotte mould cement water reducing agent.
Background technology
Compared with the water reducers such as naphthalene system, aliphatic, sulfonated melamine, the advantage of poly carboxylic acid series water reducer shows：Slump retaining is good；Under identical flowing implementations, smaller is influenceed on cement setting time, the problems such as diminishing, bleed, slow setting, bleeding can be efficiently solved；Cement can be replaced with more slags or flyash, so that cost reduction；The harmful substances such as formaldehyde, naphthalene are not used, environment will not be polluted etc.；Simultaneously compared with other water reducers, clay content requirement of the polycarboxylate water-reducer to aggregate is higher, because the suction-operated of clay causes the water-reducing rate of polycarboxylate dehydragent to decline.During concrete-agitating, polycarboxylate dehydragent part by clay adsorption, adsorbed water reducer loses the function of its diminishing, so that the water-reducing rate reduction of polycarboxylate dehydragent, as the adsorbed water reducer of the increase of clay content also increases, therefore as the increase water-reducing rate of clay content of gathering materials also just is decreased, effect variation of collapsing is protected.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of anti-chamotte mould cement water reducing agent, even if clay content is higher in aggregate, the water reducer can still keep water-reducing rate higher.
In order to solve the above-mentioned technical problem, the present invention is adopted the following technical scheme that：A kind of anti-chamotte mould cement water reducing agent, the weight proportion of its component is：Maleic anhydride 9%, acrylic acid 3.5%, acryloyl ammonium 8.5%, neopelex 7%, potassium permanganate 5.5%, NaOH 2%, water-soluble dextrin 3%, propylene glycol monomethyl ether 4%, balance of water.
In the present invention, the method for preparing above-mentioned anti-chamotte mould polycarboxylate water-reducer is comprised the following steps：
The first step, each component is ready to according to above-mentioned weight proportion, and is contained in cell therefor, a part of water taken from the container of dress water and is added in reactor and the water in reactor is heated to 80-90 DEG C, then while stirring, while toward adding maleic anhydride in reactor；
Second step, after maleic anhydride is uniformly mixed, then toward sequentially adding neopelex, acrylic acid, acryloyl ammonium in reactor；
3rd step, is heated to 90-95 DEG C by solution in confined conditions, is incubated 1.5 hours；
3rd step, 40-45 DEG C is cooled to by solution, is then stirred while toward propylene glycol monomethyl ether, potassium permanganate is sequentially added in reactor, persistently stirring 30 minutes；
4th step, 25-30 DEG C is cooled to by solution, is then stirred while toward water-soluble dextrin, NaOH and remaining water is sequentially added in reactor, persistently stirring 20 minutes, you can obtain foregoing anti-chamotte mould polycarboxylate water-reducer.
The present invention obtain beneficial effect be：In the case of aggregate clay content 8%, its water-reducing rate may remain in 27.5% or so to the anti-chamotte mould polycarboxylate water-reducer that the present invention is provided, it is ensured that the compression strength of concrete.
Specific embodiment
As one embodiment of the present invention, a kind of anti-chamotte mould cement water reducing agent, the weight proportion of its component is：Maleic anhydride 9%, acrylic acid 3.5%, acryloyl ammonium 8.5%, neopelex 7%, potassium permanganate 5.5%, NaOH 2%, water-soluble dextrin 3%, propylene glycol monomethyl ether 4%, balance of water.
In the present invention, the method for preparing above-mentioned anti-chamotte mould polycarboxylate water-reducer is comprised the following steps：
The first step, each component is ready to according to above-mentioned weight proportion, and is contained in cell therefor, a part of water taken from the container of dress water and is added in reactor and the water in reactor is heated to 80-90 DEG C, then while stirring, while toward adding maleic anhydride in reactor；
Second step, after maleic anhydride is uniformly mixed, then toward sequentially adding neopelex, acrylic acid, acryloyl ammonium in reactor；
3rd step, is heated to 90-95 DEG C by solution in confined conditions, is incubated 1.5 hours；
3rd step, 40-45 DEG C is cooled to by solution, is then stirred while toward propylene glycol monomethyl ether, potassium permanganate is sequentially added in reactor, persistently stirring 30 minutes；
4th step, 25-30 DEG C is cooled to by solution, is then stirred while toward water-soluble dextrin, NaOH and remaining water is sequentially added in reactor, persistently stirring 20 minutes, you can obtain foregoing anti-chamotte mould polycarboxylate water-reducer.
Anti- chamotte mould polycarboxylate water-reducer is prepared according to said ratio and preparation method, hereafter, the anti-chamotte mould polycarboxylate water-reducer that will be obtained is carried out the test of water-reducing rate, concrete crushing strength by following concrete mix, and test result is as described below.
Concrete each component weight proportion：The weight portion of cement 32, the weight portion of river sand 73, the weight portion of handstone 33 of 0.3-0.8 centimetres of diameter, the weight portion of middle stone 44 of 1-1.5 centimetres of diameter, the weight portion of big stone 33 of 1.8-2.4 centimetres of diameter, the weight portion of clay 19.
In water-reducing rate, loss of slump, the test of concrete crushing strength, the adding proportion of anti-chamotte mould polycarboxylate water-reducer is 0.7%（Weight ratio）.
Water-reducing rate test result is：After the anti-chamotte mould polycarboxylate water-reducer of addition aforementioned proportion, water-reducing rate is 27.4%.Can be seen that the anti-chamotte mould polycarboxylate water-reducer by above-mentioned test result still has preferable water-reducing effect in the case where concrete clay content is higher, to saving cement and ensureing that concrete strength will be significant.
Concrete crushing strength experiment is with reference to GB8076-2008《Concrete admixture》, experiment concrete match ratio ratio of mud W/C=0.29,20 DEG C of experimental temperature.Concrete crushing strength test result is：In the case of the anti-chamotte mould polycarboxylate water-reducer of addition aforementioned proportion, concrete 3d intensity is 33.8 MPas, 40.3 MPas of 7d intensity, 55.1 MPas of 28d intensity.It is possible thereby to determine, the anti-chamotte mould polycarboxylate water-reducer reaches in concrete clay content and can still ensure in the case of 8% concrete with compression strength higher.
Above-described embodiment is the present invention preferably implementation, and in addition, the present invention can be realized with other manner, and any obvious replacement is within protection scope of the present invention on the premise of the technical program design is not departed from.
Finally, it should be emphasized that, in order to allow those of ordinary skill in the art more easily to understand improvements of the present invention relative to prior art, some descriptions of the invention have been simplified, and for the sake of clarity, present specification is omitted some other elements, and those of ordinary skill in the art should be aware that these elements for omitting also may make up present disclosure.
Claims (1)
1. anti-chamotte mould cement water reducing agent, the weight proportion of its component is：Maleic anhydride 9%, acrylic acid 3.5%, acryloyl ammonium 8.5%, neopelex 7%, potassium permanganate 5.5%, NaOH 2%, water-soluble dextrin 3%, propylene glycol monomethyl ether 4%, balance of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510807351.8A CN106746875A (en) | 2015-11-20 | 2015-11-20 | Anti- chamotte mould cement water reducing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510807351.8A CN106746875A (en) | 2015-11-20 | 2015-11-20 | Anti- chamotte mould cement water reducing agent |
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| CN106746875A true CN106746875A (en) | 2017-05-31 |
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| CN201510807351.8A Pending CN106746875A (en) | 2015-11-20 | 2015-11-20 | Anti- chamotte mould cement water reducing agent |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0103254A2 (en) * | 1982-09-11 | 1984-03-21 | BASF Aktiengesellschaft | Process for preparing copolymers of monoethylenically unsaturated mono- and dicarboxylic acids (anhydride) |
| CN102212161A (en) * | 2011-04-28 | 2011-10-12 | 广东轻工职业技术学院 | Dispersant used for wet grinding of ultrafine calcium carbonate, and preparation method and application thereof |
| CN104177543A (en) * | 2014-08-18 | 2014-12-03 | 武汉格瑞林葛店混凝土外加剂有限公司 | Concrete anti-mud agent and preparation method thereof |
| CN104371079A (en) * | 2014-11-27 | 2015-02-25 | 新疆德蓝股份有限公司 | Mud-resistant polycarboxylate superplasticizer |
-
2015
- 2015-11-20 CN CN201510807351.8A patent/CN106746875A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0103254A2 (en) * | 1982-09-11 | 1984-03-21 | BASF Aktiengesellschaft | Process for preparing copolymers of monoethylenically unsaturated mono- and dicarboxylic acids (anhydride) |
| CN102212161A (en) * | 2011-04-28 | 2011-10-12 | 广东轻工职业技术学院 | Dispersant used for wet grinding of ultrafine calcium carbonate, and preparation method and application thereof |
| CN104177543A (en) * | 2014-08-18 | 2014-12-03 | 武汉格瑞林葛店混凝土外加剂有限公司 | Concrete anti-mud agent and preparation method thereof |
| CN104371079A (en) * | 2014-11-27 | 2015-02-25 | 新疆德蓝股份有限公司 | Mud-resistant polycarboxylate superplasticizer |
Non-Patent Citations (1)
| Title |
|---|
| 武钦风等: "《混凝土施工与检测关键技术》", 28 February 2015 * |
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Application publication date: 20170531 |