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High slump loss resistant concrete water reducer and preparation method thereof

A concrete water reducer, high slump retention technology, applied in the field of concrete admixtures, can solve the problems of unsatisfactory high-performance concrete, poor slump retention capacity, single component of water reducer, etc., to overcome large slump loss , Strong slump retention ability, high early strength effect

Inactive Publication Date: 2016-12-14
合肥永佳新材料科技有限公司
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Problems solved by technology

With the development of concrete science and the improvement of engineering requirements, the performance requirements of concrete water reducers are getting higher and higher. At present, the traditional concrete water reducers mainly include lignosulfonate, melamine and naphthalenesulfonate formaldehyde condensate. , these superplasticizers have relatively single components, unsatisfactory performance, poor slump retention capacity, and large slump loss, which cannot meet the requirements of high-performance concrete.

Method used

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  • High slump loss resistant concrete water reducer and preparation method thereof
  • High slump loss resistant concrete water reducer and preparation method thereof

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Embodiment

[0012] A high slump-retaining concrete water-reducing agent, which is composed of the following raw materials by weight (kg): aliphatic hydroxysulfonate condensate 11, β-naphthalenesulfonate sodium formaldehyde condensate 9, sulfonated phenolic resin 7, casein 4.5 , MPEGMA-MA-SMAS terpolymer 8, ammonium alginate 6, potassium humate 10, calcium chloride 6, sodium hydroxypropyl starch succinate 8, sodium dodecylbenzenesulfonate 4.5.

[0013] A preparation method of high slump-retaining concrete water reducer, comprising the following steps:

[0014] (1) Mix the aliphatic hydroxysulfonate condensate, β-naphthalenesulfonate sodium formaldehyde condensate, sulfonated phenolic resin, and MPEGMA-MA-SMAS terpolymer evenly, and then add it to the ball mill to control the ball-to-material ratio to 4:1, the speed is 500r / min, dry ball milling for 7h, then add sodium hydroxypropyl oxidized starch succinate, sodium dodecylbenzenesulfonate, potassium humate, control the ratio of ball to mat...

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Abstract

The invention discloses a high slump loss resistant concrete water reducer and a preparation method thereof. The water reducer is composed of the following raw materials in parts by weight: 9 to 14 parts of aliphatic hydroxyl sulfonate condensate, 7 to 11 parts of sodium beta-naphthalene sulfonate-formaldehyde condensate, 5 to 9 parts of sulfonated phenolic resin, 3 to 6 parts of casein, 6 to 10 parts of MPEGMA-MA-SMAS terpolymer, 4 to 8 parts of ammonium alginate, 8 to 12 parts of potassium humate, 4 to 7 parts of calcium chloride, 5 to 10 parts of sodium hydroxypropyl oxidized starch succinate, and 3 to 6 parts of sodium dodecyl benzene sulfonate. The water reducer prepared from aliphatic hydroxyl sulfonate condensate, sulfonated phenolic resin, MPEGMA-MA-SMAS terpolymer, and the like, has a strong slump retaining performance, overcomes the shortage that the slump loss of a high efficient water reducer is large, has the advantages of strong dispersion performance, high early strength, and good anti-permeability performance, and is especially suitable for preparing high slump loss resistant, high strength and durable concrete projects.

Description

technical field [0001] The invention relates to a high-slump-retaining concrete water reducer and a preparation method thereof, belonging to the technical field of concrete admixtures. Background technique [0002] Concrete has become the most commonly used building material in today's society, and concrete water reducer is one of the commonly used admixtures for concrete. It can greatly reduce the water consumption of concrete mixing under the condition of keeping the slump basically the same. It always has good workability during transportation and construction. With the development of concrete science and the improvement of engineering requirements, the performance requirements of concrete water reducers are getting higher and higher. At present, the traditional concrete water reducers mainly include lignosulfonate, melamine and naphthalenesulfonate formaldehyde condensate. , These superplasticizers have relatively single components, unsatisfactory performance, poor slum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B103/30
CPCC04B40/0039C04B2103/302C04B24/22C04B24/226C04B24/166C04B24/00C04B24/2688C04B24/12C04B24/24C04B22/124C04B24/38C04B24/20
Inventor 孙辉程伟王从伟
Owner 合肥永佳新材料科技有限公司
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