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Concrete workability regulator and preparation method thereof
The invention discloses a concrete workability regulator and a preparation method thereof. The concrete workability regulator is prepared the following monomer components by random copolymerization: (A) 2-acrylamido-2-methylpropane sulfonic acid; (B) unsaturated carboxylic acid or its salts; (C) acrylamide; and (D) N,N-methylenebisacrylamide. The molar ratio of monomer A and monomer B is 1:1-1:10, the molar ratio of monomer B and monomer C is 1:1-5:1, the monomer D accounts for the total quality of the polymerization of the 1*10<-4> -5*10 <-4>, and the concrete workability regulator has weight average molecular weight of 1*10<4>-1*10<5>. The concrete workability regulator can instantly absorb a large amount of water and slowly release, substantially improve the concrete workability, avoid water segregation and separation of concrete in early stage, also improve the concrete slump, and maintain the expansion degree of the concrete without loss in a long period of time.
Concrete workability regulator and preparation method thereof
The invention discloses a concrete workability regulator and a preparation method thereof. The concrete workability regulator is prepared the following monomer components by random copolymerization: (A) 2-acrylamido-2-methylpropane sulfonic acid; (B) unsaturated carboxylic acid or its salts; (C) acrylamide; and (D) N,N-methylenebisacrylamide. The molar ratio of monomer A and monomer B is 1:1-1:10, the molar ratio of monomer B and monomer C is 1:1-5:1, the monomer D accounts for the total quality of the polymerization of the 1*10<-4> -5*10 <-4>, and the concrete workability regulator has weight average molecular weight of 1*10<4>-1*10<5>. The concrete workability regulator can instantly absorb a large amount of water and slowly release, substantially improve the concrete workability, avoid water segregation and separation of concrete in early stage, also improve the concrete slump, and maintain the expansion degree of the concrete without loss in a long period of time.
Concrete workability regulator and preparation method thereof
ZHU JIANMIN (author) / LIU ZHAOBIN (author) / DONG ZHENPENG (author) / ZHOU LIMING (author) / YANG XUE (author)
2015-07-01
Patent
Electronic Resource
English
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