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CLC number: TQ150.9; O646.5; X783

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Received: 2003-09-28

Revision Accepted: 2004-02-17

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Journal of Zhejiang University SCIENCE A 2004 Vol.5 No.8 P.928-931


Gel time of calcium acrylate grouting material

Author(s):  HAN Tong-chun

Affiliation(s):  Institute of Geotechnical Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   htc@zju.edu.cn

Key Words:  Chemical grouting, Gel time, Reaction kinetics, Calcium acrylate, Polymerization reaction

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HAN Tong-chun. Gel time of calcium acrylate grouting material[J]. Journal of Zhejiang University Science A, 2004, 5(8): 928-931.

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calcium acrylate is a polymerized grout, and can polymerize in an aqueous solution. The polymerization reaction utilizes ammonium persulfate as a catalyst and sodium thiosulfate as the activator. Based on the theory of reaction kinetics, this study on the relation between gel time and concentration of activator and catalyst showed that gel time of calcium acrylate is inversely proportional to activator and catalyst concentration. A formula of gel time is proposed, and an example is provided to verify the proposed formula.

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