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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

http://doi.org/10.1631/jzus.2004.0928


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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author="HAN Tong-chun",
journal="Journal of Zhejiang University Science A",
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doi="10.1631/jzus.2004.0928"
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T1 - Gel time of calcium acrylate grouting material
A1 - HAN Tong-chun
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Abstract: 
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.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1] HIAEIM (Huadong Investigation Academy of Electrical Industry Ministry), 1984. Technology of Chemical Grouting. Water and Electricity Publishing House, Beijing (in Chinese).

[2] Mollamahmutoglu, M., Littlejohn, G.S., 1996. A review of some of the properties of Geoseal MQ-5 and silicate-Hardener 600B grouts. Int. J. Rock Mech. Min. Sci., 33:44-48.

[3] Šnupárek, R., Soucek, K., 2000. Laboratory testing of chemical grouts. Tunnelling and Underground Space Technology, 15:175-185.

[4] Yamada, B., Azukizawaa, M., Yamazoea, H., Hillb, D.J.T., Pomery, P.J., 2000. Free radical polymerization of cyclohexyl acrylate involving interconversion between propagating and mid-chain radicals. Polymer, 41:5611-5618.

[5] Zang, Y.R., 1995. Chemical Reaction Kinetics. Nanjing University Press, Nanjing (in Chinese).

[6] Zelanko, J.C., Karfakis, M.G., 1997. Development of a polyester-based pumpable grout. Int. J. Rock Mech. Min. Sci., 34:595-606.

[7] Zhao, X.Z., 1995. Theory of Chemical Kinetics. Higher Education Press, Beijing (in Chinese).

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