| Gel time of calcium acrylate grouting material |
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| 作者姓名： | 韩同春 |
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| 作者单位： | Institute of |
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| 基金项目： | Project supported by the Education Department of the Railway
Ministry，China |
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| 摘 要： | INTRODUCTION One of the main advantages of chemical groutsis easy control of gel time (Mollamahmutoglu andLittlejohn, 1996; ?nupárek and Soucek, 2000).Calcium acrylate is a chemical grout usually used ingeotechnical engineering (Zelanko and Karfakis,1997), and is a water-soluble monomer that po-lymerizes in an aqueous solution. The rate of po-lymerization is controlled by the concentration ofcatalyst and activator. The polymerization of cal-cium acrylate is free radical chain pol…
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Gel time of calcium acrylate grouting material |
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| HAN Tong-chun.Gel time of calcium acrylate grouting material[J].Journal of Zhejiang University Science,2004(8). |
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| Authors: | 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. |
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| Keywords: | Chemical grouting Gel time Reaction kinetics Calcium acrylate Polymerization reaction |
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