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| RESEARCH ON C-S SLURRY DIFFUSION MECHANISM WITH TIME-DEPENDENT BEHAVIOR OF VISCOSITY |
| LI Shucai，LIU Rentai，ZHANG Qingsong，SUN Zizheng，ZHANG Xiao，ZHU Mingting |
| (Geotechnical and Structural Engineering Research Center，Shandong University，Jinan，Shandong 250061，China) |
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Abstract Grouting method is a common way to control engineering geological hazard；the movement law of grout diffusion has important significance to engineering design and construction. Application of SV vibration string viscometer to determine the time-dependent behavior of viscosity of cement-silicate(C-S) grout，viscosity function curve is obtained by function fitting. Constitutive function of generalized Bingham fluid is adopted to deduce the pressure distribution function of C-S grout in single plate fracture. During the test，the pressure distribution law of C-S grout diffusion under condition of fixed velocity is analyzed；under the same conditions，the pressure field investigated as well as velocity field are investigated with numerical method. Based on theoretical analysis，simulation test and numerical calculation results，diffusion mechanism of C-S grout is analyzed. It is hoped that the results will be constructive to application of the C-S grout.
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Received: 04 October 2012
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2013, Vol. 32 
