水泥稳定浆液最优配比及适用条件研究

doi:10.11799/ce201412032

Abstract

Abstract:

In order to determine the optimal proportion of cement stable slurry, variation characteristics of syneresis rate, viscosity, compressive strength of stone, initial setting time and final setting time, under different water cement ratio and different content of admixture, were studied. Results showed that: when water cement ratio is 0.8, incorporation of bentonite is 2.5% and incorporation of water reducing agent is 0.8%, each performance indexes of cement slurry meet the stable slurry requirement and most economical. Then, this ratio can be treated as the optimal proportion of cement stable slurry. Base on the flow characteristics in fracture, expressions between grouting pressure, diffusion radius and fracture width were given. Referring constructed engineering, the matching grouting methods of cement stable slurry were selected.

Key words: Stable Slurry, Optimal Proportion, Cement Grouting, Applicable Conditions, Shaft Grouting, Fracture Width

CLC Number:

TU457

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http://www.coale.com.cn/EN/Y2014/V46/I12/97

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Research on the Optimal Proportion and Applicable Conditions of Cement Stable Slurry

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