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An Experimental Study on Estimate of the Optimal Grout Injection Ratio for Stabilization of Mudstone fill  

Lee, Jungsang (한양대학교 대학원 건설환경공학과)
Lee, Seungjun (한양대학교 대학원 건설환경공학과)
Kim, Yunjoong (한국도로공사 도로교통연구원)
Kim, Taesoo (한국도로공사 도로교통연구원)
Do, Jongnam (한국도로공사 도로교통연구원)
Chun, Byungsik (한양대학교 공과대학 건설환경공학과)
Publication Information
Journal of the Korean GEO-environmental Society / v.13, no.7, 2012 , pp. 31-38 More about this Journal
Abstract
Water glass chemical grouts are primarily used in ground injection projects. Natural and Durable Stabilizer (NDS), Space Grout Rocket (SGR), and other similar materials composing of inorganic accelerating agents with ultra fine cement have been gaining popularity as ground improvement material in South Korea. However, there are questions as to grouting results and environmental issues caused by NDS grout. This study uses the injection method in mudstone embarkment to evaluate the differences in strength, permeability, and optimum injection volume through the use of uniaxial and triaxial compression tests and fish poison tests for NDS and SGR materials. After 28 days, results showed SGR and NDS to have a 50% increase in strength and 50% decrease in permeability with the proper injection rate at 50%.
Keywords
NDS; Mudstone; Optimum injection volume; Uniaxial compression test; Triaxial compression test; SGR;
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