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Grouting Effects of Microfine Cement in the Rock-based Sites  

Kong, Jinyoung (한양대학교 대학원 건설환경공학과)
Kim, Chanki (한양대학교 대학원 건설환경공학과)
Park, Jinhwan (경기관광공사)
Chun, Byungsik (한양대학교 공과대학 건설환경공학과)
Publication Information
Journal of the Korean GEO-environmental Society / v.11, no.12, 2010 , pp. 37-45 More about this Journal
Abstract
The particle size of microfine cement(MC) is so small that it can be injected into silt layer. But the more particle size is miniaturized, the more the cohesion increases. This phenomenon results in the decrease of the perviousness of MC. In this study, the grouting effects of microfine cement with superplasticizer to maintain cohesion low and that of normal cement were investigated in rock. To estimate the grouting effects, TCR/RQD test for rock quality, lugeon test, borehole loading test for coefficients of elastic and deformative stress, borehole shear test for shear stress, detection p~q~t(pressure~flow~time) chart tests were carried out. The results using MC show a better permeability, modulus of elasticity, deformation, charge per unit, and recover efficiency of grouting material than those of ordinary portland cement except shear stress.
Keywords
Grouting; Microfine cement; Lugeon test; p~q~t curve;
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Times Cited By KSCI : 2  (Citation Analysis)
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