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A Study on the Compression Characteristics of Decomposed Granite Soil Based on Single Particle Crushing Property  

함태규 (일본 야무구찌대학 공학부 토목공학과)
조용성 (전북대학교 공과대학 토목환경공학부)
김유성 (전북대학교 공과대학 토목환경공학부)
Publication Information
Journal of the Korean Geotechnical Society / v.20, no.8, 2004 , pp. 103-111 More about this Journal
Abstract
There are some problems in evaluating the bearing capacity of decomposed granite soils by general equations on account of their inherent compressibility and crushability. In order to investigate this kind of the engineering characteristics on decomposed granite soils in detail, it is necessary to how the micro property of the single particle composing the granite soils, and then the relevance to the macro characteristics of the soils has to be cleared. The reason why the single particle properties are not studied is first the difficulty to find out some regulating parameters, and secondly little understanding of its significance. Furthermore, the water in the decomposed granite soils accelerates the particle crushing. Consequently, increasing of compressibility and decreasing of shear strength would occur. Actually, when the ground settlement is a big issue in the embanked ground using the decomposed granite soils, the sensitive change of compressibility due to the change of water content in the ground becomes conspicuous. In this study, the single particle strength characteristics are studied and microscopic particle shape analyses are performed. In addition the compressibility of the decomposed granite soils and water content effect on the compressibility are analysed based on the test results.
Keywords
Compression characteristics; Crushing strengths; Decomposed Granite soil; Particle crushing property;
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