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A Study of Engineering Properties and Deformation Behavior of Weathered Rock Mass  

강추원 (조선대학교 자원공학과)
박현식 (조선대학교 자원공학)
김수로 (한국시설안전기술공단)
Publication Information
Explosives and Blasting / v.22, no.2, 2004 , pp. 33-43 More about this Journal
Abstract
The six grades weathering system is normally used in weathered rock classification. In this study. fresh and weathered rock block of grade I to V were sampled in Jang-soo ana but samples of the grade VI was omitted from this study. The variation quantities of chemical weathering indices with weathering degree are smaller than those of physical and mechanical properties. Increase of Weathering degree is well indicated by physical and mechanical properties such as strength, hardness, ultrasonic velocity and slake durability result. Especially, absorption and porosity ratio is a good indicator. As weathering proceeds. a number of the cracks affect the rock deformation. Therefore, stress-strain curves of weathered rocks in unconfined state are quite different from ones of fresh rocks.
Keywords
weathering grade; weathering index; weathering degree;
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