화순지역 이암의 내구성과 강도특성 = Durability and Shear Strength of Mudstone in HwaSun Area

다국어 초록 (Multilingual Abstract)

The purpose of the present study is to examine geotechnical properties of slaking material, especially its slaking characteristics, crushing characteristics and shear behavior characteristics caused by an alternation of dryness and wetness. The data presented on this paper are based largely on such experiments as x-ray test, cation exchange capacity test, slaking test, crushing test, direct shear test and residual shear box test.
The experiments were carried out with the following results: Slaking rate and Crushing rate rise 1 to 1.5% with the alternation of dryness and wetness. Friction angle φ in natural state is about 40° , and cohesion c 0.33 kg/cm². With the alternation repeated, the former shows relatively narrow range of variation while the latter gradually decrease to 0.12 kg/cm² after five rounds of slaking. As to the result of residual shear box test, the maximum strength is equal to that of direct shear test. In case of its residual strength, however, shows wide range of variation, 28.61° to 38.16° and Cr gradually decrease from 0.16 kg/cm² to 0.08 kg/cm².