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Journal of the Korean Society of Hazard Mitigation 2009;9(3):19-26.
Published online June 30, 2009.
화강풍화토를 이용한 CLSM의 공학적 특성평가
임유진, 서창범
Evaluation of Engineering Properties of CLSM using Weathered Granite Soils
Yu-Jin Lim, Chang-Beom Seo
Abstract
In this study, flowable backfill made with weathered granite soil is tested to provide basic engineering properties that can be used as design input to overcome settlement problems in road pavement due to low stiffness of backfill which is generated by porosity of the soil. For design purpose, a proper mixing ratio is developed first. Then several test methods including FF/RC, PMT and LDWT including axial compression test are adapted for checking stiffness and measuring axial strength of the material separately that can be used for design values.
Key Words: CLSM; Pressuremeter test(PMT); LDWT; FFRC; Dynamic modulus
요지
본 연구는 뒷채움재로 사용하는 입상재료의 다공성으로 인하여 발생하는 강성 부족과 이로 인한 변형발생 등의 문제를 극복하기 위한 방법으로서 국내 지표특성상 가장 풍부한 화강풍화토를 사용한 유동성뒷채움재(CLSM)의 배합특성을 분석하였으며 설계배합비에 따른 강도와 강성 발현 특성을 자유단공진주시험(FF/RC), 공내재하시험(PMT) 및 동적평판재하시험(LDWT) 등으로 분석하여 향후 뒷채움재용 화강풍화토 CLSM의 설계 및 시공에 필요한 기초 데이터를 제시하였다.
핵심용어: 공내재하시험; 동적평판재하시험; 자유단공진주시험; 동적탄성계수


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