Abstract
*Department of Ocean Engineering, Pukyong National University, Busan, Korea*Geotechnical Dept., Dodam E&C, Seoul, KoreaKEY WORDS:Recycling 재활용, Waste tire powder 폐타이어 분말, Lightweight soil 경량토, Triaxial compression test 삼축압축시험, CBR test 노상토 지지력비 시험ABSTRACT:This study investigated the shear and CBR characteristics of d redge soil-bottom ash-waste tire powder-mixed lightweight soil, which was developed to recycle dredged soil, bottom ash, and waste ti re powder. Test specimens were prepared with various contents o f waste tire powder ranging from 0 to 100% at 50% intervals by the weight of the dr y dredged soil. Several series of triaxial compression tests an d CBR tests were conducted. The shear strength characteristics of the lightweigh t soil were compared using two different shear tests (triaxial compression test and direct shear test). The experimental results indicated that the internal friction angle of the lightweight soil obtained by the direct shear tests was greater than that by the triaxial shear tests. However, the cohesion value obtained by the triaxial shear tests was greater th an that by the direct shear tests. The CBR value of the lightweight soil decreased from 35% to 15% as waste tire powder content increased교신저자 김윤태: 부산광역시 남구 대연3동 599-1, 051-629-6587, yuntkim@pknu.ac.kr
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