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Reinforced Effect of Staple Fiber for Soil - Waste Stone Sludge  

Choi, Min-Kyu (한밭대학교 대학원)
Park, Beum-Sic (한밭대학교 대학원)
Kim, Young-Muk (한밭대학교 건설환경조형대학 건설환경공학과)
Publication Information
Journal of the Korean GEO-environmental Society / v.13, no.8, 2012 , pp. 45-55 More about this Journal
Abstract
This study is about the application of waste stone sludge as fill material. Waste stone sludge, weathered granite soil, and the mixture of the former and the latter strengthened with staple fiber are experimentally analyzed for measuring strength property. When staple fiber was mixed with waste stone sludge, weathered granite soil, and the mixture, there was a nearly linear relationship between the amount of the staple fiber and the increasing ratio of unconfined compressive strength. The increasing ratio of unconfined compressive strength was the largest in weathered granite soil. The increasing ratio of unconfined compressive strength of the mixture was similar to that of waste stone sludge. In the case of the mixture of weathered granite soil and waste stone sludge, an internal friction angle tended to increases rely on increasement of staple fiber content, whereas the change of cohesion was small. An internal friction angle was increased by 21 percent when staple fiber content is 0.75 percent. Comparing with weathered granite soil or waste stone sludge, strength parameters of the mixture were increased relatively. Thus strengthening effect of staple fiber in the mixture is expected.
Keywords
Waste stone sludge; Weathered granite soil; Mixture soil; Staple fiber; Shear strength;
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