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부서명 방재연구실
게재연도 2019
논문집명 Journal of Materials in Civil Engineering
논문명 Splitting Tensile Strength of Fiber-Reinforced and Biocemented Sand
저자 Sun-Gyu Choi, Tung Hoang, E. James Alleman
구분 SCI급
요약 This technical note examines the splitting tensile strength properties of natural sand treated with polyvinyl acetate (PVA) fiber in
combination with biocementation using the microbially induced calcite precipitation (MICP) process. Ottawa 20-30 sand was mixed with PVA fiber at five different fiber ratios (0.0%, 0.2%, 0.4%, 0.6%, and 0.8% by weight) and then stabilized using urease-producing bacteria plus urea and calcium chloride (CaCl2) solutions. Splitting tensile strength was determined for the treated sand samples. The results showed that the splitting tensile strength and splitting secant elastic modulus increased with increasing in either calcium carbonate content or fiber ratio. The use of PVA fibers together with MICP treatment could also increase the failure strain and the postfailure splitting tensile strength.
핵심어 Microbially induced calcite precipitation(MICP); Splitting tensile strength; Reinforced cemented sand; Calcium carbonate content
조회수 61
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