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Title |
Engineering Characteristics of Controlled Low Strength Material Using Inorganic Sludge
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Authors |
김영욱(Young-Wook Kim) ; 김기현(Gi-Hyeon Kim) ; 김영수(Young-Soo Kim) ; 장영일(Young-Il Jang) |
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DOI |
https://doi.org/10.4334/JKCI.2023.35.5.553 |
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Keywords |
무기성 슬러지; 유동성 채움재; 유동성; 블리딩; 압축강도 inorganic sludge; controlled low strength material; flowability; bleeding; compressive strength |
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Abstract |
In this study, the suitability of controlled low-strength material (CLSM) for managing inorganic sludge generated during aggregate extraction and production processes was investigated. The physical and mechanical characteristics of CLSM incorporating inorganic sludge were examined, taking into account unit binder content and mixing factors. Analysis of the inorganic sludge revealed that particles smaller than 75 μm constituted approximately 85 % and were classified as low plasticity clay (CL). The fluidity and resistance to material segregation in the CLSM utilizing inorganic sludge were found to be influenced by the solid content ratio of the cement composite. The blending conditions meeting the requirements for fluidity, material segregation resistance, and uniaxial compressive strength as specified by ACI Committee 229 were attainable with a unit binder content of 160 kg/m³ and a water-to-binder ratio of 475 %.
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