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Title |
Fundamental Properties of Low Strength Concrete Mixture with Blast Furnace Slag and Sewage Sludge
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Keywords |
저강도 콘크리트 ; 하수슬러지 ; 고래슬래그미분말 ; 쇄석미분말 ; 재활용자원 Low strength concrete ; Sewage sludge ; Blast furnace slag ; Crushed stone ; Recycling resources |
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Abstract |
In this study, in order to establish a plan that will enable safe use of renewable resources such as diverse industrial by-products and urban recycled materials, we conducted experiments that focused on flow, bleeding, compressive strength and environmental pollution evaluation to evaluate the material properties of low strength concrete using BFS and SS. In the case of low strength concrete using BFS and SS, blending of at least BFS 6000 within a 30% range regardless of the type of sand used was found to be the most effective approach for improving the workability by securing the minimum unit quantity of water, restraining the bleeding ratio and establishing compressive strength by taking account of the applicability at the work site. In particular, in view of the efficient use of SS, the optimal mixing condition was found to be the mixing of BFS 8000 with in the 30% range, not only for improving the workability restraining the bleeding ratio and establishing the compressive strength but also for application to the work site. Further, the results of tests on hazardous substance content and those of elution tests conducted on soil cement using SS indicated that all values satisfied the environmental standards without any harmful effects on the surrounding environment.
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