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Title |
Evaluation of Flexural and Shear Behaviors of Lightweight Concrete Eco-Thermal Panel with Bottom Ash Aggregate and Air Foam
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Authors |
양근혁(Keun-Hyeok Yang) ; 문주현(Ju-Hyun Mun) |
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DOI |
https://doi.org/10.4334/JKCI.2021.33.3.245 |
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Keywords |
경량콘크리트 판넬; 바텀애시 골재; 기포; 휨; 전단 lightweight concrete panel; bottom ash aggregate; foam; flexure; shear |
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Abstract |
This study assesses the load-resistance grade of lightweight concrete insulation panels (ET-panels) made using bottom ash aggregates and air foams and reinforced with wire meshes on the basis of the evaluation of their flexural and shear performances. Six ET-panel specimens were prepared with variations of foam volume ratios () and longitudinal reinforcement ratios () and tested under a top two-point loading system. Test results showed that the wire meshes were promising in distributing flexural and diagonal shear cracks, thereby enhancing the flexural and shear strengths of the ET-panel. The displacement ductility ratio () of the ET-panel was comparable to that observed in conventional normal-weight concrete beams, when does not exceed twice the minimum longitudinal reinforcement ratios () of beams specified in KCI 2017. The flexural and shear strengths of an ET-panel can be conservatively estimated by the procedure of KCI 2017. Overall, all the ET-panel specimens satisfied the requirements for the Class 1 load-resistance recommended in KS F 4736.
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