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Title |
Optimized Mixing Design of Lightweight Aerated Concrete by Response Surface Analysis
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Keywords |
경량기포콘크리트 ; 과산화수소 ; 반응표면분석 Box-Behnken(B-B) ; lightweight aearted concrete ; hydrogen peroxide ; response surface analysis ; Box-Behnken(B-B) method |
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Abstract |
This paper presents the optimized mixing design of lightweight aerated concrete using hydrogen peroxide. Design of experiments in order to the optimized mixing design was applied and commercial program (MINITAB) was used. Statistical analysis was used to Box-Behnken (B-B) method in response surface analysis. The influencing factors of experimental are unit cement content, water ratio and hydrogen peroxide ratio. According to the analysis of variance, at the hardened state, water ratio and hydrogen peroxide ratio affects on dried density, compressive strength and bending strength of lightweight aerated concrete, but unit cement content affects on only dried density. In the results of response surface analysis, to obtain goal performance, the optimized mixing design for lightweight aerated concrete using hydrogen peroxide were unit cement content of 800 kg/m3, water ratio of 44.33% and hydrogen peroxide ratio of 10%.
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