earticle

영어

This study investigated the effect of the mixture of the mechanical properties of the lightweight foamed concrete. The lightweight foamed concrete was fabricated to provide the method for the fire resistance and spalling prevention of the high performance concrete(HPC) attached with the stone panel. For the fluidity according to the mixing factors, it was increased with the increase of W/B. The target flow was achieved based on mixture adjustment regardless of W/B except for OPC 50 mixture. The sinking depth is within the range of KS, and the amount of foam showed similar tendency with the amount of foam. The apparent densities of the OPC 50 and OCL 50 also satisfied KS. Although OCL use less cement for the OPC, OCL 50 was most favorable at 7 and 28 days caused by the micro filler effect of the CKD and LSP. The thermal conductivity of all specimens were satisfied with KS. In conclusion, it is believed that OCL 45(unit volume weight : 450kg/㎥, W/B : 60～65%) was most appropriate for the packing materials for the fire resistance and spalling prevention.