場所打ちコンクリートスラブの下地材の違いによるスラブ表面乾燥収縮ひび割れに関する実験的研究 : その2 刃物砥ぎかすスラッジ及び人工軽量骨材コンクリートの場合

概要

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This report is the comparison of cracking of concrete slab in-place, which was cast on the some subgrade; Compacted sand fill, styrene form, polyethylene sheet, excelsior board and steel sheet, by using normal concrete, conecrete containing cutter polishing residue and artificial lightweight concrete. The concrete slabs were cast under the hot and sunny day in summer. When concrete was cast on the pervious base (sand). the shrinkage cracking did not occurred at any concrete, On impervious base an excessive amounts of cracking occurred. The shrinkage cracking amounts depend on the degree of pervious ness, but the shrinkage cracking at artificial lightweight concrete did not occurred in dispersion Weather the shrinkage cracking occur at concentrate or dispersion, it seems the degree of water content of aggregate or containing materials and subgrade.
社団法人日本建築学会の論文
2004-08-30