減圧・瞬時復圧処理した再生粗骨材コンクリートの基礎的物性

概要

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This study proposes an unique technique for improving qualities of concrete with recycled concrete coarse aggregate; a decompression and rapid release (DC-RR). The DC-RR procedure is applied after normal mixing of concrete with recycled aggregate. Through the DC-RR procedure, the micro structure of interfacial transition zones between recycled aggregate and new matrix mortar are estimated to be dramatically improved. In this paper, experimental studies are described on the effectiveness of the DC-RR procedure on some of the mechanical and physical properties of concrete with recycled concrete coarse aggregate. It was found that, by applying the DC-RR procedure, compressive strength of the concrete can be increased by about 15%, creep and carbonation depth can be reduced by about 20%.
社団法人日本建築学会の論文
2002-07-30