高強度化軽量気泡繊維補強コンクリートの破壊特性

概要

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The fracture properties of high-strength light-weight aerated fiber reinforced concrete (HLAFRC) were investigated. Optimum mixing condition of HLAFRC which consists of the high-strength paste matrix, the short cut fiber, the entrained air and the artificial light-weight aggregate, was clarified. Three-point bending tests on pre-notched beam specimen of HLAFRC were performed. Fracture parameters of specimen were analyzed based on the poly-linear approximation analysis of tension softening diagram by using the data of a load-load point displacement curve. In this investigation, very ductile concrete of about 1 specific gravity with 20 MPa compressive strength was obtained. The compressive strength and fracture energy of HLAFRC decreased with increase of the volume content of entrained air. The toughness of HLAFRC was significantly improved by mixing short cut fibers.
社団法人日本建築学会の論文
2000-02-28