圧縮荷重を受ける鋼繊維補強コンクリートの応力 : ひずみ挙動

In this paper, mathematical expressions of stress-strain curves of steel fiber reinforced concrete (SFRC) up to a large compressive strain are proposed. These are based on experimental data obtained by using a new type of stiff compressive testing machine. The stress-strain relations are examined in terms of water-cement ratio, volume fraction of steel fiber, shape and size of specimen, placing direction of concrete, and curing condition. The variation of stress-strain curves of SFRC and the moment-curvature relationships of RC beams made with SFRC obtained in an earlier experiment are subsequently compared with those calculated by using the expressions in the Monte Carlo simulation