再生混凝土单轴受压应力-应变全曲线试验

Experimental Investigation on Complete Stress-strain Curve of Recycled Concrete Under Uniaxial Loading

完成了不同再生粗骨料取代率下再生混凝土的单轴受压应力-应变全曲线试验,分析了再生粗骨料取代率对再生混凝土的应力-应变全曲线形状、弹性模量、峰值及极限应变的影响.研究表明:再生混凝土的应力-应变全曲线的总体形状与普通混凝土的相似,但曲线上各特征点对应的应力和应变值不同;再生混凝土的弹性模量明显低于普通混凝土的;再生混凝土的峰值应变与峰值应力大于普通混凝土的.

In this paper the complete stress-strain curves of recycled aggregate concrete with different recycled coarse aggregate replacement percentages are carried out, and the influences of varying recycled coarse aggregate contents on the complete stress-strain curve, peak stress, peak strain and elastic modulus are analyzed. The results show that the stress-strain curves of recycled aggregate concrete are similar to those of the conventional concrete, however, in terms of the recycled aggregate concrete, the peak strain is higher, and the elastic modulus is lower than those of the ordinary concrete.