再生混凝土应力-应变全曲线试验研究

Experimental study on the stress-strain curve of recycled concrete

制作了26个100mm×100mm×300mm用于应力-应变试验的棱柱体试件(11个用于测试应力应变曲线,15个用于测试弹性模量),研究再生混凝土弹性模量及应力-应变全曲线随取代率的变化关系,提出再生混凝土应力-应变全曲线宜采用两段式表达,其方程与常规普通混凝土类似,但系数不同。

Produced 26 specimens of 100 mm×100mm×300mm,which 11 for testing stress-strain curves and 15 for testing elastic modulus,the relationship of elastic modulus and stress-strain curves of recycled concrete with the replacement of recycled aggregate is researched;the two-step expression of recycled concrete stress-strain curve is raised;its equation is similar with ordinary concrete＇s,but the coefficients are different.