橡胶钢纤维再生骨料混凝土抗压性能研究

Experimental study on compressive properties of crumb rubber and steel fiber reinforced recycled aggregate concrete

通过对立方体和圆柱体试件的抗压试验,重点分析了橡胶掺量(0、4%、8%、12%和16%)对RSRAC新型材料的破坏形态、应力-应变曲线、抗压强度、弹性模量(刚度)和耗能能力(延性)的影响。试验结果显示,随着橡胶掺量的增大,RSRAC的强度和刚度呈现逐渐下降的趋势,但影响程度不大;RSRAC材料的延性随着橡胶掺量的增加则呈现先增后减的趋势,并在橡胶掺量为8%时获得延性的最大值。

This paper carried out a compressive test on cubes and cylinders, respectively.The effects of rubber content （0,4%, 8%, 12% and 16% ） on the compressive behaviors, including failure mode, stress-strain curves, compressive strength, Young＇s modulus （stiffness） and energy absorption capacity（ toughness ） of mixes were obtained and analyzed.The results showed that the compressive strength and stiffness of RSRAC mixes decreased with the increase of rubber content; suitable rubber content made contribution to the improvement of compressive touglmess of RSRAC mixes, with the larger toughness appeared at the rubber contents of 8%.