橡胶混凝土软化曲线逆推分析  

Inverse analysis of softening curve of rubber concrete

作　　者：梁宁 薛刚 马从辉 LIANG Ning;XUE Gang;MA Conghui(Civil Engineering School,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学土木工程学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2022年第1期81-85,共5页Journal of Inner Mongolia University of Science and Technology

基　　金：国家自然科学基金资助项目(51868063).

摘　　要：为研究橡胶粒径和掺量对橡胶混凝土软化特性的影响,基于楔入劈拉试验,逆推获得了橡胶混凝土的双线性软化曲线参数,并对软化曲线参数的变化规律进行了研究.研究表明:橡胶掺入会降低混凝土的抗拉强度;橡胶掺入为0%~10%时,双线性软化曲线第一段线的斜率随掺量增加而降低,且较小橡胶粒径,降低的效果更显著;双线性软化曲线的尾端随橡胶掺量的增大而增大,且较小橡胶粒径,增大的效果更显著.In order to study the influence of rubber particle size and content on the softening characteristics of rubber concrete,based on the wedge split tensile test,the bilinear softening curve parameters of rubber concrete were obtained by using reverse calculation,and the change law of the softening curve parameters was investigated.Studies show that the incorporation of rubber will reduce the tensile strength of concrete;when the incorporation of rubber is 0%~10%,the slope of the first segment of the bilinear softening curve decreases with the increase in the amount of rubber,and the rubber particle size is smaller.The reduction effect is more significant;the tail end of the bilinear softening curve increases with the increase of the rubber content,and the smaller the rubber particle size is,the more significant the increase effect is.

关 键 词：橡胶混凝土 楔入劈拉 逆分析法 软化曲线 

分 类 号：TU528[建筑科学—建筑技术科学]