橡胶集料改性混凝土高温后单轴受压试验研究  

Experimental study on uniaxial compression of rubber aggregate modified concrete after high temperature

作　　者：马四军 白亚强 韩轶飞 MA Si-jun;BAI Ya-qiang;HAN Yi-fei(Project Quality Supervision Station of Zhongmou County,Zhongmou 451450,China;Multi-functional Design and Research Academy Limited Company,Zhengzhou University,Zhengzhou 450002,China;Henan Urban Planning Institute&Corporation,Zhengzhou 450044,China)

机构地区：[1]中牟县建设工程质量监督站,河南中牟451450 [2]郑州大学综合设计研究院有限公司,河南郑州450002 [3]河南省城乡规划设计研究总院股份有限公司,河南郑州450044

出　　处：《河南城建学院学报》2021年第2期29-33,41,共6页Journal of Henan University of Urban Construction

基　　金：国家自然科学基金项目(50678060)。

摘　　要：对橡胶集料改性混凝土高温后的力学性能进行了试验研究,配置0%、10%和20%三种橡胶掺量,分别进行了常温、300℃、500℃和700℃高温后的单轴受压试验。结果表明:在经历不同高温作用后,橡胶集料混凝土自身结构变得疏松,其峰值应力与受热温度成负相关关系,峰值应变与受热温度呈正相关关系,峰值应力随橡胶的掺入量呈负相关关系。高温后橡胶混凝土的应力-应变曲线更趋于平缓,但轴心抗压强度损失比普通混凝土要严重。The mechanical properties of rubber aggregate modified concrete after high temperature were studied.The uniaxial compression tests were carried out at room temperature,300℃,500℃and 700℃respectively with 0%、10%and 20%rubber content.The results show that the structure of rubber aggregate concrete becomes loose after different high temperature,and its peak stress has a negative correlation with the heating temperature There is a positive correlation between strain and temperature.After the loss of bearing capacity,the integrity of the specimen becomes poor,and the residual axial compressive strength decreases with the increase of heating temperature.

关 键 词：橡胶混凝土 高温 轴心受压 峰值应变 应力-应变 

分 类 号：TU528.041[建筑科学—建筑技术科学]