SRX聚合物级配碎石强度特性分析  

Strength Characteristics Analysis of SRX Polymer Graded Crushed Stone

作　　者：何丽红 马悦帆 邓稳 朱洪洲 郝增恒 HE Lihong;MA Yuefan;DENG Wen;ZHU Hongzhou;HAO Zengheng(School of Materials Science&Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Architectural Design Institute Co.,Ltd.,Chongqing 400010,China;Chongqing Zhixiang Paving Technology Engineering Co.,Ltd.,Chongqing 400060,China)

机构地区：[1]重庆交通大学材料科学与工程学院,重庆400074 [2]重庆市设计院有限公司,重庆400010 [3]重庆市智翔铺道技术工程有限公司,重庆400060

出　　处：《重庆交通大学学报（自然科学版）》2022年第4期76-80,共5页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：材料工程重庆市研究生联合培养基地基金项目(201901);云南省交通科学研究院基金项目〔云交科2014(A)09〕。

摘　　要：SRX聚合物是一种柔性基层材料稳定剂。采用重型击实方法确定SRX聚合物级配碎石的最佳含水率与最大干密度;以加州承载比(CBR)值为强度评价指标,分析级配类型、SRX聚合物掺量、养生龄期及相对含水率对SRX聚合物级配碎石强度的影响规律。研究结果表明:密级配JGCBR值较间断级配GM高,且随SRX掺量和养生龄期增加而增大;SRX聚合物掺量增加,其间接抗拉强度也随之增大;同时得到相对含水率Δω与相对强度R_(泡)/R_(干)的变化规律,并给出两者函数关系式。SRX polymer is a kind of stabilizer for flexible base material.The best moisture content and maximum dry density of SRX polymer graded crushed stone were determined by heavy compaction method.Taking the California bearing ratio(CBR)value as the strength evaluation index,the influence law of grading type,SRX polymer content,curing age and relative water content on the strength of SRX polymer graded crushed stone was analyzed.The results show that the JG CBR value of dense grade is higher than that of intermittent grade GM,and increases with the increase of SRX content and curing age.The indirect tensile strength increases with the increase of SRX polymer content.Meanwhile,the variation law of relative water content“Δω”and the relative strength R _(bubble)/R _(dry) is obtained and the functional relationship between them is given.

关 键 词：道路工程 SRX 相对含水率 CBR值 影响因素 

分 类 号：U414[交通运输工程—道路与铁道工程]