期刊信息
主管单位:教育部
主办单位:重庆大学
主  编:刘汉龙
地  址:重庆市沙坪坝区沙正街174号 重庆大学期刊社 《土木与环境工程学报》编辑部
邮政编码:400044
电  话:023-65111322;023-65111863
电子邮件:xuebao@cqu.edu.cn
国际标准刊号:ISSN 2096-6717
国内统一刊号:CN 50-1218/TU
邮发代号:78-48
每期定价:¥20
全年定价:¥120
访问统计
  • 您是本站第3387356位读者
  • 今日访问644
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 342次   下载 216 本文二维码信息
码上扫一扫!
分享到: 微信 更多
橡胶混凝土断裂性能试验研究
曹国瑞1, 王娟2, 卿龙邦1, 杨朝霞2, 姜军1
1.河北工业大学 土木与交通学院, 天津 300401;2.郑州大学 水利与环境学院, 郑州 450001
摘要:
开展了橡胶混凝土三点弯曲梁断裂试验,获得了不同试件尺寸和橡胶掺量下的裂缝断裂全过程曲线,对橡胶混凝土断裂能GF及裂缝扩展K-R阻力曲线进行研究。基于数字图像相关方法,获得了橡胶混凝土试件垂直于裂缝扩展方向的全场位移和应变信息,对裂缝扩展的损伤断裂演化过程进行研究。结果表明:随试件尺寸增加和橡胶掺量提高,断裂能均呈现出上升趋势;K-R阻力曲线随试件尺寸变化表现出明显尺寸效应,橡胶掺量在0%~14%设计范围内时,K-R阻力曲线与橡胶掺量无关。
关键词:  橡胶混凝土  断裂能  K-R阻力曲线  数字图像相关  裂缝扩展过程
DOI:10.11835/j.issn.1674-4764.2018.06.013
分类号:TU528.1
基金项目:长江水利委员会长江科学院开放研究基金(CKWV2017517/KY);河南省高等学校重点科研项目计划(15A570010)
Experimental study on the fracture characteristics of crumb rubber concrete
Cao Guorui1, Wang Juan2, Qing Longbang1, Yang Zhaoxia2, Jiang Jun1
1.College of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, P. R. China;2.College of Water Conservancy and Environment Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
Abstract:
Based on the three-point bending beam fracture tests on the crumb rubber concrete with different specimen geometries and rubber volumes, the experimental curve of the whole fracture crack process was obtained, and the fracture energy and K-R resistance curve were studied. Through the digital image correlation method, the whole field displacement and strain distribution perpendicular to the direction of crack propagation were determined,from which the crack propagation and evolution process of fracture and damage can thus be examined. The results indicate that the fracture energy displays an increasing tendency with specimen geometry and rubber volume. The K-R resistance curve reveals the size effect by change of specimen geometries and shows no indicative relationship with 0%~14% rubber volume which was designed in this study.
Key words:  crumb rubber concrete  fracture energy  K-R resistance curve  digital image correlation  crack propagation process
Copyright@ 2008 All Rights Reserved.
关注微信二维码