摘要
为了减小冻融循环对再生混凝土的影响,提高再生混凝土在严寒地区的使用,系统地探索了玄武岩纤维丝、截面形式、再生骨料配合比及纤维布加固方式等变量的不同对再生混凝土力学性能的影响程度.试验结果表明:掺加玄武岩纤维丝以及截面形式对再生混凝土力学性能有一定影响,但经历冻融循环使得再生混凝土力学性能大幅度降低;纤维加固可以将冻融后再生混凝土的力学性能大幅提高,但不同的加固方式提高程度略有差异.同时,针对相关情况提出了相应的优化加固方案.
The different influence of the cellosilk of the basalt, the section form, the replacement rate of re-cycled concrete, and the reinforcement of FRP on the mechanical property of the recycled concrete is sys-tematically investigated in order to weaken the influence of freeze-thaw cycle on recycled concrete and ame-liorate the durability of recycled concrete in cold regions. The experimental result shows that the adultera-tion of the cellosilk of the basalt and the section form both have certain influence on the mechanical proper-ty of the recycled concrete. However, the strength of recycled concrete without FRP reinforcement is signifi-cantly reduced by freeze-thaw cycle. Surprisingly, FRP reinforcement can improve the ultimate strength of the mechanical property of the recycled concrete. The enhancement of the strength varies depending on dif-ferent reinforcement methods. The paper puts forward an optimized reinforcement plan based on a systematic research.
作者
何媛媛
董江峰
董世海
王清远
HE Yuanyuan;DONG Jiangfeng;DONG Shihai;WANG Qingyuan(Institute of New Energy and Low-carbon Technology,Sichnan University,Chengdu 610065,China;College of Architecture ＆ Environment,Sichuan University,Chengdu 610065,China;Key Laboratory of Deep UndergTound Science and Engineering of Ministry of Education,Sichnan University,Chengdu 610065;Chengdu Engineering Co.,Ltd.,Chengdu 610072,China;Chengdu University,Chengdu 610106,China)
出处
《成都大学学报（自然科学版）》
2018年第3期225-229,共5页
Journal of Chengdu University（Natural Science Edition）
关键词
再生混凝土
冻融循环
纤维加固
力学性能
recycled concrete
freeze-thaw cycle
FRP reinforcement
mechanical properties
