摘要
通过立方体抗压试验分别研究了再生粗骨料取代率(RC)和玄武岩纤维体积掺量(RB)对玄武岩纤维增强再生混凝土(BFRRC)试块的抗压强度(f_(cu))、割线模量(E_(c))的影响规律,并对BFRRC的峰值应变进行了分析.研究表明:RB对BFRRC试块的抗压强度起到先增大后减小的作用;E_(c)随着RC的增大呈现下降的趋势;E_(c)随着RB的增大呈现先增大后减小的趋势;峰值应变随着RC的增大呈现先增大后减小的趋势;玄武岩纤维的掺入能明显增大试件的峰值应变.本研究发现BFRRC的最佳RB在0.05%~0.10%之间.
In this paper,the effects of recycled coarse aggregate replacement rate(RC)and basalt fiber replacement rate(RB)on the compressive strength(fcu)and secant modulus(E_(c))of basalt fiber reinforced recycled concrete(BFRRC)specimens are studied through cube compressive test,and the peak strain of BFRRC is analyzed.The results show that RB first increases and then decreases the compressive strength of BFRRC test block.E_(c) shows a downward trend with the increase of RC.E_(c) increases first and then decreases with the increase of RB.The peak strain increases first and then decreases with the increase of RC.The addition of basalt fiber can significantly increase the peak strain of the specimen.It is found that the optimal RB of BFRRC is between 0.05%~0.10%.
作者
郭少龙
陈为石
鹿群
李国栋
GUO Shaolong;CHEN Weishi;LU Qun;LI Guodong(Tianjin Chengjian University,Tianjin 300384,China;Rongchuang Beijing Regional Group Jinan Company,Jinan 250000,China;STECOL Corporation,Tianjin 300384,China)
出处
《天津城建大学学报》
CAS
2023年第6期385-390,共6页
Journal of Tianjin Chengjian University
基金
天津市技术创新引导专项(基金)(20YDTPJC00180)
中国电建市政建设集团有限公司2020年度重点项目(KHX2020-006)。
