冻融循环作用下钢纤维混凝土的抗冲击性能试验研究  

Experimental study on impact resistance of steel fiber reinforced concrete after freeze-thaw cycles

作　　者：孙士富 范晓明 王立华 王生浩 王舜嵘 张思源 SUN Shifu;FAN Xiaoming;WANG Lihua;WANG Shenghao;WANG Shunrong;ZHANG Siyuan(College of Civil Engineering and Architecture,Shandong University of Science and Technology,Qingdao 266590,China;China Urban Construction Design and Research Institute Co.,Ltd.,Beijing 100000,China)

机构地区：[1]山东科技大学土木工程与建筑学院,山东青岛266590 [2]中国城市建设研究院有限公司,北京100000

出　　处：《混凝土与水泥制品》2025年第1期59-63,69,共6页China Concrete and Cement Products

摘　　要：采用分离式霍普金森压杆装置(SHPB)开展了冻融循环作用下钢纤维混凝土(SFRC)的动态受压力学性能试验,研究了冻融循环次数(0~100次)和钢纤维掺量(0、1%、2%、3%)对SFRC动态受压力学性能的影响。结果表明:随着冻融循环次数的增加,试件的动态抗压强度基本呈减小趋势,峰值应变增大;随着钢纤维掺量的增加,试件的动态抗压强度先增大后减小,峰值应变基本呈增大趋势,建议钢纤维最佳掺量为2%。The dynamic compressive properties of steel fiber reinforced concrete(SFRC)under freeze-thaw cycles were tested using a split Hopkinson compression bar device(SHPB).The effects of the number of freeze-thaw cycle(0~100 times)and the content(0,1%,2%,3%)of steel fiber on the dynamic compressive properties of SFRC were studied.The results indicate that as the number of freeze-thaw cycles increases,the dynamic compressive strength of the specimen generally decreases and the peak strain increases.With the increase of the content of steel fiber,the dynamic compressive strength of the specimen first increases and then decreases,and the peak strain shows an increasing trend.It is recommended that the optimal content of steel fiber be 2%.

关 键 词：钢纤维混凝土(SFRC) 冻融循环 抗冲击性能 峰值应力 峰值应变 

分 类 号：TU528.572[建筑科学—建筑技术科学]