基于落锤冲击试验的钢渣细骨料混凝土抗冲击性能研究  

Study on Impact Resistance of Steel Slag Fine Aggregate Concrete Based on Drop Hammer Impact Test

作　　者：刘秋雨 薛刚[1] 谭俊清 李京军[1] LIU Qiuyu;XUE Gang;TAN Junqing;LI Jingjun(College of Civil Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China;Baotou Steel Group Energy Saving and Environmental Protection Technology Industry Co.,Ltd.,Baotou 014010,China)

机构地区：[1]内蒙古科技大学土木工程学院,包头014010 [2]包钢集团节能环保科技产业有限责任公司,包头014010

出　　处：《硅酸盐通报》2023年第12期4399-4407,共9页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(52168032);2023年度自治区直属高校基本科研业务费项目(2023RCTD025)。

摘　　要：为研究钢渣细骨料混凝土的抗冲击性能,分别以10%、20%、30%替换率的钢渣等体积取代细骨料制备混凝土试件,通过落锤冲击装置对其进行抗冲击试验,研究其冲击寿命及损伤演化规律,并与普通混凝土抗冲击性能进行对比。结果表明:掺入钢渣细骨料可以提高混凝土的抗冲击性能,落锤质量较小时,钢渣对混凝土冲击寿命的提高幅度较大;混凝土抗冲击试验结果存在一定离散性,钢渣混凝土的冲击寿命符合威布尔分布。基于威布尔分布,对不同失效概率下的冲击寿命进行了估计,并建立冲击损伤演化方程,用于计算不同钢渣掺量的混凝土达到一定损伤变量时对应的冲击次数。To investigate the impact resistance of steel slag fine aggregate concrete,the concrete specimens were prepared by replacing fine aggregate with equal volume of steel slag at replacement rates of 10%,20%and 30%,respectively.The impact resistance test was carried out by drop hammer impact device to study the impact life and damage evolution law,and the impact resistance of specimen was compared with ordinary concrete.The results show that the addition of steel slag fine aggregate can improve the impact resistance of concrete,and the impact life is obviously improved when the drop weight is small.There is a certain degree of dispersion in the results of concrete impact resistance test,and the impact life of steel slag concrete conforms to Weibull distribution.Based on the Weibull distribution,the impact life under different failure probabilities is estimated,and the impact damage evolution equation is established to calculate the corresponding impact times when the concrete with different steel slag content reaches a certain damage variable.

关 键 词：钢渣混凝土 抗冲击性能 威布尔分布 统计损伤分析 抗弯冲击试验 

分 类 号：TU528.44[建筑科学—建筑技术科学]