Accelerated Life Test of Concrete Under Multiple Factors Based on Three-parameter Weibull Distribution
QIAO Hongxia1, GUO Xiangke1, ZHU Binrong2
1 College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050; 2 College of Civil Engineering, Southeast China University, Nanjing 211189
Abstract: Aiming at the extrusive problem of poor durability of concrete in saline soil area of western China, the indoor accelerated life test of concrete was designed to simulate natural environment, including halide corrosion, wet and dry cycle, freeze-thaw cycle and solar radiation. The dynamic modulus of elasticity was adopted as the to failure threshold to evaluate the durability of concrete, and the accelerated life data of concrete were obtained. Based on the three-parameter Weibull distribution, the probability analysis software was employed to analyze and predict the life data, and the distribution overview plot-arbitrary cens of accelerated life was acquired. It could be found from the results that the sample points of accelerated life data could be well fitted by three-parameter Weibull distribution. Moreover, the failure time of concrete durability degradation and reliability of accelerated degradation process could be directly reflected by its threshold parameter and distribution overview plot-arbitrary cens, respectively, which provides a novel reliability basis for durability evaluation of concrete.
作者简介: 乔宏霞,兰州理工大学土木工程学院教授、博士研究生导师。2000年7月本科毕业于太原理工大学建筑与土木工程学院,2007年7月在兰州理工大学结构工程专业取得博士学位,2009—2012年在中国科学院青海盐湖研究所化学博士后流动站从事博士后研究工作。现为AEIC 专家库成员、国家科技部核心库专家、教育部学位中心学位论文评审专家、国家自然科学基金项目同行评议专家,入选九三学社中央组织的“院士导师计划”合作导师。主要从事普通混凝土与氯氧镁水泥混凝土耐久性评估与寿命预测的研究工作。近年来,在混凝土领域发表论文90余篇,包括Journal of Materials in Civil Engineering、Computers & Concrete、Materials Research Innovations和Journal of Chemical and Pharmaceutical Research等期刊文献。郭向柯,现为兰州理工大学土木工程学院硕士研究生,在乔宏霞教授的指导下进行研究。目前主要研究领域为氯氧镁水泥钢筋混凝土耐久性评估与寿命预测。
引用本文:
乔宏霞, 郭向柯, 朱彬荣. 三参数Weibull分布的多因素作用下混凝土加速寿命试验[J]. 材料导报, 2019, 33(4): 639-643.
QIAO Hongxia, GUO Xiangke, ZHU Binrong. Accelerated Life Test of Concrete Under Multiple Factors Based on Three-parameter Weibull Distribution. Materials Reports, 2019, 33(4): 639-643.
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2019, Vol. 33 
