基于灰关联理论的混凝土孔结构对强度和耐久性的影响分析

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英文篇名：Analysis of the influence of concrete pore structure on strength and durability based on grey relation theory 作者：柯杨 ; 冯诚 ; 周琴 ; 李天水 英文作者：KE Yang;FENG Cheng;ZHOU Qin;LI Tianshui;School of Civil Engineering and Architecture,Wuhan University of Technology;Cheng Yuan Huan Bao Co.,Ltd.; 关键词：混凝土孔结构 ; 灰色关联 ; 混凝土强度 ; 混凝土耐久性 英文关键词：concrete pore structure;;grey relativity;;concrete strength;;concrete durability 中文刊名：HLTF 英文刊名：Concrete 机构：武汉理工大学土木工程与建筑学院;武汉乘愿环保科技发展有限责任公司; 出版日期：2019-05-27 出版单位：混凝土 年：2019 期：No.355 基金：十二五国家科技支撑计划子课题(2014BAB15B01) 语种：中文; 页：HLTF201905046 页数：6 CN：05 ISSN：21-1259/TU 分类号：48-53

摘要

通过试验和分析得出混凝土的强度和耐久性与其微观孔结构联系紧密。利用灰色关联理论得到混凝土孔结构特征参数与混凝土强度、耐久性的灰色关联度,分析了不同孔结构特征参数对混凝土强度、耐久性影响程度。结果表明:小于20 nm的孔径分布与混凝土力学性能关联度最大;100～200 nm孔径分布对混凝土耐久性有较大的影响。
        By the test and analysis,it can conclude that the strength and durability of concrete are closely related to the micro pore structure.The grey relativity analysis is used to get the grey relational degree between the characteristic parameters of concrete pore structure and the strength and durability of concrete,and the influence degree of different pore structure characteristic parameters on the strength and durability of concrete is analyzed.The results show that the size distribution of less than 20 nm has the greatest correlation with the mechanical properties of concrete,and the pore size distribution of 100～200 nm has a greater influence on the durability of concrete.

引文

[1]TANG L P.A study of the quantitative relationship between strength and pore-size distribution of porous materials[J].Cement and Concrete Research,1986,16(1):87-96.
    [2]ODLER I,ABDUL-MAULA S.Investigations on the relationship between porosity structure and strength of hydrated portland cement pastes III.Effect of clinker composition and gypsum addition[J].Cement&Concrete Research,1987,15(2):320-330.
    [3]KUMAR R,BHATTACHARJEE B.Porosity,pore size distribution and in situ strength of concrete[J].Cement and Concrete Research,2003,33(2):155-164.
    [4]金南国,金贤玉,郭剑飞.混凝土孔结构与强度关系模型研究[J].浙江大学学报(工学版),2005(11):1680-1684.
    [5]谢超,王起才,李盛,等.不同水灰比、养护条件下混凝土孔结构、抗压强度与分形维数之间的关系[J].硅酸盐通报,2015,34(12):3695-3702.
    [6]MONTEIRO P J M,MEHTA P K.Concrete:microstructure,properties and materials[J].Mc Graw-Hill Professional,2006,13(4):499-499.
    [7]邓聚龙.灰色控制系统[M].华中工学院出版社,1993.
    [8]邓聚龙.灰理论基础[M].武汉:华中科技大学出版社,2002.
    [9]刘思峰,杨英杰,吴利丰.灰色系统理论及其应用[M].北京:科学出版社,2014.
    [10]吴中伟,等.高性能混凝土[M].北京:中国铁道出版社,1999.
    [11]张士萍,邓敏,吴建华,等.孔结构对混凝土抗冻性的影响[J].武汉理工大学学报,2008,30(6):56-59.