Numerical calculation and influencing factors of the volume fraction of interfacial transition zone in concrete

作     者：SUN GuoWen SUN Wei ZHANG YunSheng LIU ZhiYong 

作者机构：Jiangsu Key Laboratory of Construction MaterialsSoutheast UniversityNanjing 211189China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2012年第55卷第6期

页      面：1515-1522页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Basic Research Program of China ("973" Project) (Grant No. 2009CB623200) the National High-Tech Research and Development Program of China ("863" Project)(Grant No. 2008AA030794) 

主　　题：concrete interfacial transition zone (ITZ) volume fraction Fuller distribution equal volume fraction distribution(EVF) sieve curve 

摘      要：The determination of volume fraction of interracial transition zone （ITZ） is very important for investigating the quantitative relationship between the microstructure and macroscopical property of concrete. In this paper, based on Lu and Torquato＇s most nearest surface distribution function, a calculating process of volume fraction of ITZ is given in detail according to the actual sieve curve in concrete. Then, quantitative formulas are put forward to measure the influencing factors on the ｜TZ vol- ume fraction. In order to validate the given model, the volume fractions of ITZ obtained by numerical calculation are compared with those by computer simulation. The results show that the two are in good agreement. The order of the factors influencing the ITZ volume fraction is the ITZ thickness, the volume fraction of aggregate and the maximum aggregate diameter for Fuller gradation in turn. The 1TZ volume fraction obtained from the equal volume fraction （EVF） gradation is always larger than that from the Fuller gradation for a given volume fraction of aggregate.