Effects of specimen shape and size on water loss and drying shrinkage of cement-based materials

被引：17

作者：

Ba Mingfang ^{[2
]}

Qian Chunxiang ^{[1
]}

Wang Hui ^{[1
]}

机构：

[1] Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China

[2] Ningbo Univ, Fac Architectural Civil Engn & Environm, Ningbo 315211, Zhejiang, Peoples R China

来源：

JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2013年 / 28卷 / 04期

基金：

浙江省自然科学基金;

关键词：

cement-based materials; drying shrinkage; water loss; effective drying thickness; CONCRETE CREEP;

D O I：

10.1007/s11595-013-0761-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of specimen size and shape on development of water loss and shrinkage of mortar and concrete respectively were investigated. The experimental results showed that the effects of specimen size and shape on water loss ratio were consistent with those on drying shrinkage strain. It is also indicated that drying shrinkage strain has obvious linear correlation with water loss ratios independent of specimen size and shape. The effects of specimen size and shape on the water loss ratio were embodied in established model of averaged relative humidity improved by considering effects of sequential hydration and calculated by finite difference method. Furthermore, the effects of specimen size and shape on drying shrinkage strain of concrete were experimentally deduced and applied to modify criterion EB-FIP1990. The comparison between experimental and calculated results shows that the modified EB-FIP1990 can be adopted to predict drying shrinkage strain of concrete with reasonable accuracy.

引用

页码：733 / 740

页数：8

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