Two-dimensional analysis of crack formation around aggregates in high-shrinkage cement paste

被引：22

作者：

Dela, BF ^{[1
]}

Stang, H ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Struct Engn & Mat, DK-2800 Lyngby, Denmark

来源：

ENGINEERING FRACTURE MECHANICS | 2000年 / 65卷 / 2-3期

关键词：

shrinkage; eigenstresses; restraint; cement paste; aggregate;

D O I：

10.1016/S0013-7944(99)00113-7

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A hybrid model has been used in an investigation of the fracture behavior of high-shrinkage cement paste restrained by a single aggregate. The effect of restraint on eigenstresses in an aggregate has been determined experimentally with the use of a newly developed stress sensor. Measured eigenstresses are used as input in a linear elastic fracture mechanical analysis modeling the upper and lower bounds for time of crack growth in high-shrinkage cement paste. Results from calculations based on these models are compared with results from tests carried out on the growth of cracks in high-shrinkage cement paste in a two-dimensional model. The test results are in good agreement with calculations using the models. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：149 / 164

页数：16