Finite element simulation of thermal cracking in massive hardening concrete elements using degree of hydration based material laws

被引：179
作者：
De Schutter, G [1 ]
机构：
[1] Univ Ghent, Dept Struct Engn, Magnel Lab Concrete Res, B-9052 Ghent, Belgium
来源：
COMPUTERS & STRUCTURES | 2002年 / 80卷 / 27-30期
关键词：
concrete; heat of hydration; degree of hydration; thermal stresses; finite elements; Kelvin chain; smeared cracking;
D O I：
10.1016/S0045-7949(02)00270-5
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
In massive hardening concrete elements, early age thermal cracking due to the heat of hydration might occur. At Ghent University, a simulation procedure is developed, based on the degree of hydration as a fundamental parameter. This parameter is related with the microstructural development during cement hydration. Accurate finite element simulations are obtained for the problem of early age thermal cracking, applying a staggered analysis. The time dependent material behaviour is implemented by means of a Kelvin chain. The cracking behaviour is implemented using a smeared cracking approach with non-linear softening behaviour. The results of the model are verified experimentally. (C) 2002 Civil-Comp Ltd. and Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：2035 / 2042
页数：8
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