Paper Title:
Numerical Model for Thermal Cracking of Concrete
  Abstract

Thermal stresses are identified as one of the major causes of concrete failure. In order to consider the heterogeneity of concrete at mesoscopic level, and to simulate its failure processes during temperature change, a coupled thermo-mechanical model, which is on the basis of statistical damage model, is proposed. The model revealed the effect of the heterogeneity on concrete, and by analysis one of the important thermal stresses, i.e. thermal mismatch stresses, which are caused by thermal mismatch between the aggregate and mortar due to uniform change in temperature, it indicate that the presence of thermal mismatch causes stress concentration along the interface between aggregate and mortar, and the superpose of those stresses cause the crack propagation in the line of the two aggregate. The crack patterns, simulated by the proposed model, show a good agreement with the experimental results.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
941-944
DOI
10.4028/www.scientific.net/KEM.353-358.941
Citation
S. B. Tang, C. A. Tang, Z. Z. Liang, Q. L. Yu, "Numerical Model for Thermal Cracking of Concrete", Key Engineering Materials, Vols. 353-358, pp. 941-944, 2007
Online since
September 2007
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Price
$35.00
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