Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/27204
Title: Thermal induced stress and associated cracking in cement-based composite at elevated temperatures - Part I: thermal cracking around single inclusion
Authors: Fu, YF
Wong, YL
Tang, CA
Poon, CS 
Keywords: Thermal stress
Thermal induced cracking
Irregular inclusion
Numerical simulation
Heterogeneity
Issue Date: 2004
Publisher: Pergamon Press
Source: Cement and concrete composites, 2004, v. 26, no. 2, p. 99-111 How to cite?
Journal: Cement and concrete composites 
Abstract: This paper presents the development and verification of 2-D mesoscopic thermoelastic damage model used to numerically quantify the thermal stresses and crack development of a cement-based composite subjected to elevated temperatures. The program is then used to study the thermal fracture behavior of a cement-based matrix with a single inclusion. The results show that the mechanisms of thermal damage and fracture of the composite depend on (i) the difference between the coefficients of thermal expansion (CTE) of the inclusion and the cement-based matrix, (ii) the strengths of materials, and (iii) the heterogeneity of materials at meso-scale. The thermal cracking is an evolution process from diffused damage, nucleation, and finally linkage of cracks. If the CTE of the inclusion is greater than that of the matrix, radial cracks will form in the matrix. On the other hand, inclusion cracks and tangential cracks at the interface between inclusion and matrix will form if the CTE of the inclusion is smaller than that of the matrix.
URI: http://hdl.handle.net/10397/27204
ISSN: 0958-9465
EISSN: 1873-393X
DOI: 10.1016/S0958-9465(03)00086-6
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