ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Thermal stresses are identified as one of the major causes of concrete failure. In order toconsider the heterogeneity of concrete at mesoscopic level, and to simulate its failure processesduring temperature change, a coupled thermo-mechanical model, which is on the basis of statisticaldamage model, is proposed. The model revealed the effect of the heterogeneity on concrete, and byanalysis one of the important thermal stresses, i.e. thermal mismatch stresses, which are caused bythermal mismatch between the aggregate and mortar due to uniform change in temperature, itindicate that the presence of thermal mismatch causes stress concentration along the interfacebetween aggregate and mortar, and the superpose of those stresses cause the crack propagation inthe line of the two aggregate. The crack patterns, simulated by the proposed model, show a goodagreement with the experimental results
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.941.pdf
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