Comparison between Hydraulic and Thermal Spalling in Heated Concrete Based on Numerical Modeling
Publication: Journal of Engineering Mechanics
Volume 133, Issue 6
Abstract
Two spalling mechanisms are generally quoted in literature. The first one is due to pore pressure buildup (tensile stresses). The second one is generated by restrained thermal dilation (compressive stresses). This paper presents a thermoporoelastic model in order to compare the thermal effect (restrained thermal dilation) and the hydraulic one (pore pressures). An infinite heated wall is studied analytically to express the different effective stresses exerted on the skeleton. Then, the origins of these stresses are identified. By comparing the thermal contribution and the hydraulic one, it was deduced that we cannot neglect any of them in the spalling mechanism.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 133 • Issue 6 • June 2007
Pages: 608 - 615
Copyright
© 2007 ASCE.
History
Received: Mar 7, 2006
Accepted: Oct 27, 2006
Published online: Jun 1, 2007
Published in print: Jun 2007
Notes
Note. Associate Editor: Yunping Xi
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