Cohesive Fracturing and Stresses Caused by Hydration Heat in Massive Concrete Wall
Publication: Journal of Engineering Mechanics
Volume 129, Issue 1
Abstract
Avoidance of cracking damage due to hydration is an important objective in the design of nuclear reactor containments. Assessment of the safety against cracking requires a realistic material model and its effective numerical implementation. Toward this goal, the paper develops a comprehensive material model which includes approximate simulation of cracking based on the principles of cohesive fracture mechanics, as well as an up-to-date creep formulation with aging and temperature effects. A standard heat conduction model is incorporated in the analysis as well. Since the crack width is the most important characteristic of cracking damage, particular attention is paid to crack spacing which governs crack width. The results of stability analysis of parallel crack systems based on fracture mechanics are used to estimate the spacing of open cracks as a function of their depth. Numerical simulations clarifying various aspects of hydration heat effects are presented.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 129 • Issue 1 • January 2003
Pages: 21 - 30
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Oct 3, 2001
Accepted: May 3, 2002
Published online: Dec 13, 2002
Published in print: Jan 2003
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