Inverse Analysis of Related Parameters in Calculation of Concrete Drying Shrinkage Based on ANSYS Design Optimization
Publication: Journal of Materials in Civil Engineering
Volume 25, Issue 6
Abstract
Drying shrinkage because of moisture diffusion is a critical factor influencing the durability of concrete structures. Numerical simulation of moisture diffusion and drying shrinkage inside concrete, on the basis of the mechanism of drying shrinkage, is significant to better understanding and predicting drying shrinkage-induced cracking. To correctly simulate the drying effect on concrete deformation, diffusion coefficient, surface factor and other factors are essentially required. This paper presents the simulations of shrinkage tests of concrete blended with fly ash and ground granulated blast furnace slag based on the theory of three-dimensional nonlinear moisture diffusion. The related parameters are identified by the inverse finite-element analysis approach using the design optimization module of ANSYS. The environmental humidity effect on shrinkage strain and the relationships between the identified parameters with the fly ash content are discussed.
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Published In
Journal of Materials in Civil Engineering
Volume 25 • Issue 6 • June 2013
Pages: 683 - 692
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Jul 22, 2011
Accepted: Jul 2, 2012
Published online: May 15, 2013
Published in print: Jun 1, 2013
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