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R.S.O. Keskin, M. Grigoriu and K.C. Hover

School of Civil and Environmental Engineering
Cornell University, Ithaca, New York, United States of America

doi:10.4203/ccp.102.168

R.S.O. Keskin, M. Grigoriu, K.C. Hover, "A Probability-Based Method for Estimating Effective Diffusivity with Application to Mortar", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 168, 2013. doi:10.4203/ccp.102.168

Keywords: effective diffusivity, random heterogeneous materials, mortar, concrete, interfacial transition zone, random walk, local method.

Summary

In this paper, a probabilistic method is developed for estimating the effective diffusivity of a composite material. The method is simple to code, stable and suitable for parallel computing. Furthermore, the application of the method does not require scale separation. Numerical results are based on models of a porous binder and non-porous aggregates in two dimensions to reduce computation demands. Based on the experimental results of a reference mortar and the corresponding neat cement paste, the effective diffusivity of another mortar produced from the same cement paste with a different sand content is estimated. The resulting estimate agrees with the experimental result.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 102 PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: Paper 168 A Probability-Based Method for Estimating Effective Diffusivity with Application to Mortar R.S.O. Keskin, M. Grigoriu and K.C. Hover School of Civil and Environmental Engineering Cornell University, Ithaca, New York, United States of America doi:10.4203/ccp.102.168 purchase the full-text of this paper Full Bibliographic Reference for this paper R.S.O. Keskin, M. Grigoriu, K.C. Hover, "A Probability-Based Method for Estimating Effective Diffusivity with Application to Mortar", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 168, 2013. doi:10.4203/ccp.102.168 Keywords: effective diffusivity, random heterogeneous materials, mortar, concrete, interfacial transition zone, random walk, local method. Summary In this paper, a probabilistic method is developed for estimating the effective diffusivity of a composite material. The method is simple to code, stable and suitable for parallel computing. Furthermore, the application of the method does not require scale separation. Numerical results are based on models of a porous binder and non-porous aggregates in two dimensions to reduce computation demands. Based on the experimental results of a reference mortar and the corresponding neat cement paste, the effective diffusivity of another mortar produced from the same cement paste with a different sand content is estimated. The resulting estimate agrees with the experimental result. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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