Mihai, I. C., Bains, A. and Grassl, P. (2022) Modelling of Cracking Mechanisms in Cementitious Materials: The Transition from Diffuse Microcracking to Localized Macrocracking. In: International Conference on Computational Modelling of Concrete and Concrete Structures (EURO-C 2022), Vienna, Austria, 23 - 26 May 2022, ISBN 9781032327242 (doi: 10.1201/9781003316404-26)
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Abstract
Cracking in cementitious materials still poses significant and interesting modelling challenges and structural designers need reliable tools for an accurate prediction of crack widths. The paper presents a numerical study into cracking mechanisms in cement based materials using lattice simulations employing the model of Grassl & Antonelli (2019). Furthermore, a micromechanics based constitutive model is proposed that focuses on representing the transition from diffuse microcracking to localized macrocracking. The model includes an Eshelby based two-phase composite solution to represent the aggregate particles embedded in a cementitious matrix, directional microcracking and a criteria for the transition from diffuse microcracking to localised macrocracking. By removing the macrocrack fracture strain component from the strain which drives microcrack growth, the effect of macrocrack development on microcrack growth in various other directions is included. Numerical simulations show that the model captures well the mechanical behaviour as well as key characteristics of the cracking mechanism in cementitious materials.
| Item Type: | Conference Proceedings |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Grassl, Dr Peter |
| Authors: | Mihai, I. C., Bains, A., and Grassl, P. |
| College/School: | College of Science and Engineering > School of Engineering College of Science and Engineering > School of Engineering > Infrastructure and Environment |
| ISBN: | 9781032327242 |
| Copyright Holders: | © 2022 Copyright the Author(s) |
| First Published: | First published in Computational Modelling of Concrete and Concrete Structures 2022 |
| Publisher Policy: | Reproduced under a Creative Commons license |
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