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http://bura.brunel.ac.uk/handle/2438/31518
Title: | Meso-scale modelling of FRP-to-concrete bond interfaces |
Authors: | Li, Y Esmaeeli, E Sha, W Yang, Z Chen, J-F |
Keywords: | fiber reinforced polymer (FRP);concrete;bond behaviour;meso-scale modelling;Monte Carlo simulation |
Issue Date: | 22-May-2025 |
Publisher: | SAGE Publications |
Citation: | Li, Y. et al. (2025) 'Meso-scale modelling of FRP-to-concrete bond interfaces', Advances in Structural Engineering, 0 (ahead of print), pp. 1 - 20. doi: 10.1177/13694332251344663. |
Abstract: | The bond behaviour between fiber-reinforced polymer (FRP) and concrete plays a critical role in the performance of FRP-strengthened reinforced concrete (RC) structures. While extensive research has been conducted on debonding failures, existing studies predominantly treat concrete as homogeneous, neglecting its inherent heterogeneity. This paper proposes an effective meso-scale finite element (FE) model incorporating random aggregate distributions to explicitly account for the heterogeneous nature of concrete. As only the compressive strength of concrete is usually reported in bond tests, a set of equations are identified as a guideline for calculating the material properties of mortar and coarse aggregates, as required by the damage plasticity constitutive relations of materials which are employed to model both coarse aggregates and mortar. The proposed model is validated through simulations of uniaxial tensile and compressive tests of concrete and FRP-to-concrete bonded joint experiments. Results demonstrate that the model’s capability to predict the mesoscopic damage and fracture evolution, as well as the macroscopic load-displacement curves and failure patterns. A parametric study reveals that increasing the coarse aggregate fraction from 30% to 50% enhances bond strength and displacement by 7–8%. This meso-scale approach provides a robust tool for developing bond strength and bond-slip models, incorporating concrete’s meso-structural characteristics. |
URI: | https://bura.brunel.ac.uk/handle/2438/31518 |
DOI: | https://doi.org/10.1177/13694332251344663 |
ISSN: | 1369-4332 |
Other Identifiers: | ORCiD: Esmaeel Esmaeeli https://orcid.org/0000-0003-2332-8087 ORCiD: Zhenjun Yang https://orcid.org/0000-0002-9604-6200 ORCiD: Jian-Fei Chen https://orcid.org/0000-0002-0501-3797 |
Appears in Collections: | Dept of Civil and Environmental Engineering Research Papers |
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FullText.pdf | Copyright © The Author(s) 2025. Li Y, Esmaeeli E, Sha W, Yang Z, Chen J-F. Meso-scale modelling of FRP-to-concrete bond interfaces. Advances in Structural Engineering. 2025;0(0), pp. 1-20. DOI: 10.1177/13694332251344663. This is an accepted manuscript distributed under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. | 4.36 MB | Adobe PDF | View/Open |
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