What question did this study set out to answer?

To develop a realistic 3D computational framework that captures the complex mesostructure and fracture behavior of recycled aggregate concrete under compressive loading.

November 16, 2025Cement and Concrete CompositesOpen Access

A novel framework for realistic modelling of 3D mesostructure and fracture behaviour of recycled aggregate concrete

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Authors

YDYi DingChina University of Mining and Technology SNSadjad NaderiImperial College London GHG.H.M. van der HeijdenUniversity College London

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Implication

Computational modeling study demonstrates realistic fracture and crack initiation in recycled aggregate concrete, suggesting a viable tool for optimizing sustainable material design.

Key Points

To develop a realistic 3D computational framework that captures the complex mesostructure and fracture behavior of recycled aggregate concrete under compressive loading.
Generated 3D concrete mesostructures using Voronoi tessellation, hierarchical clustering, splining, and scaling techniques to control aggregate morphology.
Modeled six distinct structural phases: old aggregate, old mortar, new mortar, two interfacial transition zones (ITZs), and voids.
Simulated fracture initiation and progression under uniaxial compression to validate against experimental failure patterns.
Produced irregular recycled aggregate geometries matching experimental size distributions, volume fractions, old mortar contents, sphericity, roundness, and convexity.
Accurately simulated compressive failure, showing crack initiation localized at the old interfacial transition zones that progressed into shear-dominated failure.

Cite This Study

Ding et al. (2025) studied this question.

synapsesocial.com/papers/6a72f0db4aaee9d3921cf585 https://doi.org/10.1016/j.cemconcomp.2025.106396

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Implication

Computational modeling study demonstrates realistic fracture and crack initiation in recycled aggregate concrete, suggesting a viable tool for optimizing sustainable material design.

A novel framework for realistic modelling of 3D mesostructure and fracture behaviour of recycled aggregate concrete

Discussion

Member takes

Implication

Key Points

Cite This Study

A novel framework for realistic modelling of 3D mesostructure and fracture behaviour of recycled aggregate concrete

Discussion

Member takes

Implication

Key Points

Cite This Study

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