Dynamic compression failure mechanisms in homogeneous mortar and three-dimensional mesoscopic concrete: a comparative study using the split Hopkinson pressure bar

Lateral behavior of brittle shear-failure RC columns retrofitted with ECC jackets: effects of strain-hardening and axial load

This study presents a numerical investigation on the nonlinear behavior of brittle reinforced concrete (RC) columns retrofitted with engineered cementitious composite (ECC) jackets exhibiting varying levels of strain-hardening capacity. Constitutive relations based on the concrete damage plasticity model are employed f...

Constitutive modeling of concrete under tensile loading: damage evolution from 3D microcracks

Detailed micro-modelling of unreinforced masonry walls: a parametric in-plane cyclic study

Unreinforced masonry walls (UMWs) exhibit insufficient seismic capacity owing to their low tensile strength, rapid stiffness degradation, and brittle failure under cyclic in-plane loading. This study proposed a detailed micro-modelling approach to simulate the in-plane behaviour of UMWs. The finite element model was in...

Sensitivity Assessment of Macroscopic Mechanical Responses of Cemented Sand and Gravel to Mesoscopic Parameters Using an Improved MULTIMOORA Method

The macroscopic mechanical responses of cemented sand and gravel (CSG) are jointly affected by the mesoscopic properties of the aggregate, mortar matrix, and interfacial transition zone, while different parameters exhibit distinct magnitudes and directions of influence on strength, stiffness, and failure deformation. T...

An extended state-based intermediately homogenized peridynamic model for concrete failure analysis considering the ITZ porosity

The interfacial transition zone (ITZ) is inherently a porous region that significantly influences macroscopic mechanical and fracture behaviors of concrete materials. In this study, an extended state-based intermediately homogenized peridynamic model (IH-PD) is proposed for concrete failure analysis considering the ITZ...

Quasi-Static and Dynamic Interfacial Bond Performance Between Ultra-Early-Strength Unsaturated Polyester Polymer Concrete and Ordinary Portland Concrete Under Flexural Loadings

Unsaturated polyester polymer concrete (UPPC) is a promising rapid repair material for pavement engineering, while the age-dependent and rate-dependent bonding behaviors between UPPC and ordinary Portland concrete (OPC) substrate remains poorly understood, restricting its application in heavy-traffic scenarios. This st...