In recent years, the use of synthetic fiber-reinforced polymer (FRP) composites has gained significant popularity in structural engineering. The confinement concrete to improve its axial behavior been one most encountered applications such FRP materials. However, these materials are far from being friendly environment due their carbon release during production. Besides, high cost is still a maj...

In short-fiber reinforced polymers, fatigue damage is typically characterized by measuring the dynamic stiffness and its degradation under cyclic loading. Computational homogenization methods may be used to characterize behavior of composite via numerical predictions. Such an approach reduce experimental effort significantly. previous works, authors proposed elastic model for predicting relativ...

The coupled damage/plasticity model for meso-level which is ply-level in case of Uni-Directional (UD) Fiber Reinforced Polymers (FRPs) is implemented. The mathematical formulations, particularly the plasticity part, are discussed in a comprehensive manner. The plastic potential is defined in effective stress space and the damage evolution is based on the theory of irreversible thermodynamics. T...

Strength capacity of reinforced concrete columns is very important to resists and transmit the external loadings. For Architects engineerings requirements use small cross section or in case poor control quality we need increase compressive strength a strengthening technique structural elements such as column. In present paper, behavior four steel fiber self-compact by one layer CFRP that wrappe...

there is a worldwide interest in using fibers of different types in concrete mixtures. in this regard, as the use of pet fibers has gradually increased during the last decade, this study aims to investigate the effects of pet fibers on the mechanical properties of hardened concrete and the workability of fresh concrete. to this end, different contents of pet fibers (pc= %0, %0.5, %1 and %1.5) a...