Constitutive Numerical Model of FRCM Strips Under Traction

Alessia Monaco,Lidia La Mendola,Jennifer D’Anna,Giovanni Minafò,M. Concetta Oddo

doi:10.3389/fbuil.2020.00060

Alessia Monaco, Lidia La Mendola + Show 3 more

Open Access

https://doi.org/10.3389/fbuil.2020.00060

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Abstract

In this paper the tensile behavior of Fiber Reinforced Cementitious Matrix (FRCM) strips is investigated through Finite Element (FE) models. The most adopted numerical modeling approaches for the simulation of the fiber-matrix interface law are described. Among them, the cohesive model is then used for the generation of FE models which are able to simulate the response under traction of FRCM strips tested in laboratory whose results are available in the technical literature. Tests on basalt, PBO and carbon coated FRCM specimens are taken into account also considering different mechanical ratios of the textile reinforcement. The comparison between FE results and experimental data allows validating the adopted numerical modelling approach. Finally, some considerations are provided on the effects of the fiber fabric mechanical ratio and the strength and stiffness of the interface on the tensile capacity of the FRCM strip.

Highlights

In the last decades, the scientific interest in the rehabilitation of existing structures has increasingly involved the use of innovative materials and techniques
The cohesive model is used for the generation of Finite Element (FE) models which are able to simulate the response under traction of Fiber Reinforced Cementitious Matrix (FRCM) strips tested in laboratory, which results are available in the technical literature
Some considerations are provided on the effects of the fiber fabric mechanical ratio and the strength and stiffness of the interface on the tensile capacity of the FRCM strip

Summary

Introduction

The scientific interest in the rehabilitation of existing structures has increasingly involved the use of innovative materials and techniques. PBO and carbon coated FRCM specimens are taken into account considering different mechanical ratios of the textile reinforcement. Some considerations are provided on the effects of the fiber fabric mechanical ratio and the strength and stiffness of the interface on the tensile capacity of the FRCM strip.

Results

Conclusion