Numerical model of tensile behavior of textile reinforced concrete (TRC) based on stress field analysis

Abstract

Textile reinforced concretes (TRCs) are cementitious composites featuring excellent tensile strength and strain capacity. While previous studies have discussed the relationship between TRC tensile performance and textile/matrix interaction, the detailed mechanism has yet to be comprehensively investigated. In this study, a numerical model to simulate the overall stress–strain relation of TRC is developed. The model takes into account interfacial friction, chemical bond, and weft yarns’ anchorage effect to derive the stress transferred from textiles to matrix at various distances from a crack. Additionally, non-uniform matrix strength from X-ray CT-derived flaw structure is compared with the matrix stress field to determine new crack locations, while inconsistent yarn strength is incorporated for textile fracture description. The model provides a prediction tool for TRC’s mechanical behavior, and the stress–strain relation aligns with experimental results. Overall, the findings from this model can facilitate the design of TRCs with high performance for various applications.