Influence of Cohesive Interface on the Flexural Behavior of Textile-Reinforced Concrete

Textile-reinforced concrete (TRC), which is known as a combination of textiles or fibers embedded in fine-grained concrete and concrete, is a form of reinforced concrete. Recently, TRC is becoming more and more interesting because of many advantages, such as good mechanical properties, durability to external agents and performance at failure. In addition, the TRC applications in structures results in lightweight, high speed of execution, flexibility and durability. Besides, the combination of TRC and high-performance concrete (HPC) can improve significantly the flexural behavior of this composite structure. The cohesive interface between fine-grained concrete and concrete is one of the key factors affecting the flexural behavior of the material. In this study, numerical simulations of three-point bending tests were carried out at different rigidities of the interface to examine the flexural performance. The results show that the flexural behavior of TRC depends strongly on the strength of textile layer. In addition, the contact between two layers of materials should be increased to avoid premature failure such as fiber slip or premature detachment. Furthermore, good bonding enhances the flexural strength, thus enhances the properties of the reinforcing material.