Abstract
Textile Reinforced Cement composites (TRCs) have become a key research topic when it comes to lightweight alternative construction materials for traditional concrete industry. While most of the research performed on TRCs combines a cementitious matrix material with 2D textile fabrics, this paper investigates the mechanical behaviour of TRCs reinforced with 3D textile fabrics. The main goal is to investigate the influence of the transversal fibre that is connecting the fibre layers and is typical for 3D textiles, on the tensile and flexural properties of the TRC. Therefore two textile fabric architectures were compared, firstly an unaltered 3D textile fabric and secondly a tensile-equivalent 2D textile fabrics with equal in-plane textile reinforcement. An experimental campaign in tension and bending was performed on four different TRC layups. When comparing the bending behaviour of the unaltered 3D-TRCs with the 2D alternatives, an increase in stiffness in the post-cracking stage was observed, while no influence was observed in tension. The experimental results were also compared with numerical predictions of the 2D-TRCs to put in evidence the influence of the 3D architecture.
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