The carbon TRCs gave the strain-hardening behaviour with different phases depending on elevated temperature levels. For the numerical approach, the input data of the numerical models were chosen from the experimental results of TRC component materials (carbon textiles, cementitious matrix). Two reinforcement carbon textiles were manufactured industrially in the factory with different geometries and treatment products to improve the textile/matrix bond. This paper presents both experimental and mesoscale modeling results of the direct tensile behaviour of two carbon TRC composites at elevated temperatures ranging from 25 ☌ to 600 ☌. The main failure mode observed was in bending with the delamination of the textiles from the mortar or by the tensile failure of the textile. Simplified bi-linear stress-strain laws were assigned to the textile reinforcement. The bond between the textile and the cement matrix was modelled using bond-slip, with input based on pull-out tests from literature. Cracking of the cement matrix was modelled with a smeared rotating crack model. The numerical analysis primarily consisted of 2-D non-linear FE modelling of a thin TRC slab specimen. The finite element software DIANA with the pre- and postprocessor FX+ was used. The influence of varying the contact perimeter between the textile reinforcement mesh and the concrete matrix was also studied. One of the test configurations was modelled using non-linear finite element methods. Four-point bending tests were conducted on thin TRC specimens strengthened by carbon fibre textiles.

The purpose of this study is to investigate the structural behaviour of a thin TRC slab under bending stress. Investigations of new materials are necessary in order to quantify its expected structural performance and integrity.

TRC encompasses a fine-grained concrete matrix reinforced by multi-axial textile fabrics, which replaces the traditionally used reinforcement methods. One way of dealing with this need is by exploring the use of alternative building materials, such as Textile Reinforced Concrete (TRC). The design and building construction industry is in need of a paradigm shift.

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