Textile reinforced concrete (TRC) composites are generally used to repair and/or reinforce civil engineering structures. In most cases, these reinforced structures are subjected to the weather conditions of the surrounding environment and issues such as thermal variation, humidity, and fire exposure. With consideration for these types of conditions, this study investigates the thermomechanical behaviour of TRC composites under various elevated temperatures from 20 °C to 800 °C and two water contents (i.e., ‘almost-dry’ and ‘saturated’). An analysis of these conditions will allow the effect of temperature to be quantified and combined with the presence of water in the pores of the TRC composites.

The experimental study is followed by an analytical model that aims to calibrate the existing Gibson model. Based on the obtained experimental results, the parameters of the analytical model that were adapted for cementitious matrix composites are identified and discussed. With a minimum number of experimental tests, the modified analytical model enabled the prediction of the thermomechanical properties of glass TRC as a function of its water content and temperature. Therefore, the proposed modified analytical model can be applied to the prediction of the thermomechanical properties of similar TRC composites.

纺织增强混凝土（TRC）复合材料通常用于修复和/或加固土木工程结构。在大多数情况下，这些增强结构会受到周围环境的天气条件的影响，并且会受到热变化，湿度和着火等问题的影响。考虑到这些条件，本研究研究了TRC复合材料在20°C至800°C的各种高温和两种含水量（即“几乎干燥”和“饱和”）下的热力学行为。对这些条件的分析将可以量化温度的影响，并与TRC复合材料孔中水的存在相结合。

实验研究之后是旨在校准现有吉布森模型的分析模型。根据获得的实验结果，确定并讨论了适用于水泥基复合材料的分析模型的参数。通过最少数量的实验测试，修改后的分析模型可以预测玻璃TRC的热机械性质，该热力学性质是其含水量和温度的函数。因此，所提出的改进的分析模型可以应用于相似的TRC复合材料的热机械性能的预测。