# Thermomechanical Behavior of Textile Reinforced Cementitious Composites Subjected to Fire
## Materials and Methods
### Specimens  
In total, six series of specimens were casted. Each series (consisting of six identical specimens) was made in order to investigate the influence of a different parameter. The parameters that were investigated are the following:  
* Thickness of the concrete cover
* Time/temperature of exposure to fire
* Material of fibers
* Moisture content  
The specimens were exposed to fire from only one side (referred to as \"face 2\"). The same side (face 2) was the one that was subjected to tension during the bending tests. Each one of the series was casted as a plate of TRC of dimensions 500 mm \(\times\) 435 mm (and a varying thickness according to the design of each case). After being cured at 20 \({}^{\circ}\)C and in a wet environment \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multirow{2}{*}{**Type of Textile**} & \multicolumn{2}{c}{**Roving**} & \multicolumn{2}{c}{**Weight before**} & \multicolumn{2}{c}{**Nominal**} & \multicolumn{2}{c}{**Yam Failure**} & \multicolumn{2}{c}{**Yam Stiffness**} \\  & **Distance (mm)** & **Finishing (g/m\({}^{2}\))** & **Thickness (mm)** & **Stress (MPa)** & **(GPa)** \\ \hline  & **warp** & **weft** & **warp** & **weft** & **warp** & **weft** & & \\ \hline Two-dimensional (2D) glass & 12 & 12 & 284 & 284 & 0.106 & 0.106 & 526 & 67 \\ \hline Three-dimensional (3D) glass & Face 1 & 10 & 10 & 229.3 & 229.3 & 0.171 & 0.171 & 496 & 67 \\ styrene-butadiene (SBR) coated & Face 2 & 18 & 9 & 229.3 & 229.3 & 0.171 & 0.171 & & \\ \hline
2D carbon SBR coated & 12.7 & 12.7 & 258 & 258 & 0.143 & 0.143 & 814 & 93 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Geometrical and mechanical data of the reinforcing textiles. Figure 1: (a) 2D styrene-butadiene (SBR) coated glass-fiber textile; (b) 3D SBR coated glass-fiber textile; (c) SBR coated carbon-fiber textile. for 28 days, each plate was cut into six identical specimens of dimensions 500 mm \(\times\) 70 mm, three of which were tested in bending without being subjected to a fire test, while the other three were tested in bending after being exposed to fire (the set-up of the fire tests is described in the next paragraph). In all cases, at least six yarns were present over the width of 70 mm, while these dimensions comply with the dimensional norm for testing TRC in tension, as per [30]. The differences between the geometry, the reinforcement and the duration of the fire test are provided in Figure 2.  
It is also noted that all the specimens were dried in a furnace before being subjected to the fire test. The drying process consisted of successive heating (up to 104 \({}^{\circ}\)C) and weighting of the specimens until the weight was constant. This corresponds to 0% of moisture content. Series D was the exception to this, as it was first submerged in water until it was saturated with water (also defined after successive weighting until constant weight), which corresponds to 100% of moisture content. Eventually, specimens in Series D were dried in the same oven and by the same process, until the moisture content reached 50%. The most important geometrical data for all the specimen Series are summarized in Table 2.  
Figure 2: Cross sectional geometry of specimen Series A to F.