## 3 Results and Discussion
### Mechanical Behaviour  
The mechanical behaviour of the mortars was analysed through their deformability and mechanical strengths. The deformability of the mortars was evaluated through the modulus of elasticity test and the results are presented in Table 3.  
Figure 2: Drying curves (loss of water per square root of time) at 28 days (**a**) and 365 days (**b**). \begin{table}
\begin{tabular}{l l l l l l l l l} \hline \hline
**TEST** & **Days** & \multicolumn{2}{c}{**MORTARS**} & \multicolumn{2}{c}{**SWP**} & \multicolumn{2}{c}{**FRA**} & \multicolumn{2}{c}{**SWP+FRA**} & \multicolumn{2}{c}{**SWP+FRA**} & \multicolumn{2}{c}{**SWP+FRA**} & \multicolumn{2}{c}{**SWP+FRA**} \\ \hline  & 28 & \(102\pm 0.7\) & \(82\pm 0.4\) & \(186\pm 0.3\) & \(8.1\pm 0.5\) & \(5.8\pm 0.4\) & \(144\pm 0.2\) & \(124\pm 0.4\) \\ \cline{2-7}
**Modulus of elasticity (GPa)** & 90 & \(8.0\pm 0.3\) & \(8.1\pm 0.2\) & \(17.3\pm 0.3\) & \(7.4\pm 0.4\) & \(4.9\pm 0.7\) & \(126\pm 0.2\) & \(10.0\pm 0.4\) \\ \cline{2-7}
**Modulus of elasticity (GPa)** & 180 & \(8.7\pm 0.9\) & - & - & \(5.7\pm 0.5\) & \(4.6\pm 0.1\) & \(121\pm 0.6\) & \(8.9\pm 0.3\) \\ \cline{2-7}
**T-55** & 97 & \(\pm 0.3\) & - & - & \(6.6\pm 0.2\) & \(5.2\pm 0.4\) & \(11.8\pm 0.4\) & \(9.4\pm 0.2\) \\ \hline  & 28 & \(210\pm 0.32\) & \(1.41\pm 0.10\) & \(4.39\pm 0.24\) & \(1.37\pm 0.14\) & \(1.10\pm 0.11\) & \(2.62\pm 0.05\) & \(2.71\pm 0.17\) \\ \hline  & 90 & \(1.54\pm 0.19\) & \(1.83\pm 0.19\) & \(2.27\pm 0.27\) & \(1.49\pm 0.19\) & \(1.59\pm 0.25\) & \(2.65\pm 0.37\) & \(3.01\pm 0.28\) \\ \cline{2-7}
**Flexural strength (MPa)** & 180 & \(1.79\pm 0.16\) & - & - & \(1.35\pm 0.16\) & \(0.96\pm 0.15\) & \(2.72\pm 0.34\) & \(3.00\pm 0.68\) \\ \cline{2-7}  & 365 & \(1.94\pm 0.17\) & - & - & \(1.38\pm 0.14\) & \(1.27\pm 0.13\) & \(2.83\pm 0.29\) & \(2.85\pm 0.11\) \\ \hline  & 28 & \(5.19\pm 0.45\) & \(5.85\pm 0.49\) & \(1.492\pm 0.29\) & \(4.30\pm 0.52\) & \(3.37\pm 0.19\) & \(9.42\pm 0.58\) & \(9.21\pm 0.33\) \\ \hline  & 90 & \(3.58\pm 0.22\) & \(3.90\pm 0.43\) & \(9.55\pm 0.49\) & \(3.82\pm 0.38\) & \(3.53\pm 0.39\) & \(10.38\pm 0.71\) & \(9.47\pm 0.57\) \\ \cline{2-7}
**Compressive strength (MPa)** & 120 & - & \(3.47\pm 0.19\) & \(7.77\pm 0.29\) & - & - & - & - \\ \cline{2-7}
**180** & 396 & \(0.42\) & - & - & \(2.92\pm 0.41\) & \(3.05\pm 0.19\) & \(9.69\pm 0.95\) & \(7.92\pm 0.42\) \\ \cline{2-7}
**T-55** & 5.86 & \(\pm\) 0.58 & - & - & \(2.87\pm 0.51\) & \(2.86\pm 0.07\) & \(8.21\pm 0.37\) & \(8.53\pm 0.24\) \\ \hline
**Reference** & - & [5] & [6] & [4] & - & - & - & - \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Modulus of elasticity, flexural strength and compressive strength test results. It was noticed that the SWF+FBA presented a low modulus of elasticity (around 5 GPa), which was expected, and is in accordance with the results of water absorption and open porosity tests. Contrarily, the SWP+FBA mortar presented a modulus of elasticity between 12 and 14 GPa, which is an intermediate value between the SWP (around 17-19 GPa) and the FBA mortars (around 6-8 GPa). FBA was able to reduce the modulus of elasticity of the SWP mortar (in SWP+BBA), but it is still too high when compared with the one of REF (around 8-10 GPa). Concerning the SWF+SWP+FBA mortar, its modulus of elasticity was higher than REF's until 90 days. For later ages, it decreased and became similar to or less than REF's. The decrease of modulus of elasticity over time could have indicated internal micro-cracking of the specimens. This micro-cracking was also noticed in the SWP mortar [6]. The flexural and compressive strength tests results are presented in Table 3 and Figures 3 and 4. They are in accordance with those of the modulus of elasticity. SWF+FBA presented strengths lower than REF's. SWP+FBA, on the contrary, was noticed to be stronger than the REF mortar, as well as SWF+SWP+FBA. The ternary mix mortar (SWF+SWP+FBA) presented a flexural strength between 2.7 and 3.0 MPa, between 28 and 365 days. The REF mortar presented, on the other hand, flexural strength between 1.5 and 2.1 MPa, at the same ages.