## 2 Test Samples and Experimental Methods Description
### Specimens Preparation  
The test samples were prepared by substituting sand with different RWG volume percentages varying from 0% to 50%. Reference concrete (RC) was prepared first by mixing cement, sand, gravel, water, and superplasticiser. Next, the concrete-based composite was obtained by replacing the sand with RWG. Five composites, labeled as RC, CRWG10, CRWG20, CRWG30, and CRWG50, were manufactured. The water-cement and superplasticizer-cement mass ratios were modified in this work for each mixture operation so as to obtain a slump value of 50 mm. The mass of each constituent in 1 m\({}^{3}\) of each studied composite is given in Table 3.  
Samples preparation consists in mixing all the dry constituents of concrete for 5 min in cement mixer (Figure 3a). Subsequently, water and adjuvant were progressively added until a desired slump value by Abrams cone according to NF P 18-451 was obtaining [41] (Figure 3b,c). Then, the mixture was immediately poured in molds (Figure 3d).  
Figure 1: Waste recycled glass: (**a**) waste glass, (**b**) RWG particles with different colors, (**c**,**d**) size of the RWG particle.  
\begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline
**\%** & **SiO\({}_{2}\)** & **Al\({}_{2}\)O\({}_{3}\)** & **Fe\({}_{2}\)O\({}_{3}\)** & **CaO** & **MgO** & **K\({}_{2}\)O** & **MnO** & **TiO\({}_{2}\)** & **P\({}_{2}\)O\({}_{5}\)** & **Na\({}_{2}\)O** & **Cr\({}_{2}\)O** \\ \hline
**RWG** & 50–70 & 5–25 & \(<\)1 & 5–25 & 1–5 & 1–5 & \(<\)0.5 & \(<\)0.5 & \(<\)0.5 & 5–25 & \(<\)0.5 \\
**Sand** & 68.51 & 13.55 & 2.83 & 1.62 & 2.64 & 3.95 & - & 0.7 & 0.16 & 2.72 & - \\ \hline \end{tabular}
\end{table}
Table 1: Chemical components of sand and RWG determined by XRF elemental analysis.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**\multicolumn{3}{c}{**Materials (kg)**} \\ \cline{2-5}
**Composite** & **RWG** & **Gravel** & **Sand** & **Cement** & **Water (kg)** & **Superplasticizer (kg)** \\ \hline
**RC** & - & 995.56 & 797.10 & 400 & 180 & 6.80 \\
**CRWG10** & 74.35 & 995.56 & 717.39 & 400 & 172 & 6.08 \\
**CRWG20** & 148.71 & 995.56 & 637.68 & 400 & 162.79 & 5.04 \\
**CRWG30** & 223.06 & 995.56 & 575.97 & 400 & 161.66 & 5.96 \\
**CRWG50** & 371.78 & 995.56 & 398.55 & 400 & 172.72 & 6.4 \\ \hline \hline \end{tabular}
\end{table}
Table 3: Mass of each constituent in 1 m\({}^{3}\) of each formulation of concrete reinforced with RWG.  
Figure 2: Granulometric analysis of sand, gravel, and recycled waste glass.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**\multicolumn{3}{c}{**Nature**} & **Gravel** & **Sand** & **RWG** \\ \hline Flakiness coefficient FC & 13 & - & - \\ Superficial cleanness SC (\(\%\)) & 0.7 & - & - \\ Los Angeles abrasion test LA (\(\%\)) & 21 & - & - \\ Fineness modulus & - & 2.62 & - \\ Equivalent of sand ES & - & 75 & - \\ Specific weight (T.m\({}^{-3}\)) & 2.63 & 2.68 & 2.5 \\ Water absorption (\(\%\)) & 0.5 & 2.5 & 0 \\ Bulk density (kg.m\({}^{-3}\)) & 1455 & 1500 & 1300 \\ \hline \hline \end{tabular}
\end{table}
Table 2: Physical properties of different used aggregates.  
The compression and flexion samples are respectively cubic with dimensions of 10 \(\times\) 10 \(\times\) 10 cm\({}^{3}\) and prismatic with dimensions of 10 \(\times\) 10 \(\times\) 40 cm\({}^{3}\) (Figure 3e). All specimens were kept in the mold for 24 h at 20 \(\pm\) 2 \({}^{\circ}\)C, according to NFP18-404 [42]. Afterwards, they cured for a period of 27 days in fresh water at 20 \({}^{\circ}\)C. Some of these samples were kept in the environment for more 62 days, as shown in Figure 3f.