## 2 Experimental Program
### Concrete Mixes  
In this research, a total of thirteen concrete mixes were made and used to prepare test specimens for compressive strength tests, pull-out tests, and flexure tests. Table 2 provides the details of these concrete mixes with respect to the type and content of fine and coarse aggregates used. The mix ratio of cement, fine aggregates, and coarse aggregates for all concrete mixes was kept the same at 1:2:3. For the designation of concrete mixes given in Table 2, F stands for fine aggregates and C stands for coarse aggregates. In brackets, the types of fine and coarse aggregates are given. For instance, the designation \"F(RBA) + C(RBA)\" shows a mix containing 100% fine RBAs and 100% coarse RBAs. In the designation of all concrete mixes in which coarse NAS along with coarse RCAs or RBAs are used, the percentage content of NAS and RAs is also provided. For instance, the designation \"F(RBA) + C(75 RBA + 25 NA)\" indicates a concrete mix made using 100% fine RBAs, 75% coarse RBAs, and 25% coarse NAs. Similarly, the designation \"F(RCA) + C(50 RCA + 50 NA)\" indicates a mix made using 100% fine RCAs, 50% coarse RCAs, and 50% coarse NAS. The details of the control mix are also provided in this table, which was prepared using 100% fine and coarse NAs.  
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Properties**} & \multirow{2}{*}{**Testing Standard**} & \multicolumn{6}{c}{**Aggregate Type**} \\ \cline{3-8}  & & \multicolumn{2}{c}{**RCA**} & \multicolumn{2}{c}{**RBA**} & \multicolumn{2}{c}{**NA**} \\ \cline{3-8}  & & **Coarse** & **Fine** & **Coarse** & **Fine** & **Coarse** & **Fine** \\ \hline Bulk oven dry-specific gravity & & 2.21 & 2.05 & 1.74 & 1.58 & 2.71 & 2.59 \\ Bulk SSD-specific gravity & ASTM C127 [58] and & 2.49 & 2.29 & 2.04 & 1.85 & 2.85 & 2.75 \\ Bulk Apparent-Specific Gravity & ASTM C128 [59] & 2.92 & 2.76 & 2.51 & 2.43 & 3.13 & 2.94 \\ Water Absorption (\%) & & 7.87 & 9.5 & 15.25 & 19.25 & 1.9 & 2.24 \\ Bulk Density (kg/m\({}^{3}\)) & ASTM C29 [60] & 1321 & 1426.3 & 1290 & 1378.3 & 1532.6 & 1654.6 \\ Crushing Value of Aggregate, & BS 812-110 [61] & 22.4 & - & 38.57 & - & 14.2 & - \\ Impact Value of Aggregate, & BS 812-112 [62] & 18.1 & - & 31.46 & - & 12.78 & - \\ AIV (\%) & & & & & & & \\ \hline \hline \end{tabular}
\end{table}
Table 1: Properties of aggregates.  
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Sr. No**} & \multirow{2}{*}{**Mix Designation**} & \multicolumn{4}{c}{**Fine Aggregates (\%)**} & \multicolumn{4}{c}{**Coarse Aggregates (\%)**} \\ \cline{3-8}  & & **RBAs** & **RCAs** & **NAs** & **RBAs** & **RCAs** & **NAs** \\ \hline
1 & F(RBA) + C(RBA) & & & & 100 & - & - \\
2 & F(RBA) + C(RCA) & 100 & - & - & - & 100 & - \\
3 & F(RBA) + C(NA) & & & & - & - & 100 \\
4 & F(RCA) + C(RBA) & & & & 100 & - & - \\
5 & F(RCA) + C(RCA) & - & 100 & - & - & 100 & - \\
6 & F(RCA) + C(NA) & & & & - & - & 100 \\
7 & F(RBA) + C(75 RBA + 25 NA) & & & & 75 & - & 25 \\
8 & F(RBA) + C(50 RBA + 50 NA) & 100 & - & - & 50 & - & 50 \\
9 & F(RBA) + C(25 RBA + 75 NA) & & & & 25 & - & 75 \\
10 & F(RCA) + C(75 RCA + 25 NA) & & & & - & 75 & 25 \\
11 & F(RCA) + C(50 RCA + 50 NA) & - & 100 & - & - & 50 & 50 \\
12 & F(RCA) + C(25 RCA + 75 NA) & & & & - & 25 & 75 \\
13 & CONT-F(NA) + C(NA) & - & - & 100 & - & - & 100 \\ \hline \hline \end{tabular}
\end{table}
Table 2: Concrete mixes.