## 4 Results and Discussion
### Compressive Strength of Brick Bonds  
In this study, compressive and flexural strength were determined by preparing five types of brick bonds with four cement mortar ratios. After application of the bond mechanism, its combinations were tested with changes in the mortar ratio. The results showed that the English bond was at a maximum (0.786 MPa) with a mortar ratio 1:3 and was at a minimum (0.492 MPa) with a mortar ratio of 1:8; the Flemish bond was at a maximum (0.538 MPa) with a mortar ratio of 1:3 and was at a minimum (0.507 MPa) with a mortar ratio of 1:8; the header bond was at a maximum (0.683 MPa) with a mortar ratio of 1:3 and was at a minimum (0.518 MPa) with a mortar ratio of 1:8; the Dutch bond was at a maximum (0.652 MPa) with a mortar ratio of 1:3 and was at a minimum (0.476 MPa) with a mortar ratio of 1:8; and the silver-lock bond was at a maximum (0.517 MPa) with a mortar ratio of 1:3 and was at a minimum (0.424 MPa) with a mortar ratio of 1:8. Overall, the English bond with a maximum of 0.786 MPa with a mortar ratio of 1:3 was the best combination. The results are shown in Table 6.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Brick Bond/Mortar Ratio**} & \multicolumn{4}{c}{**Compressive Strength (MPa)**} \\ \cline{2-5}  & **1:3** & **1:4** & **1:6** & **1:8** \\ \hline English bond & 0.786 & 0.599 & 0.517 & 0.492 \\ Flemish bond & 0.538 & 0.528 & 0.517 & 0.507 \\ Header bond & 0.683 & 0.528 & 0.523 & 0.518 \\ Dutch bond & 0.652 & 0.517 & 0.507 & 0.476 \\ Silver-lock bond & 0.517 & 0.471 & 0.445 & 0.424 \\ \hline \hline \end{tabular}
\end{table}
Table 6: Compression strength (MPa) of different brick masonry bonds.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Mortar Ratio** & \(P\) **(N)** & \(L\) **(mm)** & \(L_{1}\) **(mm)** & \(P_{1}\) **(N)** & \(F_{g}\) **(MPa)** \\ \hline
1:3 & 150.92 & 203 & 63.5 & 0.247 & 0.0685 \\
1:4 & 116.12 & 203 & 63.5 & 0.247 & 0.0618 \\
1:6 & 107.8 & 203 & 63.5 & 0.247 & 0.0489 \\
1:8 & 78.4 & 203 & 63.5 & 0.247 & 0.035 \\ \hline \hline \end{tabular}
\end{table}
Table 4: Brick masonry bond strength.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Ratio** & **Load (N)** & **Contact Area (mm2)** & **Bond Shear Strength (MPa)** \\ \hline
1:3 & 11,000 & 52,258 & 0.21 \\
1:4 & 900 & 52,258 & 0.17 \\
1:6 & 7500 & 52,258 & 0.14 \\
1:8 & 5000 & 52,258 & 0.095 \\ \hline \hline \end{tabular}
\end{table}
Table 5: Brick masonry triplet shear strength.  
The connection between the block and the mortar is crucial for composite conduct between the two materials. Advancement of the side pressure leads to pressure in the block and cement or the other way around, keeping in mind the presumption that there is no connection weakness at the interface. It is valuable to comprehend the relationship between the bonds and the compressive quality [46]. As demonstrated, the block utilized here with an English bond had a higher value of compressive strength (0.786 MPa) in comparison to any other bond. The brick would be triaxle pressure, while the mortar would be biaxial strain and pressure. The level-pressure brick was the aftereffect of stiffer mortar pulling internally at the similarity of the strain. The shear stress of the block mortar interface prompted flat pressure in the block. Because the association with the block mortar interface broke, the flat pressure-actuated shear push additionally vanished, and the block fizzled through horizontal strain. A contour graph shows the higher-strength area clearly. A block-wise comparative assessment can be seen in Figures 6 and 7.  
Figure 6: Compressive strength for the (**a**) English bond; (**b**) Flemish bond; (**c**) header bond; (**d**) Dutch bond; and (**e**) silver-lock bond.