# Shear Performance for Prestressed Concrete Hollow Core Slabs
## 4 Experimental Results and Discussion
### Shear Force-Deflection Relationship
\begin{table}
\begin{tabular}{c c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Specimens**} & \multirow{2}{*}{\
\begin{tabular}{c} \(f_{c}\) \\ **(MPa)** \\ \end{tabular} } & \multirow{2}{*}{
\begin{tabular}{c} **H** \\ **(mm)** \\ \end{tabular} } & \multicolumn{4}{c}{**Experimental Results**} & \multicolumn{4}{c}{**Analytical Results**} & \multicolumn{2}{c}{**Exp.**} \\  & & & **(mm)** & & & & **(KCI 2017\&ACCI 318-19)** & **/Ana.** \\ \cline{5-10}  & & & **V\_Crack** & \(\delta_{\text{Crack}}\) & \(V_{\text{Preak}}\) & \(\delta_{\text{Proak}}\) & \(V_{\text{c}i}\) & \(V_{\text{c}iw}\) & \(V_{\text{n}}\) & \\ \hline \multirow{3}{*}{S265} & 1 & & & 204.0 & 1.63 & 313.3 & 7.30 & & & & 1.47 \\  & 2 & \(f^{{}^{\prime}}\)\({}_{c\text{HCS}}\) = 48.7 & - & 235.1 & 1.72 & 316.0 & 9.10 & 276.1 & 212.7 & 212.7 & 1.49 \\  & 3 & & 170.6 & 1.39 & 295.1 & 3.81 & & & & 1.39 \\ \hline \multirow{3}{*}{S320} & & Mean & & 203.2 & 1.58 & 308.1 & 6.74 & - & - & - & 1.45 \\  & 1 & & 322.9 & 1.86 & 413.5 & 9.85 & & & & 1.61 \\  & 2 & \(f^{{}^{\prime}}\)\({}_{c\text{HCS}}\) = 48.3 & - & 317.3 & 1.77 & 440.1 & 11.45 & 386.7 & 257.6 & 257.6 & 1.71 \\  & 3 & & 328.5 & 2.02 & 448.8 & 15.44 & & & & 1.74 \\ \hline \multirow{3}{*}{S400} & & Mean & & 322.9 & 1.88 & 434.1 & 12.25 & - & - & - & 1.69 \\  & 1 & & 230.9 & 1.71 & 414.6 & 4.75 & & & & 1.18 \\  & 3 & \(f^{{}^{\prime}}\)\({}_{c\text{HCS}}\) = 48.2 & - & 213.7 & 1.39 & 386.2 & 11.96 & 447.7 & 352.3 & 352.3 & 1.10 \\  & 2 & & 248.6 & 1.68 & 409.4 & 16.77 & & & & 1.16 \\ \hline \multirow{3}{*}{CS265} & & Mean & & 231.1 & 1.59 & 403.4 & 11.16 & - & - & - & 1.14 \\  & 1 & \(f^{{}^{\prime}}\)\({}_{c\text{HCS}}\) = 48.7 & 87.0 & 361.7 & 1.54 & 464.2 & 7.41 & 410.3 & 261.1 & 261.1 & 1.78 \\  & 2 & & 86.5 & 355.2 & 1.46 & 499.0 & 7.90 & 408.9 & 260.7 & 260.7 & 1.91 \\  & 3 & \(f^{{}^{\prime}}\)\({}_{c\text{,}}\)\({}_{T}\) = 28.1 & 84.7 & 353.6 & 1.49 & 482.2 & 8.34 & 404.0 & 259.2 & 259.2 & 1.86 \\ \hline \multirow{3}{*}{S320} & & Mean & & 356.8 & 1.50 & 481.8 & 7.88 & 407.7 & 260.3 & 260.3 & 1.85 \\  & 1 & \(f^{{}^{\prime}}\)\({}_{c\text{,}}\)\({}_{T}\) = 48.3 & 126.7 & 502.8 & 1.98 & 726.3 & 19.33 & 614.5 & 326.4 & 326.4 & 2.23 \\  & 2 & \(f^{{}^{\prime}}\)\({}_{c\text{,}}\)\({}_{T}\) = 27.0 & 116.3 & 497.2 & 2.43 & 623.1 & 13.01 & 581.7 & 318.3 & 318.3 & 1.96 \\  & 3 & \(f^{{}^{\prime}}\)\({}_{c\text{,}}\)\({}_{T}\) = 27.0 & 114.5 & 473.5 & 2.11 & 744.3 & 19.49 & 576.4 & 316.9 & 316.9 & 2.35 \\ \hline \multirow{3}{*}{CS400} & & Mean & & 491.2 & 2.17 & 697.9 & 17.28 & 590.9 & 320.5 & 320.5 & 2.18 \\  & 1 & & 113.0 & 494.9 & 2.17 & 815.5 & 21.51 & 639.1 & 411.7 & 411.7 & 1.98 \\ \cline{1-1}  & 3 & \(f^{{}^{\prime}}\)\({}_{c\text{,}}\)\({}_{T}\) = 48.2 & 113.0 & 494.9 & 2.17 & 815.5 & 21.51 & 639.1 & 411.7 & 411.7 & 1.98 \\ \cline{1-1}  & 3 & \(f^{{}^{\prime}}\)\({}_{c\text{,}}\)\({}_{T}\) = 48.2 & 118.2 & 512.3 & 2.43 & 613.8 & 6.08 & 651.6 & 416.1 & 416.1 & 1.48 \\ \cline{1-1}  & 2 & \(f^{{}^{\prime}}\)\({}_{c\text{,}}\)\({}_{T}\) = 27.0 & 113.0 & 458.8 & 1.85 & 718.4 & 13.58 & 639.1 & 411.7 & 411.7 & 1.74 \\ \hline \multirow{3}{*}{\(V_{\text{Crack}}\)—shear force of at cracking; \(\delta_{\text{Crack}}\)—deflection of at cracking; \(V_{\text{Peak}}\)—shear force of at peak; \(\delta_{\text{Peak}}\)—deflection of at peak; \(V_{\text{c}i}\)—flexural-shear strength; \(V_{\text{c}i}\)—web-shear strength.} \\ \cline{1-1} \cline{2-10}  & & Mean & & 488.7 & 2.15 & 715.9 & 13.72 & 643.2 & 413.2 & 413.2 & 1.73 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Comparison between analytical and experimental results.