# Additive Manufacturing as an Alternative to Core Sampling in Concrete Strength Assessment
## 2 Materials and Methods
### Physical and Mechanical Testing of Core Samples Extracted from Printed Structures
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Mix No.** & **Age, Days** & **O\_avg, mm** & **h\_avg, mm** & **Failure Load, kgf** & **Strength, kgf/cm\({}^{2}\)** & **Converted Strength, kgf/cm\({}^{2}\)** & **Average Strength, kgf/cm\({}^{2}\)** \\ \hline \multirow{8}{*}{ix 2: C:P = 150} & & 28.00 & 31.40 & 585.58 & 95.15 & 76.12 & \multirow{8}{*}{73.46} \\ \cline{3-8}  & \multirow{2}{*}{7 days} & 28.00 & 31.60 & 587.00 & 95.38 & 76.30 & \\ \cline{3-8}  & & 28.10 & 30.80 & 513.33 & 82.82 & 66.25 & \\ \cline{3-8}  & & 28.00 & 31.00 & 578.17 & 93.94 & 75.16 & \\ \cline{3-8}  & \multirow{2}{*}{14 days} & 28.05 & 29.53 & 895.98 & 145.07 & 116.05 & \multirow{2}{*}{111.65} \\ \cline{3-8}  & & 28.03 & 28.08 & 875.15 & 141.89 & 113.52 & \\ \cline{3-8}  & & 28.00 & 29.55 & 844.41 & 137.20 & 109.76 & \\ \cline{3-8}  & & 28.10 & 28.28 & 831.24 & 134.10 & 107.28 & \\ \cline{3-8}  & \multirow{2}{*}{28 days} & 28.00 & 29.65 & 1027.15 & 167.00 & 139.00 & \multirow{2}{*}{137.75} \\ \cline{3-8}  & & 28.03 & 31.33 & 1071.17 & 174.00 & 145.00 & \\ \cline{3-8}  & & 28.10 & 32.13 & 1012.48 & 163.00 & 136.00 & \\ \cline{3-8}  & & 28.08 & 31.59 & 973.35 & 157.00 & 131.00 & \\ \hline \multirow{8}{*}{Mix 3: (C+TMF):P = 150} & & 28.00 & 30.40 & 582.13 & 94.59 & 75.67 & \multirow{8}{*}{76.66} \\ \cline{3-8}  & \multirow{2}{*}{7 days} & 28.00 & 30.90 & 602.87 & 97.96 & 78.37 & \\ \cline{3-8}  & & 28.10 & 30.90 & 591.29 & 95.39 & 76.31 & \\ \cline{3-8}  & & 28.00 & 31.20 & 586.92 & 95.37 & 76.29 & \\ \cline{3-8}  & & 28.03 & 28.30 & 921.58 & 149.42 & 119.54 & \\ \cline{3-8}  & \multirow{2}{*}{14 days} & 28.03 & 31.48 & 867.16 & 140.60 & 112.48 & \multirow{2}{*}{118.28} \\ \cline{3-8}  & & 28.05 & 33.83 & 901.52 & 145.96 & 116.77 & \\ \cline{3-8}  & & 28.00 & 30.55 & 956.55 & 155.43 & 124.34 & \\ \cline{3-8}  & & 28.08 & 30.90 & 1056.50 & 171.00 & 142.00 & \\ \cline{3-8}  & \multirow{2}{*}{28 days} & 28.05 & 30.42 & 1061.39 & 172.00 & 143.00 & \multirow{2}{*}{145.25} \\ \cline{3-8}  & & 28.10 & 30.49 & 1080.96 & 174.00 & 145.00 & \\ \cline{3-8}  & & 28.03 & 31.08 & 1120.08 & 182.00 & 151.00 & \\ \hline \multirow{8}{*}{Mix 4: C(P+TMF) = 150} & & 28.00 & 30.80 & 568.65 & 92.40 & 73.92 & \multirow{8}{*}{72.94} \\ \cline{3-8}  & \multirow{2}{*}{7 days} & 28.00 & 31.10 & 575.09 & 93.44 & 74.75 & \\ \cline{3-8}  & & 28.10 & 34.60 & 545.80 & 88.05 & 70.44 & \\ \cline{3-8}  & & 28.00 & 31.00 & 558.70 & 90.78 & 72.62 & \\ \cline{3-8}  & & 28.13 & 33.30 & 900.25 & 144.93 & 115.94 & \\ \cline{3-8}  & & 28.03 & 31.40 & 827.20 & 134.12 & 107.30 & \\ \cline{3-8}  & & 28.08 & 30.25 & 832.17 & 134.45 & 107.56 & \\ \cline{3-8}  & & 28.13 & 33.90 & 831.24 & 133.82 & 107.06 & \\ \cline{3-8}  & & 28.03 & 31.44 & 1032.04 & 167.00 & 139.00 & \\ \cline{3-8}  & & 28.00 & 31.29 & 1012.48 & 165.00 & 137.00 & \\ \cline{3-8}  & & 28.20 & 31.02 & 997.80 & 160.00 & 133.00 & \\ \cline{3-8}  & & 28.08 & 30.66 & 973.35 & 157.00 & 131.00 & \\ \hline \multirow{8}{*}{Mix 5: (C+TMF):P = 150} & & 28.00 & 33.80 & 676.35 & 109.90 & 87.92 & \multirow{8}{*}{82.24} \\ \cline{3-8}  & & 28.00 & 31.10 & 619.81 & 100.71 & 80.57 & \\ \cline{3-8}  & & 28.10 & 32.20 & 631.41 & 101.87 & 81.49 & \\ \cline{3-8}  & & 28.00 & 31.10 & 607.69 & 98.74 & 78.99 & \\ \cline{3-8}  & & 28.18 & 31.03 & 1015.45 & 162.90 & 130.32 & \\ \cline{3-8}  & & 28.00 & 29.83 & 959.07 & 155.83 & 124.67 & \\ \cline{3-8}  & & 28.00 & 28.43 & 962.70 & 156.43 & 125.14 & \\ \cline{3-8}  & & 28.08 & 33.83 & 964.91 & 155.89 & 124.71 & \\ \cline{3-8}  & & 28.05 & 30.77 & 1164.11 & 188.00 & 157.00 & \\ \cline{3-8}  & & 28.00 & 31.09 & 1173.89 & 191.00 & 159.00 & \\ \cline{3-8}  & & 28.00 & 31.18 & 1154.32 & 188.00 & 156.00 & \\ \cline{3-8}  & & 28.10 & 31.17 & 1129.87 & 182.00 & 152.00 & \\ \hline \hline \end{tabular}
\end{table} 
Table 9: _Cont._