Table 4 Strength calculation of all shear bond tests according to different failure modes
Failure mode | Specimen | Peak load (N) | Half peak load (N) | Section area | Strength (MPa) |
|---|---|---|---|---|---|
Brittle failure of the matrix | A1-1 | 4570.01 | 2285.00 | 56.8 mm × 110 mm | 0.37 |
A1-2 | 4786.65 | 2393.32 | 0.38 | ||
A1-3 | 4837.04 | 2418.52 | 0.39 | ||
Avg | 4731.23 | 2365.61 | 0.38 | ||
Shear bond failure | A2-1 | 10,278.66 | 5139.33 | 56.8 mm × 110 mm | 0.82 |
A2-2 | 6785.30 | 3392.65 | 0.54 | ||
A2-3 | 8869.21 | 4434.61 | 0.71 | ||
Avg | 8644.39 | 4322.20 | 0.69 | ||
A4-1 | 4123.15 | 2061.57 | 56.8 mm × 110 mm | 0.33 | |
A4-2 | 2998.88 | 1499.44 | 0.24 | ||
A4-3 | 1756.34 | 878.17 | 0.14 | ||
Avg | 2959.46 | 1479.73 | 0.24 | ||
Tensile failure of XPS | A3-1 | 713.28 | 356.64 | 56.8 mm × 20 mm | 0.31 |
A3-2* | 491.22 | 245.61 | 0.22 | ||
A3-3 | – | – | – | ||
B3-1 | 719.87 | 359.94 | 0.32 | ||
B3-2 | 825.49 | 412.75 | 0.36 | ||
B3-3 | 802.26 | 401.13 | 0.35 | ||
Avg | 765.23 | 382.61 | 0.34 | ||
Tensile failure of fabric | B1-1 | 6958.09 | 3479.05 | 4 × 2 mm2 | 434.88 |
B1-2 | 7635.88 | 3817.94 | 477.24 | ||
B1-3 | 7474.90 | 3737.45 | 467.18 | ||
Avg | 7356.29 | 3678.15 | 459.77 | ||
B2-1 | 14,827.73 | 7413.86 | 8 × 2 mm2 | 463.37 | |
B2-2 | 15,117.86 | 7558.93 | 472.43 | ||
B2-3 | 13,711.93 | 6855.96 | 428.50 | ||
Avg | 14,552.51 | 7276.25 | 454.77 | ||
B4-1 | 7571.36 | 3785.68 | 4 × 2 mm2 | 473.21 | |
B4-2 | 7650.38 | 3825.19 | 478.15 | ||
B4-3 | 7707.60 | 3853.80 | 481.72 | ||
Avg | 7643.11 | 3821.56 | 477.69 | ||
Peel bond failure | A5-1 | 231.40 | 115.70 | 56.8 mm × 110 mm | 0.02 |
A5-2 | 1663.16 | 831.58 | 0.13 | ||
A5-3 | 307.08 | 153.54 | 0.02 | ||
Avg | 733.88 | 366.94 | 0.06 | ||
B5-1 | 1128.62 | 564.31 | 56.8 mm × 220 mm | 0.05 | |
B5-2 | 2340.80 | 1170.40 | 0.09 | ||
B5-3 | 3054.00 | 1527.00 | 0.12 | ||
Avg | 2174.48 | 1087.24 | 0.09 |