Research Article
Predicting the Remaining Service Life of Civil Airport Runway considering Reliability and Damage Accumulation
Table 4
Tensile strength test results of the cement concrete core samples of runway pavement.
| Core sample no. | Test piece diameter (mm)/height (mm) | Failure load (kN) | Splitting strength (MPa) | Flexural strength (MPa) | Flexural elastic modulus (MPa) |
| 1# | 147.5/203 | 139.807 | 2.97 | 4.82 | 34342.65 | 2# | 147.5/198 | 161.641 | 3.52 | 5.59 | 37922.91 | 3# | 147.5/199 | 197.105 | 4.27 | 6.62 | 42192.64 | 4# | 147.5/201 | 175.513 | 3.77 | 5.93 | 39387.19 | 5# | 147/301 | 211.352 | 3.04 | 4.92 | 34811.10 | 6# | 147.5/299 | 279.592 | 4.04 | 6.3 | 40901.97 | 7# | 147.5/302 | 202.168 | 2.89 | 4.71 | 33763.08 | 8# | 147/301 | 285.587 | 4.11 | 6.4 | 41302.77 | 9# | 146.5/299 | 201.403 | 2.93 | 4.76 | 34027.75 | 10# | 147/300 | 262.883 | 3.79 | 5.97 | 39539.02 | 11# | 148/298 | 303.461 | 4.38 | 6.76 | 42743.19 | 12# | 148/297 | 337.33 | 4.89 | 7.44 | 45241.95 | 13# | 148/301 | 324.969 | 4.64 | 7.12 | 44075.51 | 14# | 147.5/298 | 307.293 | 4.45 | 6.86 | 43104.91 | 15# | 148/298 | 283.163 | 4.09 | 6.37 | 41184.52 | 16# | 147.5/300 | 236.735 | 3.41 | 5.43 | 37193.95 | 17# | 147.5/298 | 194.210 | 2.81 | 4.6 | 33220.36 | 18# | 148/302 | 224.617 | 3.2 | 5.14 | 35868.57 | Mean (MPa) | 5.78 | 38537.77 | Standard deviation (MPa) | 0.84 | 3605.52 | Representative value at 95% guarantee rate (MPa) | 5.39 | 36897.26 |
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Note. The 8 #, 13 #, and 17 # core samples were not completely split, so their data were discarded in this calculation.
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