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

Note. The 8 #, 13 #, and 17 # core samples were not completely split, so their data were discarded in this calculation.