Experimental Study on the Effect of Large Temperature Difference on Compressive Strength and Pore Structure of Semirigid Base

Table 8

Experimental results of dynamic modulus of semirigid base material under the temperature range of −20°C∼20°C.

Number of cycles	Parallel modulus test value (MPa)			Modulus representative value (MPa)	Standard deviation	Coefficient of variation (%)
0	17129	16249	18480	17286	1123.68	6.50
3	5483	6142	7250	6292	892.98	14.19
6	4453	4622	5678	4918	663.91	13.50
9	4034	4790	5029	4618	519.85	11.26
12	4834	3928	4333	4365	453.82	10.40
15	3783	3566	4717	4022	611.69	15.21