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

Table 7

Experimental results of dynamic modulus of semirigid base material under the temperature range of −5°C∼−30°C.

Number of cycles	Parallel modulus test value (MPa)			Modulus representative value (MPa)	Standard deviation	Coefficient of variation (%)
0	11940	13290	12726	12652	678.12	5.36
3	5394	4928	4547	4956	424.18	8.56
6	4312	4367	5167	4616	478.48	10.37
9	8341	7009	8166	7839	723.48	9.23
12	5180	4722	6175	5359	742.88	13.86
15	4819	4132	5267	4739	571.98	12.07