Research Article
Experimental Study on the Effect of Large Temperature Difference on Compressive Strength and Pore Structure of Semirigid Base
Table 9
Fitting equations for semirigid base material under different temperature intervals.
| Temperature interval | Relationship | Fitting equations |
| 20°C ∼60°C | σc-N | σc = 18.445 – 1.007 N−0.750 | ED-N | ED = 18788.943 – 5243.348 N + 558.736N2 − 18.192 N3 |
| −20°C ∼20°C | σc-N | σc = 14.053 – 0.771 N0.861 | ED-N | ED = 8313.630 N−0.274 |
| −5°C ∼−30°C | σc-N | σc = 8.956 + 0.226 N + 0.097N2 − 0.005 N3 | ED-N | ED = 2277.745 + 981.578N − 55.255 N2 |
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