Research on the Effect of Curing Temperature, Steel Fiber, and Admixture Content on Concrete Performance Based on Orthogonal Test in Cold Region

Table 6

The compressive strength of concrete specimens at various ages.

Number	Compressive strength (MPa)
	1 d	3 d	7 d	28 d
1	1.900	6.080	6.840	12.990
2	1.790	5.900	6.160	12.020
3	1.903	4.833	4.780	13.527
4	3.523	6.513	9.987	17.147
5	2.303	4.060	6.433	11.34
6	3.103	5.213	7.613	11.97
7	3.250	7.120	14.823	20.323
8	4.630	7.390	9.830	13.963