Analysis of Support Reaction Curves considering Time-Varying Effect of Shotcrete

Table 6

The time effect parameters of shotcrete.

Time (d)	Elastic modulus (GPa)	Creep coefficient	Equivalent modulus of elasticity (GPa)
0.25	6.32	1.55	2.48
0.5	10.69	1.52	4.24
0.75	13.74	1.50	5.50
1	15.90	1.47	6.43
1.25	17.46	1.45	7.13
1.5	18.61	1.42	7.69
1.75	19.49	1.40	8.13
2	20.18	1.37	8.51
2.25	20.74	1.35	8.84
2.5	21.22	1.32	9.14
2.75	21.63	1.30	9.41
4	23.25	1.19	10.62
7	26.20	0.98	13.23
14	30.96	0.65	18.72
20	33.48	0.46	22.86