Life Prediction of Iron Ore Tailings Concrete under Freeze-Thaw Cycle Based on Weibull Distribution

Table 9

The comparison between the calculated value and the experimental value of freeze-thaw damage degree.

Replace rate (%)	Freeze-thaw cycles
	20			40			60
	E (%)	C (%)	E/C	E (%)	C (%)	E/C	E (%)	C (%)	E/C
0	1.68	1.64	1.02	3.88	3.94	0.98	6.33	6.54	0.97
20	1.46	1.38	1.06	3.23	3.49	0.93	5.72	5.98	0.96
40	1.12	1.11	1.01	3.00	3.03	0.99	5.41	5.41	1.00
60	1.94	1.90	1.02	4.30	4.42	0.97	7.06	7.19	0.98
80	2.11	2.08	1.01	4.79	4.85	0.99	7.77	7.91	0.98
Replace rate (%)	Freeze-thaw cycles
	80			100			120
	E (%)	C (%)	E/C	E (%)	C (%)	E/C	E (%)	C (%)	E/C
0	9.18	9.33	0.99	12.28	12.23	1.00	15.73	15.20	1.03
20	8.82	8.71	1.01	11.83	11.60	1.02	15.01	14.62	1.03
40	8.15	8.11	1.00	11.07	11.05	1.00	14.16	14.17	1.00
60	10.16	10.11	1.00	13.17	13.11	1.00	16.30	16.15	1.01
80	11.09	11.13	1.00	14.54	14.43	1.01	18.16	17.76	1.02

E means experimental value and C means calculation value.