Diffusion Decay Coefficient for Chloride Ions of Concrete Containing Mineral Admixtures

Table 4

Average diffusion coefficients for chloride ions of concrete.

W/B (%)	Cement type	Diffusion coefficient for chloride ions (×10^−12, m^2/s)
		28 days	91 days	182 days	273 days	365 days
35	OPC	11.64	6.85	5.99	5.25	4.99
	GGBFS20	6.27	4.19	3.03	2.86	2.42
	GGBFS40	4.43	2.23	2.19	1.66	1.53
	GGBFS60	3.54	1.99	1.56	1.38	1.02
	FA10	8.70	3.64	2.69	2.33	1.91
	FA20	9.32	2.30	1.60	1.49	1.40
	FA30	10.08	1.98	1.53	1.34	1.29
45	OPC	17.27	13.51	11.05	10.17	9.62
	GGBFS20	9.18	6.25	5.03	4.39	4.19
	GGBFS40	8.52	4.26	3.68	2.64	2.27
	GGBFS60	5.80	2.40	2.19	1.89	1.54
	FA10	12.69	6.92	5.20	3.68	3.42
	FA20	17.55	6.02	3.42	2.95	2.71
	FA30	19.82	4.92	2.34	2.05	1.61
55	OPC	24.51	19.89	17.55	17.11	16.84
	GGBFS20	16.53	9.29	8.88	8.61	8.47
	GGBFS40	11.06	4.76	4.02	3.90	3.49
	GGBFS60	8.38	2.88	2.47	2.00	1.75
	FA10	36.93	15.99	12.18	11.45	10.68
	FA20	38.27	12.38	9.60	8.02	7.13
	FA30	42.04	11.16	5.22	4.75	4.26