Performance of Ground Clay Brick Mortars in Simulated Chloride and Sulphate Media

Table 2

Apparent diffusion coefficients of sulphate ions.

Cement type	w/c = 0.4			w/c = 0.5			w/c = 0.6
	Dapp (×10^−10m^2/s)	r^2	Cs (%)	Dapp (×10^−10m^2/s)	r^2	Cs (%)	Dapp (×10^−10m^2/s)	r^2	Cs (%)
OPC	2.99	0.97	1.56	3.82	0.97	2.02	4.06	0.96	2.28
PPC	2.23	0.99	1.23	3.19	0.96	1.38	3.67	0.96	1.68
OPCGB-25	2.56	0.97	1.42	2.91	0.98	1.99	3.11	0.97	2.37
OPCGB-35	2.45	0.97	1.41	2.69	0.99	2.13	2.83	0.98	2.34
OPCGB-45	2.92	0.97	1.61	3.16	0.97	2.13	3.33	0.97	2.45
OPCGB-50	3.19	0.96	1.62	3.38	0.96	2.03	3.68	0.97	2.58
PPCGB-15	1.49	0.99	1.13	1.98	0.98	1.68	2.72	0.97	1.69
PPCGB-20	1.19	0.99	1.13	1.60	0.97	1.62	2.26	0.97	1.54
PPCGB-25	2.39	0.97	1.24	3.59	0.95	1.62	3.86	0.94	1.78