Comparative Study of Strength and Corrosion Resistant Properties of Plain and Blended Cement Concrete Types

Table 3

Permeability parameters for OPC, PPC, and PSC M30 and M40 grade concrete types.

Grade	Type of cement	Effective porosity/(%)		Coefficient of water absorption/(m^2s^−1) × 10^−7
		28 days	90 days	28 days	90 days
M30	OPC	15.15	10.72	3.20	2.30
	PPC	14.28	9.62	2.50	2.00
	PSC	12.61	9.57	0.71	0.40
M40	OPC	13.28	9.43	3.00	1.90
	PPC	12.42	6.79	2.90	1.10
	PSC	10.61	6.32	0.62	0.15