Relations between pore structure and physical properties

2 Relations between pore structure and physical properties 

Partial replacement of Portland cement by a mineral addition can greatly decrease the permeability to water provided the age is such that sulhcienl reaction of the addition has occurred. For a paste with w/s 0.47 and 30% replacement of cement by pfa, cured at 20°C for 1 year, Marsh et al. (M87) found a permeability of 10 m s the corresponding paste of pure 

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