Further studies of pore size distribution in mortars

The method of mercury penetration was used to study the influence of variations in the sandi cement and waterlcement ratios on the pore size distributions of mortars, down to pore sizes of 0·01μ; diameter. It was found that the total volume of the pores with diameters greater than 5μ; increased as the sandi cement ratio increased, but decreased as the waterlcement ratio increased, within the limits of the experiments.

It was also found that the cross-section of the pores became more irregular as the sand content increased. and that at low waterlcemem ratios an increase of the water/cement ratio tended to produce pores of more regular cross-section.