The coarser MSWIBA resulted in higher connected
porosities for the same w/c ratio. There was no significant difference
between the two slurry loss rates. The highest 7-day compressive
strength values were 8.40 and 8.24 MPa for the
experimental and comparison groups, respectively, for the same
w/c ratio of 0.35. The highest 28-day split tensile strengths were
0.91 and 0.97 MPa, respectively, for the same w/c ratio of 0.35.
The bending strengths of the concretes in the comparison group
were lower than those of the concretes in the experimental group.
The permeability coefficients were 1.67–2.34 and 1.09–2.03 cm/s
for the experimental and comparison groups, respectively.