2016 Volume 27 Pages 57-66
The relationship between the surface permeability and pore volume of heavyweight concrete made using metal slag-type heavyweight aggregate with SSD density of over 4.0 g/cm3 was investigated. This concrete was proportioned to provide a density of 3.0 t/m3. Within the scope of this experiment and for practical reasons, adopting 0.1μm as the reference size, the surface permeability and pore volume of this concrete showed a high correlation, with the permeation rate increasing as the percent volume of pores larger than 0.1μm increased. Moreover, the addition of an appropriate amount of an expansive additive or fly ash was found to decrease the percent volume of pores 0.1μm or higher, while reducing the permeation rate. In this study, volume ratios were used instead of weight ratios to compare the pore volume of concretes with different densities.
