2. Scope
The tests and variables used in the experiment are shown
in Table 1. The water–cement ratio of the porous concrete
was fixed at 25%. The amount of silica fume and fly ash to
be added were 10% and 20%, respectively. In addition, an
adequate mixing ratio of cement dispersing admixture for
optimum flow value of the cement paste was determined.
Two different aggregate particle sizes (5 to 10 mm and 10 to
20 mm) and three different P/Gs (30%, 40% and 50%) were
incorporated in the experiment.