Washed municipal solid waste incinerator bottom ash (MSWIBA) was used in this study as a substitute
for natural aggregate in pervious concrete. The mix proportions of the concrete were first determined
using a vertical flow test. Other tests, including permeability, compressive strength, bending and split
tensile strength tests, were also performed. The test results show that the unit weight of the fresh pervious
concrete made with MSWIBA was approximately 1653–2080 kg/m3 and increased with the ratio
of cement paste filling. In specimens with the same water–cement ratio, the compressive, bending and
split tensile strengths all increased with the ratio of filling paste. The split tensile and bending strengths
were approximately 1/9 and 1/4 of the compressive strength, respectively. The connected porosity and
permeability coefficients are linearly correlated; both decrease as the filling ratio is increased.