Abstract:
The porosity and compressive strength of pervious concrete are critical determinants of its suitability for
various applications. Therefore, it is necessary to recognise the factors influencing the performance and
its ranks to balance porosity and compressive strength ideally. This study evaluates the impact of
aggregate shape, size, aggregate-to-cement ratio and compaction effort on previous concrete
performance. The research involved varying aggregate sizes (5–12 mm, 12–18 mm and 18–25 mm),
aggregate-to-cement ratios (3.0, 4.0 and 5.0), compaction efforts (0, 30 and 60 blows) and aggregates
underwent revolutions in a ball mill (0, 200 and 1000) to change their morphological characteristics. A
total of 81 mix designs were tested, resulting in 486 cubes for compressive strength and porosity
testing. The acquired data underwent analysis using the statistical analysis and Taguchi method to
discern the most influential factors and establish their ranking. The results indicate that revolutions,
compaction, aggregate-to-cement ratio and aggregate size contribute 29.42%, 26.19%, 29.13% and
0.96%, respectively, to the compressive strength performance. Regarding porosity performance,
revolutions and compaction emerge as significant factors, accounting for 39.95% and 26.91%,
respectively. The influence of the aggregate-to-cement ratio and aggregate size on porosity
performance appears less pronounced.
