INFLUENCE OF COMPACTION METHODS ON FUNCTIONAL AND STRUCTURAL PERFORMANCE OF PERVIOUS CONCRETE

Performance of pervious concrete mainly depends on strength and its interconnected macro-pore structure which allow water to percolate through. A careful mix design is required, to achieve mix of desired porosity and strength. Due to variation in specimen preparation technique a lots of variations were observed in performance of pervious concrete, this can be due to variation in mixing procedure and method of compaction. Extensive researches in the past have been done on different mix parameters that influence the structural and functional performance of pervious concrete. However, the compaction method is one of the key parameter, is still a conjecture. The main objective of this study was to study the effect of compaction methods on performance of pervious concrete. Specimens were prepared with four gradations of aggregates with constant water to cement ratio (W/C) of 0.32 and three types of aggregate to cement ratio (A/C) ratios of 3.5, 4.0 & 4.5. All the mixtures were designed as per American Concrete Institute (ACI) guidelines with three different compaction methods namely; rodding, proctor hammer and pneumatic vibration. Effects of compaction methods on structural as well as functional performance of pervious concrete were studied. Results demonstrate the influence of compaction methods on different pervious concrete specimens.