Effect of Blending Constant Concentration of Acrylic Polymer with Varying Amount of Fly Ash to the Permeability and Strength of Large Aggregate Pervious Concrete

Abstract

Storm water runoff brings environmental problems like flooding and pollutant transport, not only to the residential areas but also in low elevated roads with poor to bad sewage system. Soil is a naturally porous material, and its permeable property is blocked as surface pavements are constructed, making pervious concrete an important alternative in addressing the problem caused by storm water runoff. In this study, a constant weight percentage of 15% acrylic polymer (AcP) solution on water is used for the preparation of concrete mix, resulted to an increase in strength of the PC. Another additive which is the Fly ash (FA) was used to enhance the strength of the PC partially replacing the Type I cement at 5%, 10%, 15%, and 20%. Physical (porosity and permeability) and mechanical (compression and flexural strength) properties were investigated, and the statistical tool One-Way Analysis of Variance (ANOVA) was used to analyze the results. The 20% replacement obtained the highest compressive strength at 9.89MPa, while the 15% replacement acquired the highest flexural strength at 3.57 MPa. In terms of permeability, the control mix (0% Fly ash) has the highest performance at 4.76 cm/s. The favorable result in pervious concrete proved that the use of Acrylic Polymer and fly ash blend to the cement were a useful component to further improve its mechanical properties, and acceptability of its use for flood and contaminant transport mitigation.