Mechanical And Infiltration Characteristics Of Pervious Concrete Pavement Incorporating Reclaimed Asphalt Pavement Aggregates: A Review

Natural permeable ground is being converted into an impermeable land cover as a result of increased construction of concrete and asphalt pavement accompanying the urbanisation and expansion of highway infrastructure. Pervious concrete pavement is an efficient solution that can manage stormwater runoff and reduces the impact of Urban Heat Islands(UHI).<br><br>Recycled Asphalt Pavement (RAP) aggregate use within cementitious materials has gained popularity in recent years. But the addition of RAP aggregates in pervious concrete mix can affect its mechanical as well as infiltration properties. This study examines the impact of RAP addition through a thorough examination of how pervious concrete's characteristics have changed.<br> Numerous studies analysed the characteristics of various mixtures, including permeability, water infiltration and clogging, elastic modulus, abrasion resistance, compressive strength, flexural strength, and elastic modulus.. This paper reviews the effect of RAP addition with a detailed analysis of changes in the properties of pervious concrete. The properties such as compressive strength, flexural strength, elastic modulus, abrasion resistance, split tensile strength, water infiltration and clogging, and permeability of different mixes were analysed across various studies. <br><br>The addition of RAP aggregate increases the infiltration performance of pervious concretes but there is also a significant decrease in mechanical behaviour. Although the concrete's flexural strength declined as RAP material was added, the ratio of maximum stress to flexural strength was lower than it would have been for a control mix without RAP. This suggests that utilising concrete that contains RAP might enhance the functionality of concrete pavements. In virtue of this, the tested mixtures satisfied the minimal specifications outlined in regulations for use as non-structural pervious concrete for standard bicycle lanes, sidewalks, or other uses requiring a lower level of strength.Furthermore, the inclusion of RAP aggregates can resolve the issues of its disposal space thus having a significant contribution to the environment