Performance Assessment of Pervious Concrete Road on Strength and Permeability by Using Silica Fume

Abstract

Abstract: Pervious concrete is most sustainable material become more popular due to having some extra ordinary characteristics like permeable concrete, no fine concrete and many more. Pervious concrete is a concrete which allows water pass through its surface due to presence of voids. Generally pervious concrete is made using cement, coarse aggregates, no or little fine aggregates, water and admixture. Pervious concrete can be used for low volume roads, parking lot, tennis court, sidewalk areas etc. As the concrete have high porosity, it has low strength as compared to impermeable concrete. In order to increase the strength some cementitious materials like- Silica fume, fly ash, Metakaolin etc. are used. Silica fume is a high density, high strength and durable cementitious materials which allow to increase strength in pervious concrete. Here the aim of the study is to improve performance of permeability, strength and abrasion resistance of pervious concrete by using silica fume at different percentage. Here a high-performance pervious concrete develops using cement 43 grade, silica fume, different size of coarse aggregate, little fine aggregates, water, superplasticizer (Rheoplast). To achieve higher and better strength and permeability partial replacement of silica fume by cement is done by 0%, 4%, 8%, 12%, and 16%, various sand percentage like- 5%, 7% and 9% with a fixed water cement ratio 0.35. This paper represents a detailed overview of experimental study on compressive strength, split tensile strength, flexural strength and cantabro abrasion resistance test at 7, 14, 28 day. The test result exhibited that use of silica fume in pervious concrete have improve the compressive strength, abrasion resistance and did not have detrimental change on permeability.