Durability properties of rubber aggregates based geopolymer concrete- a review

Abstract

The most essential component of concrete is aggregate. However, because there aren't enough of these natural resources, they need to be replaced. There has been a lot of study done so far to make sustainable concrete and get beyond the challenges of materials. One of the finest solutions to this issue is the whole or partial replacement of aggregates. Waste resources that are depleting the environment are utilized as alternative materials to enhance sustainability in concrete. One such substance that contributes significantly to greenhouse gas emissions is waste rubber tires. The paper focused on the use of rubber in geopolymer concrete to improve durability and address sustainability issues. The addition of rubber aggregates leads to a slight decrease in the mechanical properties of geopolymer concrete by a sustainable amount. When it comes to durability properties such as Porosity, Water Absorption, Energy Absorption, Impact resistance, and Noise reduction coefficient, it shows an increment compared to nominal geopolymer concrete and Ordinary Portland cement. Density, Thermal Conductivity, Pull-off Strength, and Abrasion resistance tests show decrements due to the truncated stiffness of rubber. There is a significant increase in the properties of mortar and concrete after the crumbed rubber is treated. Rubber-based geopolymer concrete, with the help of admixtures, can be used in the field of construction.