DefinePK

Abstract

Rubber Waste is produced largely worldwide every year. Its discharge is challenging to the environment and its decomposition takes long time. Therefore reuse of rubber in concrete mix is plausible. It was added to concrete as coarse aggregate and its different properties like compressive strength and flexural were investigated and compared with ordinary concrete. Results show that rubberized concrete is durable, less ductile, has greater crack resistance but has a low compressive strength when compared with ordinary concrete. This study is evaluating the properties of concrete mix with adding crumb rubber. In this study we focus on compressive and flexural strength of concrete by adding several percentages (1 to 5 %) of crumb rubber replacing cement in the mix. Using crumb rubber in concrete decreases compressive and flexural strength which means that it may not be suitable for rigid pavement. Rubber crumb size has an effect where fine grain rubber seems to minimize loss in concrete mix by 11% per 5 % increase in rubber. However, rubber enhances other properties that may be useful for special uses like noise reduction and water absorption reduction. The loss in compressive strength of rubberized concrete can be compensated by additives like silica.