Benefits of Partial Replacement of Aggregates by Foundry Sand and Waste Rubber in Self Compacting Concrete

Abstract

Concrete manufacturing industry is the main largest consumer of the natural resources present in the world. Annually billion tons of raw materials, cement, sand and water are used in the manufacturing process of concrete. The over usage of natural resources creates imbalance in ecosystem. Therefore to reduce the usage of natural resources, alternative products are used. In present days only few amount of waste tyres are disposed due to the increase of wide usage of tyres for other recycling purposes. The rubber of old tyres is used for new tyres, agriculture, derived fuel, sports applications, and modified asphalt application and in civil engineering applications. The rubber is used as the modified asphalt process is widely recognized and there are so many future scopes for the incorporation of tyres into asphalt. This technology is used in various construction fields. The success rate of this technology is high in the construction of roads in the last 45 years. This rubber asphalt is produced in the one of the processes of recycled tyre rubber modified bitumen. The process is named as “wet process”. For some various quality problems, rubber asphalt is used in spite of some drawbacks. In most of the conditions, rubber asphalt is used in the pavement of roads. But due to the improper information, less support to local policies, lack of proper training, the existing technologies are struggling to adopt. In the present study, the main aim is to find out the usage of waste tyre rubber and foundry sand in manufacturing of concrete. And finally support the technology and help for wide usage in construction field. In this project, self-compacting concrete is used as concrete type. It can be placed and compacted under its own weight without vibration effects. This investigation calculates the strength and durability properties of Self-compacting concrete in which natural sand was partially replaced with waste foundry sand. Here there is an improvement in resistance of concrete against sulphate attack and rapid chloride permeability.