recycled aggregate in concrete ppt

When structures made of concrete are demolished or renovated, concrete recycling is an increasingly common method of utilizing the rubble. Concrete was once routinely trucked to landfills for disposal, but recycling has a number of benefits that have made it a more attractive option in this age of greater environmental awareness, more environmental laws, and the desire to keep construction costs down.Concrete aggregate collected from demolition sites is put through a crushing machine. Crushing facilities acce ....etc

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The Use of Recycled Rubber Tyres in Concrete Construction


Introduction
Background
The disposal of waste tyres is becoming a major waste management problem in the
UK. It is estimated that 37 million car and truck tyres are being discarded annually and
this number is set to increase, in line with the growth in road traffic and car ownership,
by a further 39% by 2011 and 63% by 2021 (Martin, 2001).

Objectives
The overall objective of the project is to investigate the ....etc

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Abstract
There is no doubt that the increasing piles of used tires create environmental concerns. As waste continues to accumulate and availability and capacity of landfill spaces diminish, agencies are increasing application and use of recycled materials such as crumb rubber from tires in construction. The basic building materials in concrete construction are primarily aggregate and cement. The educated use of recycled materials can result in reduced cost potentials and may enhance performance; however, not all recycled materials are well sui ....etc

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THE USE OF RECYCLED RUBBER TIRES AS A PARTIAL REPLACEMENT FOR COARSE


1. INTRODUCTION
1.1 Background of the Study
Cement and aggregate, which are the most important constituents used in concrete
production, are the vital materials needed for the construction industry. This inevitably led to
a continuous and increasing demand of natural materials used for their production. Parallel to
the need for the utilization of the natural resources emerges a growing concern for protecting
....etc

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