Volume No. 7 Issue No.: 4A Page No.: 1651-1656 April-June 2013

 

REPLACEMENT OF NATURAL SAND IN CONCRETE BY WASTE PRODUCTS : A STATE OF ART

 

Bahoria B.V.*1, Parbat D.K.2 and Naganaik P.B.3

1. Department of Civil, NYSS College of Engineering and Research, Nagpur
(INDIA)
2. Department of Civil, Government Polytechnic, Sakoli, Bhandara (INDIA)
3. Department of Civil, GH Raisoni College of Engineering, Nagpur (INDIA)

 

Received on : December 25, 2012

 

ABSTRACT

 

In this paper an attempt is made to present a state-of the- art review of papers on replacement of natural sand by by-products and recyclable materials. This paper aims to deal with the current and future trends of research on the use of Manufactured Fine Aggregate (MFA) in Portland cement concrete. With natural sand deposits the world over drying up, there is an acute need for a product that matches the properties of natural sand in concrete. In the last 15 years, it has become clear that the availability of good quality natural sand is decreasing. With a few local exceptions, it seems to be a global trend. Existing natural sand deposits are being emptied at the same rate as urbanization and new deposits are located either underground, too close to already built-up areas or too far away from the areas where it is needed, that is the towns and cities where the manufacturers of concrete are located. Environmental concerns are also being raised against uncontrolled extraction of natural sand. The arguments are mostly in regards to protecting riverbeds against erosion and the importance of having natural sand as a filter for ground water. The above concerns, combined with issues of preserving areas of beauty, recreational value and biodiversity are an integral part of the process of most local government agencies granting permission to aggregate producers across the world. This is the situation for the construction industry today and most will agree that it will not change dramatically in the foreseeable future. Crushed aggregate, bottom ash, foundry sand and various by-products are replacing natural sand and gravel in most countries. This paper emphasizes on the use of material to be replaced by natural sand which will give new dimension in concrete mix design and if applied on large scale would revolutionize the construction industry by economizing the construction cost and enable us to conserve natural resources.

 

Keywords : Replacement, Natural sand, Concrete, Manufactured Fine Aggregate (MFA) Urbanization

 

 

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