Experimental Study on Replacement of Sand by Quarry Dust and Partial Replacement of Cement by Fly Ash and Natural Admixture (Guar Powder).
Dr. M.G.L. Annaamalai1, V. Ramkumar2
1 Head of the Department, Civil Engineering, VSA Group of Institutions, Tamil Nadu, India.
2 Assistant Professor, Civil Engineering, VSA Group of Institutions, Tamil Nadu, India.
ABSTRACT
Sand is one of the constituents used in the production of concrete, become expensive and also a scarce material. In view of this, there is a need to identify suitable alternative material from industrial waste in place of river sand. The utilization of quarry dust which is a waste material as been accepted as building material in many countries for the past three decades. Recycling involves processing used materials into new products in order to control to waste of potentially use full materials reduce the consumption of fresh raw materials, reduce energy usage, reduce air and water pollution by reducing the need for conventional waste disposal. Concrete traditionally consists of cement fine aggregate coarse aggregate and water. Guar cum, also called guaran, is a galactomannan polysaccharide extracted from guar beans that has thickening and stabilizing properties useful in food, feed and industrial application. The guar seeds are mechanically dehusked hydrated milled and screened according to application. It is typically produced as a free-flowing, off-white powder. The guar been is principally grown in India, Pakistan, the United States, Australia, and Africa. India is the largest producer accounting for nearly 80% of world production. In India, Rajasthan, Gujarat, and Haryana are the main producing regions. The US has produced 4,600 to 14,000 tonnes of guar over the last five years. Texas acreage since 1999 has fluctuated from about 7,000 to 50,000 acress. The world production for guar gum and its derivatives is about 1.0 million tonnes. Non-food guar gum accounts for about 40% of the total demand.
Keywords:
Admixtures, guar gum, hydtation, polysaccharide, guar derivatives super plasticzers,
