Volume No. 3 Issue No.: 3 Page No.: 720-727 Jan-Mar 2009

 

THE USE OF SAWDUST ASH AS FINE AGGREGATE REPLACEMENT IN CONCRETE

 

M. Mageswari* and B. Vidivelli

Department of Structural Engineering, Annamalai University, Annamalai Nagar, Tamilnadu, (INDIA)

 

Received on : November 13, 2008

 

ABSTRACT

 

Sawdust Ash (SDA) generated from rice mills is usually delivered to landfills for disposal. Using of sawdust ash in concrete is an interesting possibility for economy on waste disposal sites and conservation of natural resources .This paper examines the possibility of using sawdust ash as replacement in fine aggregate for a new concrete. Natural sand was partially replaced (5%, 10%, 15%, 20%, 25% and 30%) with SDA. Compressive strength, Tensile strength (cubes and cylinders) and Flexural strength up to 180 days of age were compared with those of concrete made with natural fine aggregates. Fineness modulus, specific gravity, moisture content, water absorption, Bulk density, %voids, % porosity (loose and compact) state for sand (S) and SDA were also studied. The test results indicate that it is possible to manufacture concrete containing sawdust ash with characteristics similar to those of natural sand aggregate concrete provided that the percentage of sawdust ash as fine aggregate is limited to 10-20% respectively.

 

Keywords : Sawdust Ash, Mechanical properties, Fineness Modulus, Bulk density, Moisture content, Water absorption.

 

 

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