Volume No. 9 Issue No.: 2 Page No.: 402-410 October-December 201

 

INFLUENCE OF TYRE BUFFINGS ON SHEAR STRENGTH OF SOIL-FLY ASH MIXE

 

Barman Pranjal* and Singh Baleshwar

Department of Civil Engineering, Indian Institute of Technology, Guwahati (INDIA)

 

Received on : August 10, 2014

 

ABSTRACT

 

A laboratory triaxial testing program was performed to study the effect of tyre buffings inclusion on the shear strength of sand-fly ash mixes, with the aim of gainful utilization of two waste materials (fly ash and scrap tyres) together with a sandy soil in geotechnical applications. Scrap car tyres, a class F fly ash, and a fine sand were used. Initially, the sand was mixed with 20%, 35% and 50% of fly ash by soil weight for specimen preparation. Tyre buffings of 5% and 10% contents by soil weight were then added to the sand-fly ash mixes. Consolidated drained triaxial compression tests were conducted on specimens of all mixes compacted at their corresponding maximum dry density. Test results indicate that the addition of fly ash to the sand causes an increase in peak deviatoric stress. The addition of tyre buffing to the sand-fly ash mixes causes further reduction of peak deviatoric stress but is still greater than that of the sand alone. It is also observed that the inclusion of tyre buffing imparts ductility to the sand-fly ash mixes.

 

Keywords : Sand, Fly ash, Tyre buffings, Shear strength, Geotechnical properties

 

 

BACK