Evaluation on Performance of Bituminus Concrete Mixes with Replacement of Fly Ash as Filler and Sisal Fibre as Stablizing Additive

Abstract

Hot Bituminous mixes are commonly used in India, Pavements are always prone to distress such as cracking, pot holes, pavement deformation and surface wears. Modification of Bituminous mix is one of the approaches to improve the pavement performances. The  best improvement technique observed so far are Bituminous mixes with stabilizing with additives like Crumb rubber, Natural Fibre and Fly ash or Coal ash etc. Used as a filler replacement to increase the performance and economical point of view. In the present study has been made to study the effect of use of naturally available Fibre called Sisal Fibre is used as a stabilizer and coal ash (fly ash) used as a filler replacement in Bituminous concrete mixes.  Performance tests such as Marshal Stability, Indirect tensile strength, tensile strength ratio, Fatigue Tests are conducted. Results of Laboratory performance represent that modified BC mix is better than conventional BC mix.