• Chandrakant Ratrey
• Akhand Pratap Singh

A bituminous mixture is made up of coarse aggregate, fine aggregate, filler, and binder. A Hot Mix Asphalt is a bituminous mixture in which all elements are heated before being mixed, put, and compacted. HMA can be Dense Graded Mixes (DGM) also known as Bituminous Concrete (BC) or Gap Graded Asphalt (SMA). To keep the mix from draining, SMA requires stabilising additives made of cellulose fibres, mineral fibres, or polymers. The current study attempted to investigate the effects of using a naturally and locally available fibre termed SISAL fibre as a stabiliser in SMA and as an additive in BC. The aggregate gradation was chosen according to MORTH specifications, the binder concentration was varied on a regular basis from 4% to 7%, and the fibre content was varied from 0% to a maximum of 0.5% of the overall mix. As part of the preliminary study, fly ash was discovered to have satisfactory Marshall Properties and was so employed for mixes in following works. The Optimum Fibre Content (OFC) for both BC and SMA blends was determined using the Marshall Procedure to be 0.3%. Likewise, the Optimum Binder Content (OBC) for BC and SMA was discovered to be 5% and 5.2%, respectively. The BC and SMA mixes prepared at OBC and OFC are then subjected to several performance tests such as the drain down test, the static indirect tensile strength test, and the static creep test to assess the effects of fibre addition on mix performance. The addition of sisal fibre improves the mix features such as Marshall Stability, Drain down characteristics, and indirect tensile strength in both cases BC and SMA mixes. Ii is observed that SMA is better than BC in respect of indirect tensile strength and creep characteristics.

Bituminous Concrete (BC), Stone Matrix Asphalt (SMA), Sisal Fibre, Marshall Properties, Static Indirect Tensile Strength, Static Creep.

"A COMPREHENSIVE LABORATORY STUDY ON IMPROVING BITUMINOUS MIXES WITH NATURAL FIBRE REINFORCEMENT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 7, page no.i506-i516, July-2023, Available :http://www.jetir.org/papers/JETIR2307871.pdf

"A COMPREHENSIVE LABORATORY STUDY ON IMPROVING BITUMINOUS MIXES WITH NATURAL FIBRE REINFORCEMENT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 7, page no. ppi506-i516, July-2023, Available at : http://www.jetir.org/papers/JETIR2307871.pdf