Experimental evaluation of mechanical properties of roller compacted concrete incorporated with processed bagasse ash and triangular polyester fibers

Abstract

Roller compacted concrete (ROCC) has extensive uses in various industrial and heavy-duty pavement design applications which accommodates lower-speed traffic. This study aims to assess how processed bagasse ash (BA) and synthetic fibers i.e. Triangular polyester fibre (TPF) affect the mechanical performance characteristics of ROCC combinations. One of the key considerations for mix design is the ideal water content value for each ROCC mixture's maximum dry density. The impact of using processed sugarcane bagasse ash with 15%, 30%, and 45% by cement weight as a partial substitute to OPC and triangular polyester fibres as 0.25%, 0.50%, and 0.75% per 1 m3 on the ideal water content and mechanical properties were examined in this experimental work. It has been observed that the performance of various ROCC mixtures (compression, flexure, split tensile, impact and abrasion strength) with addition of TPF decline marginally as a result of the increased water requirement. To meet the requirements for strength and workability, mixtures with 30% processed bagasse ash in place of cement and Triangular polyester fibers after 90 days of curing age should be given consideration in mix design for sustainable construction. an NDT, Ultrasonic pulse velocity test has been conducted to validate the experimental results of compressive strengths of different ROCC mixes which replicate the ROCC with 30% replacement of processed bagasse ash along with fibres would be the optimal solution for sustainable construction practices.