Effect of Using a 50:50 Blend of Recycled Concrete (R.C.C) Waste Dust and Brick Masonry Waste Combined as Filler in Bituminous Mix Design

Md Shajahan Ali, Mohammad Zakir Hossain Khan, Md. Rifat Hossain, Md. Ashikur Rahman and Diba Tabassum
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Md Shajahan Ali: Department of Civil Engineering, Bangladesh Army University of Engineering and Technology
Mohammad Zakir Hossain Khan: Department of Civil Engineering, Bangladesh Army University of Engineering and Technology
Md. Rifat Hossain: Department of Civil Engineering, Bangladesh Army University of Engineering and Technology
Md. Ashikur Rahman: Department of Civil Engineering, Bangladesh Army University of Engineering and Technology
Diba Tabassum: Department of Civil Engineering, Bangladesh Army University of Engineering and Technology

International Journal of Latest Technology in Engineering, Management & Applied Science, 2025, vol. 14, issue 7, 1042-1049

Abstract: Bituminous concrete, often referred to as asphaltic concrete, is one of the most technically refined and high-cost types of flexible pavement layers employed in surface courses. Due to its premium performance requirements, bituminous mixtures are precisely formulated to meet specific standards for strength, stability, and durability. This composition includes well-graded coarse aggregates, fine aggregates, and a mineral filler, all uniformly coated with a bitumen binder. The mineral filler, which passes through a 0.075 mm sieve, plays a crucial role in enhancing the performance of asphalt mixtures. Research shows that Marshall Stability improves with an increase in filler content, and the Asphalt Institute recommends 4 to 8% filler content in asphalt concrete. In Bangladesh, traditional fillers like cement, limestone, and granite powder are neither economically viable nor widely available. As an alternative, this study investigates the use of a 50:50 blend of recycled concrete (R.C.C) waste dust and brick masonry waste combined with natural sand as a cost-effective and sustainable filler. The study evaluates the performance characteristics of bituminous mixtures incorporating this blended filler and compares the results with those of mixes using conventional filler materials such as fine sand and stone dust.

Date: 2025
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