Sound Absorption and Material Properties of Asphalt Rubber Concrete Specimens

Authors

DOI:

https://doi.org/10.56007/arrivet.v1i1.20

Keywords:

asphalt rubber concrete, pavement, sound absorption

Abstract

The acoustic and material properties of asphalt crumb rubber (ARC) pavement have been measured and correlated. Laboratory measurements revealed nonlinear relationships between the sound absorption coefficients and material properties of compacted specimens as a function of the percentage of crumb rubber content in conventional and modified binders.

The acoustic performance of conventional asphalt and asphalt rubber concrete specimens are compared to their material properties as a function of crumb rubber content to determine how crumb rubber content influences sound absorption. The normal incidence sound absorption coefficients, porosity, percentage of voids in mineral aggregate, and absolute gas permeability are measured for specimens containing 0, 5, 10, 15, and 20% crumb rubber in the asphalt binder.

The random incidence sound absorption coefficient and material property data share nonlinear distributions within some frequency ranges, as a function of crumb rubber content in the conventional and modified asphalt binders.

Author Biographies

Dr. Graeme Drysdale, Saskatchewan Polytechnic, Regina, Saskatchewan, Canada

Dr. Graeme Drysdale is an Innovative Manufacturing Instructor at Saskatchewan Polytechnic, Regina Campus, and an Applied Researcher with the Sustainability-Led Integrated Centres of Excellence. He is registered as a Professional Engineer with the Association of Professional Engineers and Geoscientists of Saskatchewan and a member of the Continuing Professional Development Compliance Committee. He possesses a Bachelor of Science Honours degree in Physics, a Master of Applied Science degree in Electronic Systems Engineering, and a Doctorate in Industrial Systems Engineering from the University of Regina. 

Dr. Liming Dai, University of Regina, Regina, Saskatchewan, Canada

Dr. Liming Dai is a Professor of Industrial Systems Engineering at the University of Regina. He is a licensed Professional Engineer with the Association of Professional Engineers and Geoscientists of Saskatchewan and is an American Society of Mechanical Engineers Fellow. He possesses a Masters of Applied Science from the University of Regina and a Doctorate from the University of Calgary.

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Published

2023-11-29

Issue

Vol. 1 No. 1 (2023): ARRIVET - Applied Research Results in Vocational Education and Training magazine

Section

a. Research Results – applied research findings from projects undertaken by VETs.

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