Recycling the Residue of Medical Waste Incineration as a Filler in Asphalt Paving Mixtures
Publication: Journal of Materials in Civil Engineering
Volume 35, Issue 12
Abstract
This study’s major goal is to examine the possibility of using medical waste (MW) incineration as a mineral filler in hot mix asphalt paving mixtures. Four different blends, including a reference mix, were subjected to binder testing, e.g., penetration, ductility, softening point, and rotational viscosity tests. All of the MW mixes contained the Marshall method’s optimal amount of asphalt. The engineering properties, including Marshall stability, indirect tensile strength, tensile strength ratio, and deformation strength in the Kim test, were determined. Chemical analysis results indicate that MW has iron, manganese, copper, zinc, and chromium as transition elements, which react with the asphalt heteroatoms comparable with . The results also indicate that the MW-asphalt mastic has lower ductility, softening point, and rotational viscosity than those for -asphalt mastic. All MWAC combinations, to a lesser extent, satisfy the minimal ASTM requirements of 8 kN stability, 2–4 mm flow, and 3%–5% air voids at the same optimal binder concentration. Even at 6%, the use of MW as a mineral filler obtained from solid waste in the creation of asphalt paving mixtures is conceivable and feasible.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
The author wishes to express his gratitude to the National Center for Construction Laboratories (NCCL) for technical assistance and the various companies and hospitals that provided materials used in this study.
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© 2023 American Society of Civil Engineers.
History
Received: Feb 12, 2023
Accepted: May 15, 2023
Published online: Sep 27, 2023
Published in print: Dec 1, 2023
Discussion open until: Feb 27, 2024
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