Recycling the Residue of Medical Waste Incineration as a Filler in Asphalt Paving Mixtures

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 CaCO3 reference mix, were subjected to binder testing, e.g., penetration, ductility, softening point, and rotation...

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Bibliographic Details
Published in:Journal of materials in civil engineering 2023-12, Vol.35 (12)
Main Authors: Tahir, Amal Mohammed, Al-Hadidy, A. I.
Format: Article
Language:English
Subjects:
Asphalt pavements
Building materials
Calcium carbonate
Chemical analysis
Civil engineering
Combustion
Ductility
Ductility tests
Fillers
Flow stability
Incineration
Manganese
Medical wastes
Mixtures
Paving
Softening
Softening points
Solid wastes
Tensile strength
Viscosity
Waste disposal
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Summary: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 CaCO3 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 CaCO3. The results also indicate that the MW-asphalt mastic has lower ductility, softening point, and rotational viscosity than those for CaCO3-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.
ISSN:0899-1561
1943-5533
DOI:10.1061/JMCEE7.MTENG-16474