Recycling of Cement-Based and Biomass Ashes Waste Powders as Alternative Fillers for Hot Mix Asphalts: A Preliminary Laboratory Evaluation

Piergiorgio Tataranni (), Giulia Tarsi, Yunfei Guo, Paolino Caputo, Manuel De Rose, Cesare Oliviero Rossi and Rosolino Vaiana
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Piergiorgio Tataranni: Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Via U. Terracini, 28, 40131 Bologna, BO, Italy
Giulia Tarsi: Pesaresi Giuseppe SpA, 47922 Rimini, RN, Italy
Yunfei Guo: Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Via U. Terracini, 28, 40131 Bologna, BO, Italy
Paolino Caputo: Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci-Cubo 14D, 87036 Rende, CS, Italy
Manuel De Rose: Department of Civil Engineering, University of Calabria, Via P. Bucci-Cubo 46B, 87036 Rende, CS, Italy
Cesare Oliviero Rossi: Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci-Cubo 14D, 87036 Rende, CS, Italy
Rosolino Vaiana: Department of Civil Engineering, University of Calabria, Via P. Bucci-Cubo 46B, 87036 Rende, CS, Italy

Sustainability, 2025, vol. 17, issue 19, 1-19

Abstract: The construction sector has a prominent role in raw materials consumption and environmental depletion due to waste and emissions connected to the production of construction materials and construction/demolition operations. Thus, research is pushing to develop sustainable construction materials, mainly recycling waste and by-products. Following this trend, the present study explores the possible use of two different blends of cement-based waste powder and biomass ashes as filler for the production of asphalt concretes. The materials have been tested following the EN 13043 standard requirements for fillers for bituminous mixtures. Still, the basic performances of hot mix asphalts produced with the recycled materials have been evaluated on a laboratory scale. The physical, chemical, and mechanical characterization of the waste fillers and the bituminous mixtures showed advantages and downsides in the use of the recycled powders for hot mix asphalt production. Despite final performances in line with traditional hot mix asphalt, the chemical composition of the proposed fillers has a negative influence mainly on the water susceptibility of the mixture. However, the findings of the study open new perspectives on future possible applications of the recycled fillers in the road pavements sector.

Keywords: recycled cement waste; biomass ashes; alternative filler; circular economy; waste powders (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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