Use of Steel Slag as an Alternative to Aggregate and Filler in Road Pavements
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Department of Civil, Chemical, Environmental and Material Engineering, University of Bologna, 40100 Bologna, Italy
2
F.I.S. Impianti Interrati S.R.L., Grumello del Monte, 24064 Bergamo, Italy
*
Author to whom correspondence should be addressed.
Materials 2021, 14(2), 345; https://doi.org/10.3390/ma14020345
Received: 20 November 2020
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Revised: 4 January 2021
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Accepted: 8 January 2021
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Published: 12 January 2021
(This article belongs to the Special Issue Asphalt Road Paving Materials)
Today the use of Construction and Demolition Materials (CDM) can be considered as a suitable solution for the construction or the rehabilitation of road pavements. In this context, it is central to minimizing waste production, favoring the reuse through new production cycles to replace virgin natural raw materials. As illustrated in this study, steel slag has mechanical properties that justify its use as aggregate in the manufacture of bituminous mixes. In road construction, their use is focused on the substitution of fine aggregate and filler in bituminous mixtures. Mechanical characterizations, Marshall stability and indirect tensile resilient modulus (ITSM) tests were used to evaluate the laboratory performance of the mixtures. The research aims are to provide the use of these materials for the construction of the entire road pavement structure; in this study authors used these materials both in the characterization of cementitious layers and in those with bituminous conglomerate. In both cases, the use of steel slag has favored an increase of stiffness in the mixtures.
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MDPI and ACS Style
Dondi, G.; Mazzotta, F.; Lantieri, C.; Cuppi, F.; Vignali, V.; Sangiovanni, C. Use of Steel Slag as an Alternative to Aggregate and Filler in Road Pavements. Materials 2021, 14, 345. https://doi.org/10.3390/ma14020345
AMA Style
Dondi G, Mazzotta F, Lantieri C, Cuppi F, Vignali V, Sangiovanni C. Use of Steel Slag as an Alternative to Aggregate and Filler in Road Pavements. Materials. 2021; 14(2):345. https://doi.org/10.3390/ma14020345
Chicago/Turabian StyleDondi, Giulio, Francesco Mazzotta, Claudio Lantieri, Federico Cuppi, Valeria Vignali, and Celestino Sangiovanni. 2021. "Use of Steel Slag as an Alternative to Aggregate and Filler in Road Pavements" Materials 14, no. 2: 345. https://doi.org/10.3390/ma14020345
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