Use of Steel Slag as an Alternative to Aggregate and Filler in Road Pavements

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 natura...

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Bibliographic Details
Published in:Materials 2021-01, Vol.14 (2), p.345
Main Authors: Dondi, Giulio, Mazzotta, Francesco, Lantieri, Claudio, Cuppi, Federico, Vignali, Valeria, Sangiovanni, Celestino
Format: Article
Language:English
Subjects:
Aggregates
Asphalt mixes
Asphalt pavements
Cement
Concrete mixing
Conglomerates
Construction
Demolition
Fillers
Laboratories
Masonry
Mechanical properties
Metallurgy
Particle size
Pavements
Raw materials
Rehabilitation
Road construction
Roads & highways
Slag
Stability analysis
Steel industry
Stiffness
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Summary: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.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14020345