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Industrial scale production of innovative asphalt mixtures with steel slag aggregates and reclaimed asphalt

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Resumo:This paper aims to assess and analyze the production and application of asphalt mixtures incorporating steel slag aggregates (SSA) and reclaimed asphalt (RA) at the industrial scale. The goal was to identify the main difficulties in translating the laboratory scale to the industrial scale and check for any differences in the application phase of these asphalt mixtures. Mechanical characterization of the trial section was also performed and analyzed. In this field trial, two types of asphalt mixtures were developed: i) an AC 20 asphalt mixture for the binder course with SSA, RA, and natural aggregates (NA); ii) an AC14 asphalt mixture for the surface course with SSA and NA. The experimental study comprised the volumetric characterization of the mixtures and water sensitivity and rutting resistance tests. The results showed that the performance of the developed mixtures is similar to that of conventional asphalt mixtures, which validates their application on a large scale. Also, these results can contribute to the future development of technical specifications for the design and quality control of asphalt mixtures with high amounts of alternative aggregates.
Autores principais:Loureiro, Carlos Daniel Aleixo
Outros Autores:Moura, Caroline Fernandes Nunes; Silva, Hugo M. R. D.; Oliveira, Joel R. M.; Rodrigues, Mafalda
Assunto:Asphalt mixtures Steel slag aggregates Reclaimed asphalt Industrial scale Field trial
Ano:2023
País:Portugal
Tipo de documento:comunicação em conferência
Tipo de acesso:acesso restrito
Instituição associada:Universidade do Minho
Idioma:português
Origem:RepositóriUM - Universidade do Minho

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