In the last few years, the deployment of the natural sources has been leading to re-use and recycle several materials that have been considered as “waste” so far. The proposed study analyses the possible re-employment of the Ladle Furnace Steel (LFS) slags as filler in Hot Mix Asphalt (HMA). The main aim of the research is the evaluation of both the chemical composition of LFS and the performance level of HMAs. The analysis of chemical composition involved three different hydration methods. The HMA performance level was evaluated at different scales (mixture and mastic), performing mechanical tests. Three different conventional fillers and one type of LFS were investigated in combination with two different asphalt binders. The results showed that the presence of LFS leads to an increase in brittleness in terms of mechanical response, while not significantly modifying chemical and mineral composition.
Re-using Ladle Furnace Steel slags as filler in asphalt mixtures / Roberto, A.; Mantovani, L.; Romeo, E.; Tebaldi, G.; Montepara, A.; Tribaudino, M.. - In: CONSTRUCTION AND BUILDING MATERIALS. - ISSN 0950-0618. - 323:(2022), p. 126420.126420. [10.1016/j.conbuildmat.2022.126420]
Re-using Ladle Furnace Steel slags as filler in asphalt mixtures
Roberto A.
;Mantovani L.;Romeo E.;Tebaldi G.;Montepara A.;Tribaudino M.
2022-01-01
Abstract
In the last few years, the deployment of the natural sources has been leading to re-use and recycle several materials that have been considered as “waste” so far. The proposed study analyses the possible re-employment of the Ladle Furnace Steel (LFS) slags as filler in Hot Mix Asphalt (HMA). The main aim of the research is the evaluation of both the chemical composition of LFS and the performance level of HMAs. The analysis of chemical composition involved three different hydration methods. The HMA performance level was evaluated at different scales (mixture and mastic), performing mechanical tests. Three different conventional fillers and one type of LFS were investigated in combination with two different asphalt binders. The results showed that the presence of LFS leads to an increase in brittleness in terms of mechanical response, while not significantly modifying chemical and mineral composition.| File | Dimensione | Formato | |
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Reusing LFS slags as filler in asphalt pavements_postprint.pdf
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