Behavior of the Dynamic Modulus and Fatigue in Asphalt Mixtures with Blast Oxygen Furnace Slag and Blast Furnace Dust

Authors

  • Ricardo Ochoa ORCID
    Affiliation

    Program of Transportation and Road Engineering, Faculty of Engineering, Pedagogical and Technological University of Colombia, 150002, Tunja, Colombia

  • Alfonso López ORCID
    Affiliation

    Program of Metallurgical Engineering, Faculty of Engineering, Pedagogical and Technological University of Colombia, 150002, Tunja, Colombia

  • Gloria Grimaldo ORCID
    Affiliation

    Program of Industrial Engineering, Faculty of Engineering, University of Boyacá, 150003, Tunja, Colombia

https://doi.org/10.3311/PPci.17672

Abstract

Slag from a Blast Oxygen Furnace (BOF) is produced during the transformation of cast iron, coming from the blast furnace, into steel during the integrated steelmaking process, just as blast furnace dust (BFD) is produced during the transformation of the iron mineral into cast iron. These residues have generated environmental problems due to the accumulation and inadequate disposal thereof. Consequently, this study aims to analyze the use and behavior of the dynamic modulus and the fatigue in asphalt mixtures with partial (50 %) and total (100 %) substitution of the coarse aggregate for BOF slag and the fine aggregate for BFD. The results are compared with the behavior of a mixture elaborated with conventional aggregates. To achieve this objective, the chemical and physical properties of BOF and BFD were determined along with the optimum asphalt cement content, determined using the Ramcodes methodology. Tests were carried out to evaluate the physical characteristics, the dynamic modulus, and the fatigue of each type of mixture. The results of this study demonstrate adequate fatigue behavior and a slight reduction in dynamic modulus in mixtures with BOF and BFD. This allows us to deduce that the use of these residues is feasible and thereby to contribute to sustainable development and the protection of the environment.

Keywords:

blast furnace dust, blast oxygen furnace, dynamic modulus, fatigue, asphalt mixture

Published Online

2021-03-29

How to Cite

Ochoa, R., López, A., Grimaldo, G. “Behavior of the Dynamic Modulus and Fatigue in Asphalt Mixtures with Blast Oxygen Furnace Slag and Blast Furnace Dust”, Periodica Polytechnica Civil Engineering, 65(3), pp. 840–851, 2021. https://doi.org/10.3311/PPci.17672

Issue

Section

Research Article