2026-09-15T09:45:11Zhttps://gredos.usal.es/oai/request

oai:gredos.usal.es:10366/1551772025-04-30T20:18:26Zcom_10366_4368com_10366_4349com_10366_3946com_10366_3823col_10366_4369

Mechanical performance of sustainable asphalt mixtures manufactured with copper slag and high percentages of reclaimed asphalt pavement Muñoz-Cáceres, Osvaldo Lagos-Varas, Manuel Andrés-Valeri, Valerio C. Valdés-Vidal, Gonzalo Movilla-Quesada, Diana Raposeiras, Aitor Castro-Fresno, Daniel Copper slag Reclaimed Asphalt Pavement Macrotexture Moisture sensitivity Fatigue Rutting Fuente: Construction and Building Materials [EN] The use of reclaimed asphalt pavement (RAP) in the construction of hot mix asphalt (HMA) pavements is a widely used alternative in the development of sustainable road infrastructure. For this reason, the use of higher RAP contents continues to be a topic of interest. This study evaluated the performance of semi-dense asphalt mixtures incorporating 50% to 70% RAP and 7.5% and 15% copper slag (CS) as partial replacement of aggregate, to determine the influence of CS on the effective increase of RAP in the design of sustainable asphalt mixtures. The mixtures were evaluated using macrotexture, fatigue strengths, water sensitivity, and the Hamburg wheel tracking test. The results show that the use of RAP improves the permanent deformation resistance (RD) and fatigue life of the mixtures, while the mean texture depth (MTD) and indirect tensile strength ratio (ITSR) decrease. The incorporation of CS in the mixtures with RAP improved MTD and ITSR compared to the mixtures including only RAP and allowed higher RAP contents in fatigue and Hamburg wheel tests without showing a negative influence. 2024-02-01T15:45:08Z 2024-02-01T15:45:08Z 2021-10-18 info:eu-repo/semantics/article Muñoz-Cáceres, O., Raposeiras, A. C., Movilla-Quesada, D., Castro-Fresno, D., Lagos-Varas, M., Andrés-Valeri, V. C., & Valdés-Vidal, G. (2021). Mechanical performance of sustainable asphalt mixtures manufactured with copper slag and high percentages of reclaimed asphalt pavement. Construction and Building Materials, 304, 124653. doi:10.1016/j.conbuildmat.2021.124653 0950-0618 http://hdl.handle.net/10366/155177 10.1016/j.conbuildmat.2021.124653 eng https://doi.org/10.1016/j.conbuildmat.2021.124653 Proyecto FONDECYT Iniciación 11140889 http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional