2026-04-21T02:16:48Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/68872024-05-17T09:50:46Zcom_10259_6171com_10259_5086com_10259_2604com_10259.4_104com_10259_4204col_10259_7105col_10259_6848col_10259_4205
Bituminous base courses for flexible pavements with steel slags
Skaf Revenga, Marta
Bartolomé González, Javier
Gonzalo Orden, Hernán
Linares Unamunzaga, Alaitz
Ortega López, Vanesa
Manso Villalaín, Juan Manuel
Infraestructuras
Infrastructures
Ingeniería civil
Transportes
Civil engineering
Transportation
Trabajo presentado en: R-Evolucionando el transporte, XIV Congreso de Ingeniería del Transporte (CIT 2021), realizado en modalidad online los días 6, 7 y 8 de julio de 2021, organizado por la Universidad de Burgos
The purpose of this research was to study the feasibility of incorporating steel slags into
coarse bituminous mixtures. The objective was twofold: to reduce dependence on natural
aggregates, and to provide a use for industrial by-products. The slags studied come from
the manufacture of carbon steel in electric furnaces and are divided into two types: Electric
Arc Furnace (EAF) slag and Ladle Furnace (LF) slag. The mixture designed is coarse
bituminous concrete (AC22G), for base courses in flexible pavements.
In a first phase, the physical characterization of the materials was carried out to check their
suitability. In a second phase, three types of mixes were designed: a control mix (made
with natural limestone aggregates), a mix where LF slag was introduced to replace the
filler and the fine fraction (sand) of the mix; and finally, the feasibility of manufacturing a
totally sustainable mix was analyzed, which would fully incorporate EAF slag as coarse
aggregate and LF slag as fine aggregate and filler. In a third and final phase, the designed
mixes were subjected to different mechanical, water sensitivity, and durability tests.
The research demonstrated that the incorporation of EAF and LF steel slag as a substitute
for natural aggregate in coarse bituminous mixtures is feasible, meeting regulatory
requirements, improving sustainability in the construction industry, as well as reducing
emissions, and contributing to climate change mitigation.
This work was supported by the Junta de Castilla y León (Regional Government) and ERDF [grant number UIC-231, BU119P17] and the University of Burgos [grant number SUCONS, Y135.GI].
2022-09-16T10:16:15Z
2022-09-16T10:16:15Z
2021-07
info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
978-84-18465-12-3
http://hdl.handle.net/10259/6887
10.36443/10259/6887
eng
R-Evolucionando el transporte
http://hdl.handle.net/10259/6490
https://doi.org/10.36443/9788418465123
info:eu-repo/grantAgreement/Junta de Castilla y León//BU119P17
info:eu-repo/grantAgreement/Universidad de Burgos//Y135.GI
info:eu-repo/semantics/openAccess
application/pdf
Universidad de Burgos. Servicio de Publicaciones e Imagen Institucional