Use of additives to improve the capacity of bituminous mixtures to be heated by means of microwaves




Slag, Steel wool, Silicon carbide, Bituminous mixture, Microwave heating


This study examines the potential of adding electric arc furnace slag to bituminous mixtures to be heated by microwaves. The susceptibility of bituminous mixtures to microwave energy is limited and so, in order to improve the energy performance of the heating process, it is necessary to incorporate additives or components to the mixture so as to improve the capacity for microwave heating. The article presents the results of adding various components, (steel wool, scrap tire wire, silicon carbide, iron filings) and an alternative aggregate: electric arc furnace slag. According to the results obtained in the laboratory, slag addition of at least 5% by weight of the bituminous mixture represents the best option for both technical and economic reasons. The results may promote the valorization of this steel industry residue in bituminous mixtures by improving microwave heating response.


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Vázquez, E.; Barra, M. (2001) Reactivity and expansion of electric arc furnace slag in their application in construction. Mater. Construcc. 51 [263-264], 137–148.

CEN. EN 13043/AC:2004. Aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked areas.

Fernández, A.; Alonso, M.A.; López-Moro, F.J.; Moro, M.C. (2013) Polished Stone Value Test and its relationship with petrographic parameters (hardness contrast and modal composition) and surface micro-roughness in natural and artificial aggregates. Mater. Construct. 63 [311], 377–391.

Asi, I.M. (2007) Evaluating skid resistance of different asphalt concrete mixes. Build. Environ. 42 [1], 325–329.

Pasetto, M.; Baldo, N. (2011) Mix design and performance analysis of asphalt concretes with electric arc furnace slag. Constr.Build.Mater. 25 [8], 3458–3468.

Bosisio, R.G.; Spooner, J.; Granger, J. (1974) Asphalt road maintenance with a mobile microwave power unit. J.Microwave.Power.EE. 9 [4], 381–386.

Al-Ohaly, A.A.; Terrel, R.L. (1988) Effect of microwave heating on adhesion and moisture damage of asphalt mixtures. Transport.Res.Rec. 1171, 27–36. Transportation Research Board. National Research Council. Washington, D.C.

Benedetto, A.; Calvi, A. (2013) a pilot study on microwave heating for production and recycling of road pavement materials. Constr.Build.Mater. 44, 351–359.

Wang, Z.J.; Zhao, P.; Ai, T.; Yang, G.Y.; Wang, Q. (2011) Microwave absorbing characteristics of asphalt mixes with carbonyl iron powder. Prog.Electromagn.Res. 19, 197–208.

Wang, Z.; Wang, S.; Ai, T.; Zhao, P. (2014) Laboratory preparation and microwave heating test of CIPs/Asphalt binder. Pavement Materials, Structures, and Performance GSP 239, 1–8.

Gallego, J.; Del Val, M.A.; Contreras, V.; Páez A. Heating asphalt mixtures with microwaves to promote self-healing. Constr.Build.Mater. 42, 1–4.

Statistics 2010. Association of Metallurgical Producers and Processors. Duisburg-Rheinhausen, Germany.

ADECGLOBAL Eco-integración Ambiental. Ficha técnica de Producto. Marcado CE: Árido siderúrgico 9/5 GA85. In accordance with EN 13043:2002 + AC:2004.

CEN. EN 12591:2009. Bitumen and bituminous binders. Specifications for paving grade bitumens.

CEN. EN 12697-30:2006. Test methods for hot mix asphalt. Part 30: Specimen preparation by impact compactor.

CEN. EN 12697-6:2003. Bituminous mixtures. Test methods for hot mix asphalt. Part 6: Determination of bulk density of bituminous specimens.

CEN. EN 12697-34:2007. Bituminous mixtures. Test methods for hot mix asphalt. Part 34: Marshall Test.



How to Cite

Gallego, J., del Val, M. A., Contreras, V., & Páez, A. (2017). Use of additives to improve the capacity of bituminous mixtures to be heated by means of microwaves. Materiales De Construcción, 67(325), e110.



Research Articles