Waste and industrial by-products represent a significant
percentage of the industrial landfill. The evaluation of these products has a
dual effect: it avoids both the landfill (risk of environmental pollution) and
limits the use of natural aggregates (depletion of natural resources and
landscape fragmentation and the imbalance of the ecosystem). In recent years,
applications for industrial waste have been taken into account in the
construction of roads with a great interest in many industrialized countries
and developing countries. The use of these materials in the construction of the
road is a decision based on technical, economic and ecological criteria. In
 P. Chaurand, J. Rose, V. Briois, L. Olivi, J.-L. Hazemann, O. Proux, J. Domas and J.-Y. Bottero, “Environmental Impacts of Steel Slag Reused in Road Construction: A Crystallographic and Molecular (XANES),” Journal of Hazardous Materials, Vol. 139, No. 3, 2007, pp. 537-542. doi:10.1016/j.jhazmat.2006.02.060
 W. Shena, M. Zhoua, W. Mab, J. Hub and Z. Caib, “In vestigation on the Application of Steel Slag—Fly Ash— Phosphogypsum Solidi?ed Material as Road Base Material,” Journal of Hazardous Materials, Vol. 173, No. 1, 2010, pp. 468-473.
 D. Durincka, F. Engstromb, S. Arnouta, J. Heulensa, P. T. Jonesa, B. Bjorkmanb, B. Blanpaina and P. Wollants, “Hot Stage Processing of Metallurgical Slags,” Conservation and Recycling, Vol. 52, No. 10, 2008, pp. 1121-1131.
 L. Roth and M. Eklund, “Environmental Evaluation of Reuse of By-Products as Road Construction Materials in Sweden,” Waste Management, 2003, pp. 107-116. www.elsevier.com/locate/wasman
 D. Qiao, J. S. Qian, Q. Z. Wang, Y. D. Dang, H. Zhang and D. Q. Zeng, “Utilization of Sulfate-Rich Solid Wastes in Rural Road Construction in the “Three Gorges Reservoir for Rural Road Construction,” Conservation and Recycling, Vol. 54, No. 12, 2010, pp. 1368-1376.
 “Direction de la Recherche et de la Perspective,” Ministère des Travaux Publique, Algérie. www.mtp.gov.dz/drp.htm
 Entreprise Nationale de Commercialisation et de Distri bution des Produits Pétroliers, Sonatrach, Site Officiel de NAFTAL SPA—Algérie. www.naftal.dz/produits.php.