LAUSR

Given the increase of Tunisia's car fleet and the high utilization of tires, waste production has risen sharply, causing enormous economic and environmental problems in this country. Our research team is in the process of developing different axes of valorization of this waste tires crumbs from the perspective of the field of civil engineering. This work presents the first results of the valorization in the road surface by producing a bituminous concrete (BC) containing aggregates coming from waste tires (crumbs). This study is carried out using the aggregates of DJebel El Oust showing that the addition of the rubber crumb reduces the mechanical strength, and on the other hand, the compactness increases and the resistance to water is improved. An environmental study was conducted on the modified bituminous concrete mixed with waste tires crumbs. It is recommended that in order to reduce the environmental impacts, the modified bituminous concrete is best used on acid Tunisian soils located mainly in the extreme North West region of the country.