ABSTRACT
ABSTRACT: Tire derived aggregate might substitute for other granular materials in civil engineering structures. Processing the tires to obtain granulate materials has a cost that increases rapidly as the aggregate size decreases; this reason favors the use of large aggregate sizes. Minimizing the risk of self-combustion is another reason why large aggregate sizes are favored in civil engineering applications. The use of relatively large aggregate sizes (30 to 3 cm) poses a characterization problem. Geotechnical test equipment is classically designed to deal with smaller granulate sizes. Tire derived aggregates of smaller sizes are available and may be employed as an analogue, but the doubt remains about the validity of the properties thus derived for the larger aggregate sizes employed in civil engineering structures. A testing program has been designed to explore possible size effects in shear resistance and compressibility of tire derived aggregates. This communication presents some results of that testing program, with an emphasis on shear resistance.
