The Efficiency of the Benefits of Tire-Derived Aggregate Backfill for Buried Concrete Pipes Beneath Paved and Unpaved Roads

Tire-derived aggregate (TDA) has been proposed in recent studies to be considered as part of backfill soil reduce stress and strain developed buried pipes. However, little attention is paid checking the influence TDA on behavior concrete pipes under trafficked roads. This research this topic using a verified numerical model that considers three-dimensional nature traffic load effects. Different road sections were analyses cover effect presence pavement layer thickness base subbase materials. The results revealed decreases bending moment induced pipe wall. performance was found remarkably influenced by burial depth, it increases depth decreases. Furthermore, for with outer diameters 1.49 m 2.89 much lower than 0.41 0.79 m. Importantly, highest reduction achieved 1.0 depth. provide insight into and, thus, will help practitioners make decision regarding use routine design