Title: An Investigation of Tire-derived Lightweight Aggregate Concrete
Author(s): Fariborz M Tehrani, John Carreon, and Nathan Miller
Publication: Symposium Paper
Appears on pages(s): 68-98
Keywords: tire-derived aggregate; lightweight aggregate; ductility; toughness; fracture; compression test; static modulus of elasticity; splitting tensile strength; flexural strength
Detailed experimental and analytical studies were carried to investigate the effect of recycled tire-derived aggregates (TDA) on ductility and toughness of lightweight aggregate (LWA) concrete specimens containing coarse expanded shale aggregates and fine mineral aggregates. Investigations covered six different concrete mix with various portions of LWA replaced by TDA. Mechanical properties of each mix, including compressive strength, splitting tensile strength, flexural strength, and modulus of elasticity were measured to obtain the optimum range of TDA to LWA ratio. Further, dynamic destructive tests were carried to highlight the performance of tire-derived lightweight aggregate concrete (TDLWAC) subjected to impact loads. Moreover, the post-peak behavior of these specimens was modeled using a linear elastic fracture mechanics relationship. The model successfully demonstrated the effect of TDA in the enhancement of cracking behavior of TDLWAC.