01732659

Component

http://www.trb.org/Publications/Blurbs/179567.aspx

Pavements are subjected to many forms of stress during their service life including cracking and failures. Many of the failures can be attributed to poor subgrade, freeze–thaw cycle variations, and fatigue under repetitive axle loadings. Fatigue related cracking can lead to riveting, potholes, and cracks in the wheelpath, etc. One way to improve pavement performance is to enhance the mechanical properties of the base–subbase. This research investigates mechanical concrete comprised of waste tire-derived geo-cylinders (TDGCs) filled with coarse aggregates to improve mechanical properties of base/subbase for low volume roads. Mechanical concrete helps in creating a more stable platform for the pavement system through confinement effects and distributes the stresses from axle loads to the ground and increases the base/subbase moduli. This paper focuses on the presentation and discussion of laboratory scale test results conducted on representative pavement sections consisting of mechanical concrete with different tire diameters and its effectiveness in enhancing the pavement base/subbase moduli under both static and fatigue loads up to 3 million cycles.

01730920

English

pp 299-310

2019-9

Transportation Research Circular

12th International Conference on Low-Volume Roads

Digital/other

Figures; Photos; References; Tables

Base course (Pavements); Fatigue tests; Laboratory tests; Load tests; Low volume roads; Mechanical properties; Pavement performance; Scrap; Subbase (Pavements); Tires

Highways; Materials; Pavements

TRIS, TRB, ATRI

Mar 2 2020 11:15AM