Full-scale trafficking tests were conducted to evaluate the effect of novel polymeric-alloy geocell reinforcement on base courses for low-volume unpaved roads over weak subgrade. Three types of in-fill materials—crushed limestone (AB-3) aggregate, quarry waste (QW), and recycled asphalt pavement (RAP)—were used for the base courses over a weak subgrade layer consisting of A-7-6 clay. Four unpaved sections that included one unreinforced control section of AB-3 aggregate 30 cm thick and three 17-cm novel polymeric-alloy geocell-reinforced sections were tested under a single-axle dual-tire wheel loading. The road sections were exhumed and examined after the moving-wheel test. The benefits of novel polymeric-alloy geocell reinforcement were evaluated in relation to rut depths for a specific number of passes of the wheel load and the angle of stress distribution from the surface to the base course–subgrade interface. The test results demonstrated that the novel polymeric-alloy geocell reinforcement improved the performance of unpaved AB-3 and RAP sections. The QW section also showed better performance in relation to stress distribution angle.
Accelerated Pavement Testing of Geocell-Reinforced Unpaved Roads over Weak Subgrade
Transportation Research Record: Journal of the Transportation Research Board
Transportation Research Record: Journal of the Transportation Research Board ; 2204 , 1 ; 67-75
2011-01-01
Article (Journal)
Electronic Resource
English
Validation of Geocell Design for Unpaved Roads
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