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.


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    Title :

    Accelerated Pavement Testing of Geocell-Reinforced Unpaved Roads over Weak Subgrade


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:


    Publication date :

    2011-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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