Prospect of using geotextile reinforcement within flexible pavement layers to reduce the effects of rutting in the middle and southern parts of Iraq

Abstract

Geotextile reinforcement techniques have been widely used in paving works around the world and have proven to be effective in improving pavement performance. This study has focused on using different positions and numbers of geotextile reinforcement sheets between the layers of flexible pavement for rutting reduction. Fitting depth was measured in the field at seven constructed sections of the pavement of the road model. Each section has been strengthened with different reinforcement approaches. All road sections were subjected to a maximum load repetition of 10,000 cycles. The results indicate that using three layers of geotextile beneath each course of the designed road pavement sections (surface, binder, and base) reduced rutting by 96%. Traffic benefit ratio (TBR) has been employed in this study to reveal the behavior of geotextile reinforcement in increasing the service life of the road. TBR values are the load cycling ratio between the reinforced and unreinforced section for the exact recorded rut depth, it has been found to be minimally equal to 4 for the case of using one layer of reinforcement at interface I, and that value keeps growing up for other reinforcement cases.

Using the Mats of Palm Fronds in Reinforcement Pavement Layers

“…Cagliari University states the steel mesh reinforcements increase the service life of pavement by a factor with range (3)(4)(5)(6)(7)(8)(9)(10)(11)(12), while Palermo University conclude the rutting depth decrease by 50% [10].…”

“…Sa'adi et al, [12] Tested seven of road sections with geotextile reinforcement at different positions and compared with unenforced section under cycle number 10000. they found the rutting depth is decreasing about 96% when using three geotextile (above subbase, base and binder), and 52% when using one geotextile (above binder).…”