Geogrid-reinforced low-volume flexible pavement response to loadings by various tire configurations

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nine fully instrumented low-volume flexible pavement sections were tested at the University of Illinois to evaluate the effect of three types of tire configurations on geogridreinforced pavements. The nine sections were divided into three cells comprised of 76 mm hot-mix asphalt (HMA) placed on 203, 305, and 457 mm aggregate layers, respectively. Geogridreinforcement was incorporated in at least one section in each cell. The pavement was instrumented during construction with pressure cells, strain gauges, LVDTs, thermocouples, piezometers, and time domain reflectometers. The test sections were exposed to accelerated loading. The tires used for loading were dual-tire assembly and 425 and 455 wide-base tires at five loading levels and two speeds. The study found that the 455 wide-base tire caused greater transverse strain in the thin HMA layer than the conventional dual-tire assembly when relatively thin granular layer is used on weak subgrade. However, as the supporting granular base layer stiffness increases, the difference in strain diminishes. It was evident that the new generation of 455 wide-base tire caused less damage to the low-volume flexible pavements than the old generation 425 wide-base tires. The measured longitudinal deflection in the base layer and vertical deflection in the subgrade were significantly lower for the 455 wide-base tire and dual-tire assembly when compared to the 425 wide- base tire. As the supporting base layer stiffness increases, the wide-base 455 tire's and the dual-tire assembly's overall effects on the pavement become similar for different loading conditions.

Original languageEnglish (US)
Title of host publicationEfficient Transportation and Pavement Systems
Subtitle of host publicationCharacterization, Mechanisms, Simulation, and Modeling - Proceedings of the 4th International Gulf Conference on Roads
Pages741-751
Number of pages11
StatePublished - Dec 1 2008
Event4th International Gulf Conference on Roads - Doha, Qatar
Duration: Nov 10 2008Nov 13 2008

Publication series

NameEfficient Transportation and Pavement Systems: Characterization, Mechanisms, Simulation, and Modeling - Proceedings of the 4th International Gulf Conference on Roads

Other

Other4th International Gulf Conference on Roads
CountryQatar
CityDoha
Period11/10/0811/13/08

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Transportation

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  • Cite this

    Al-Qadi, I. L., Dessouky, S. H., & Tutumluer, E. (2008). Geogrid-reinforced low-volume flexible pavement response to loadings by various tire configurations. In Efficient Transportation and Pavement Systems: Characterization, Mechanisms, Simulation, and Modeling - Proceedings of the 4th International Gulf Conference on Roads (pp. 741-751). (Efficient Transportation and Pavement Systems: Characterization, Mechanisms, Simulation, and Modeling - Proceedings of the 4th International Gulf Conference on Roads).