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A platform for research: civil engineering, architecture and urbanism
Structural Contribution of Geogrid Reinforcement in Pavement
In this paper, the results of a series of cyclic plate load tests on geogrid base reinforced pavement sections were analyzed to incorporate the benefit of geogrid within the context of the new AASHTO Mechanistic-Empirical Pavement Design Guide (MEPDG). The structural contribution of geogrid reinforcement was quantified in terms of increasing the resilient modulus of base course layer and/or reducing the thickness of base aggregate layer in pavement structure. With regard to increase in resilient modulus, the effective resilient modulus of base course layer was backcalculated to account for the improvement in the performance in pavement section provided by the geogrid reinforcement. The increase in the base course resilient modulus was then quantified. The benefit of geogrid base reinforcement was also evaluated by the amount of reduction in the thickness of base aggregate layer of required performance defined in terms of Base Course Reduction (BCR) factor. The results show that the value of resilient modulus of the base course layer can be increased by 10-90 percent and that the thickness of base layer can be reduced by 12 to 49 percent for the geogrid reinforced pavement sections tested in this study. The results also indicated that the higher tensile modulus geogrids typically provide better performance.
Structural Contribution of Geogrid Reinforcement in Pavement
In this paper, the results of a series of cyclic plate load tests on geogrid base reinforced pavement sections were analyzed to incorporate the benefit of geogrid within the context of the new AASHTO Mechanistic-Empirical Pavement Design Guide (MEPDG). The structural contribution of geogrid reinforcement was quantified in terms of increasing the resilient modulus of base course layer and/or reducing the thickness of base aggregate layer in pavement structure. With regard to increase in resilient modulus, the effective resilient modulus of base course layer was backcalculated to account for the improvement in the performance in pavement section provided by the geogrid reinforcement. The increase in the base course resilient modulus was then quantified. The benefit of geogrid base reinforcement was also evaluated by the amount of reduction in the thickness of base aggregate layer of required performance defined in terms of Base Course Reduction (BCR) factor. The results show that the value of resilient modulus of the base course layer can be increased by 10-90 percent and that the thickness of base layer can be reduced by 12 to 49 percent for the geogrid reinforced pavement sections tested in this study. The results also indicated that the higher tensile modulus geogrids typically provide better performance.
Structural Contribution of Geogrid Reinforcement in Pavement
Chen, Qiming (author) / Farsakh, Murad Abu (author)
GeoCongress 2012 ; 2012 ; Oakland, California, United States
GeoCongress 2012 ; 1468-1475
2012-03-29
Conference paper
Electronic Resource
English
Structural Contribution of Geogrid Reinforcement in Pavement
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