THE EFFECT OF LAYING GEOSYNTHETICS IN THE BASE COURSE OF As PAVEMENTS REINFORCEMENT OF BEARING CAPACITY

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  • As 舗装路盤内に敷設するジオシンセティックスによる支持力補強効果

Abstract

It is an important issue to reduce the life cycle cost of asphalt (hereinafter referred to as "As") pavement, which is a huge stock of more than 1.2 million kilometers in Japan, in order to maintain and manage it. In this study, geosynthetics are installed in the base course, and a proposal is made to extend the service life of As pavements by reinforcing the base course. In this report, we begin by capturing the behavior of geosynthetics effects in a homogeneous sandy substrate, where laboratory modeling experiments are feasible. The geosynthetics was then subjected to loading tests using a small soil tank and FEM analysis to investigate the effect of geosynthetics installation on the bearing capacity of the base course from both the model experiment and the analysis. The results showed that the bearing capacity was increased by laying geosynthetics in the soil.

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