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首页> 外文期刊>International journal of geotechnical engineering >A state-of-the-art review on geosynthetics in low-volume asphalt roadway pavements
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A state-of-the-art review on geosynthetics in low-volume asphalt roadway pavements

机译：小体积沥青路面的土工合成技术最新进展

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A majority of the applications to incorporate geosynthetics into pavements exist in low-volume asphalt roadways. This paper presents a state-of-the-art review of geosynthetics in pavements for low-volume asphalt roadways. Within that realm, the use of geosynthetics is grouped into three categories for the purpose of this review. The categories are sub-pavement reinforcement, interlayer reinforcement, and other non-reinforcing applications; each has been found to incorporate geosynthetics into pavements with some degree of success. In this paper, selected case studies and major findings of each case study are summarized in the form of a table for each category. From this review, it is clear that geogrids are especially useful as sub-pavement reinforcement. Field experience suggests that geogrids installed into low-volume pavement sections at one-third depth from the top of an aggregate sub-base course have had very good success. Interlayer reinforcement with geosynthetics has been geared to reduce or retard reflective cracking in pavement overlays. This application has been found to be valuable; however, the benefits realized are circumstantial. Geosynthetics as interlayers should only be incorporated when a pavement's main failure mode is fatigue or age cracking, and should be carefully prescribed based on economics. Other uses of geosynthetics in roadways have been focused on moisture transportation or mitigation of moisture movement. It was found that most of these geosynthetic applications are well developed and can be employed as needed by design engineers.
机译：将土工合成材料结合到人行道中的大多数应用都存在于小体积的沥青路面中。本文介绍了用于小体积沥青路面的路面中土工合成材料的最新进展。在该领域内，出于审查的目的，土工合成材料的使用可分为三类。类别为子路面增强，层间增强和其他非增强应用；已经发现每一种都将土工合成材料结合到人行道中并取得了一定程度的成功。在本文中，以表格的形式总结了每个类别的选定案例研究和每个案例研究的主要发现。从这篇评论中可以明显看出，土工格栅作为子路面加固特别有用。现场经验表明，土工格栅安装在距集料基层路线顶部三分之一深度处的小体积人行道上，取得了很好的效果。具有土工合成材料的中间层增强材料已被设计用于减少或延迟路面覆盖层中的反射裂缝。已经发现该应用是有价值的。但是，实现的收益是间接的。仅当人行道的主要破坏模式为疲劳或老化裂缝时，才应使用土工合成材料作为中间层，并且应根据经济情况谨慎规定。土工合成材料在道路中的其他用途已集中在水分运输或减轻水分运动。已经发现，大多数土工合成应用程序都开发完善，可以由设计工程师根据需要使用。

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