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Geotextile reinforcement can be used to improve the construction and long-term performance of roadway and railway systems. These improvements are accomplished through structural interaction with granular layers in the roadway or railway section, enhancing the integrity and structural capacity of these support layers over the life of the roadway or railway system. In this chapter, reinforcement applications in paved roads, unpaved roads, and railroads will be presented. The types of geotextiles used in these applications and their key properties in providing optimal performance will be reviewed. Guidelines for their selection and use in these applications will be presented and references will be provided for further information and advice. This will include synergistic consideration with respect to other functions such as separation, filtration, and drainage (ie, as covered in chapters Geotextiles used in separation Geotextiles used in filtration, and Geotextiles used in drainage) for optimal improvement in roadway performance. Insight will also be provided with regard to future trends and advancements such as smart geosynthetics, which provide long-term monitoring capabilities. |
