Unpaved roads, geosynthetics

Railways tracks are supported by granular material called ballast . The application of geosynthetics in railways is therefore somewhat similar to unpaved roads and can be considered basically in two categories ... 

Hawkins, W.M., June/July, 2008. Geotextiles in unpaved roads a 35-year case history. Geosynthetics Magazine 26 (3), 26—33. 

Fannin, R.J., Sigurdsson, O., 1996. Field observations on stabilization of unpaved roads with geosynthetics. Journal of Geotechnical Engineering 122 (7), 544—553. 

Geosynthetics have been used in new road construction in various ways to minimise the previousiy mentioned probiems as weii as in the maintenance of existing paved roads (overiays appiied to strengthen existing pavements). In this category of application the two principal roles for geosynthetics are separation/filtration, and reinforcement. The use of geosynthetics to perform these functions in unpaved and paved roads is discussed in Section 5.1.3.1 and 5.1.3.2. 

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