DESIGN CONSIDERATIONS FOR FLEXIBLE PAVEMENTS IN WATER LOGGED AREA

Pavement failure is a common problem in India and especially areas having a high water table are mainly suffered from this problem. To overcome this problem, some methods are studied in this paper to improve the bearing capacity of soil such as the use of Geogrid, soil stabilization using different materials, and proper subsurface drainage. Soil can be improved by the addition of a stabilizer or excess aggregate. In any case, the traditional undercut & stabilization solution is often costly & always time-consuming. The paper suggests the use of different stabilization methods, plastic coated aggregates and geogrid which helps in increasing the bearing capacity of subgrade soil while greatly reducing the loss of aggregate and cover material into weak, wet or saturated subgrade soils