Development of Pavement Deflection Prediction Model using Benkelman Beam for Hilly Rural Roads

Abstract

1.1 GENERAL Pavement evaluation is used to find existing condition of road, whether the road is functionally and structurally stable. For structure evaluation of road i.e. deflection in road, CBR testing and traffic studies are used. It is characterized by the occurrence of structural damage of road pavement layers which is neglected for long period and can affect the traffic condition. Increase in traffic intensity, more axle can lead to pavement deterioration. So, Structural evaluation is necessary which include pavement deflection, soil testing etc. at regular interval is necessary. For this development of a pavement deflection prediction model is important. 1.2 NEED OF STUDY • To determine and specify the types of the failures in the pavement for the selected Rural roads. • Cracking is the most common behavioural failure of a pavement and it mostly occur due to the loading action by the moving vehicles. So to determine the exact reason for the failure the test is performed. • To determine the causes of failure and deterioration in order to be prevented in the future. • The causes due to which a pavement fail and deteriorate with time are to be found in order to get it prevented from happening in future. The overlay thickness is found and preferred size is taken in order to reduce failure. • To look into the causes of deflection in flexible pavement (bituminous pavement) before going into the strategies of the maintenance. • The main cause of deflection in a pavement is the regular application of load from the moving automobiles and other vehicles. So to find out the traffic volume and decide the overlay thickness can help a lot in reducing the deflection phenomena of pavement