Analysis of the Impact of Overloading Goods Transportation on the Design Life of Flexible Pavemnet

Abstract

Overloading goods often pass through the Pekanbaru Taluk Kuantan Crossroad, which is a national road, causing damage to the road surface. Based on these problems, this study aimed to determine the damage capacity of vehicles and their impact on decreasing the design life of the road pavement. The data used for overloading goods transportation are primary data obtained by directly observing the results of weighing goods transportation at the Motor Vehicle Weighing Implementation Unit for 7 days and calculating the LHR as well as technical drawing data for pavement maintenance for the Pekanbaru-Taluk Kuantan Crossroad obtained from B2PJN Riau Province. The damaging power of vehicles and the decrease in design life were analysed using the AASHTO method. The result of this study indicated that the cumulative damaging power of vehicles on the road section under normal loading conditions is 1,064,232.81 ESAL so the number of repetitions of traffic loads is 6,640,034.55 ESAL at the end of the design life. For the condition of overloading, the cumulative damage value of the vehicle increases to 3,527,541.81 ESAL, resulting in the number of repetitions of the vehicle traffic load of 22,009,281.42 ESAL at the end of the design life. The impact of overloading goods transportation on the life road pavement decreased by 64.6%. This indicates that before the road's 5-year design age, the road will no longer be able to serve the load of passing vehicles.