Abstract
Road infrastructure is used by various types of vehicles among which heavy vehicles imposes the most critical loading, causing damage in pavement structure, which ultimately leads to an increased m...
Highlights
A road structure is subjected to various types of loading during its life
During the design of road pavements, each type of vehicle is converted into equivalent standard axle load (ESAL) to consider their impact on road structure
This article aims at quantifying the number of overloaded vehicles and their impact on road structure in terms of equivalent standard axle loads (ESALs), which is used for determining the pavement thickness during the design of road
Summary
A road structure is subjected to various types of loading during its life. These include traffic load and environmental actions producing stresses and strains in road structure. The response of pavement structure to these loads depends on the stiffness of subgrade, type of pavement, pavement thickness and type of traffic the pavement carries. It is the overloaded vehicles which cause more damage to the pavement. The damaging effects of overloaded axles on a pavement include fatigue, which reduces the design life of a pavement, and rutting, which causes the serviceability problem in the pavement. The latter can be structural or non-structural depending upon the design of different pavement layers, anticipated loads and ground moisture conditions
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