The effect of overloaded vehicles on the asphalt pavement design
DOI:
https://doi.org/10.14295/transportes.v30i3.2643Keywords:
Trucks weight, Axle overloading, Pavement damage, Weigh stationAbstract
The truck load allowed for freight transport in Brazil is established by the "truck weigh station law", which allows for an excess, or a tolerance, in the weighing, in their gross weight and in the weights of each axle. These tolerances have been justified by deviations inherent to the weighing systems, and by the eventual movement of the goods inside the truck. Tolerances of 5% on PBT and 5% on axles were introduced in the 1980s, and modified to 7.5% on axles in the late 1990s. In July 2014, based on the CONTRAN Resolution n°. 489, the tolerance was extended to 10% on the axles. This paper presents data analysis over a 6-year period of weighing trucks on a weigh station of a Brazilian heavy-duty highway, which operates 24 hours a day, 7 days a week, showing changes in the profile of freight transport due to the law revision in July 2014. The results reveal that there is an increase in overloading, indicating the use of the tolerance by the freight transporters, and consequences of trucks overloading in the asphalt pavements design, and reduction of their design life.
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Copyright (c) 2022 Flaviane Melo Lopes Vallejo, Caio Rubens Santos, Liedi Legi Bariani Bernucci, Carlos Yukio Suzuki, Kamilla Vasconcelos Savasini, Linda Lee Ho
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