Impact of Multi-Axle Vehicles and Road Overloads on the Durability of Asphalt Pavements ()
ABSTRACT
The
multiplication of heavy vehicle axles and road overloads are phenomena that are becoming increasingly important on the
road network of the WAEMU community.
These phenomena, although framed by standards, have an impact on the durability
of pavements. In this manuscript it is a question of evaluating the life of the
road under the effect of traffic of these multi-axle vehicles and the different
tolerances of overloads observed on the road network. To achieve this, a modeling of a bituminous pavement was made with the software ALIZE Lcpc Version 231 based on the principle of the French
method of sizing. An inventory of multi-axle heavy goods vehicles was also made
on a road with a weighing station. This traffic counting made it possible to classify heavy goods vehicles into three
categories, namely: 1) trucks, 2) dual-wheeled semi-trailers and 3) single-wheeled semi-trailers. The results obtained show that in terms of aggressiveness, single-wheeled
semi-trailers are the most aggressive, followed by heavy goods
vehicles in the category of trucks with more than five axles and semi-trailers
with dual wheels with more than seven axles. The durability of the road depends
on the aggressiveness of heavy goods vehicles, it was found that the tolerance threshold for
overloads of 15% of the total permissible rolling weight (TARW) or the total
permissible laden weight (TALW) currently granted in the Community area needs
to be reviewed. For durable road surfaces, this tolerance may only be allowed
for heavy goods vehicles of type P11, P12 and P13. The 5% tolerance can be
applied to all vehicles except heavy goods vehicles with single wheels.
Share and Cite:
Kobori, K. , Gnabahou, D. , Imbga, K. and Sandwidi, A. (2023) Impact of Multi-Axle Vehicles and Road Overloads on the Durability of Asphalt Pavements.
Open Journal of Civil Engineering,
13, 237-251. doi:
10.4236/ojce.2023.132018.
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