Analysis of the Impact of Overloading for Trucks on the Design Life of Flexible Pavement

Premature deterioration of flexible pavements due to increased truck axle loads poses a significant challenge on Iraqi roadways. This study focuses on managing the properties of the wearing layer to achieve a better balance between the damage ratio and the longest design life at the expense of the b...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2024-08, Vol.1374 (1), p.12089
Main Authors: Al-Janabi, Alia Jasem, Obaid, Hayder Abbas
Format: Article
Language:English
Subjects:
Asphalt
Cargo containers
Damage assessment
Design optimization
Fatigue cracking
Fatigue failure
Flexible pavements
Fracture mechanics
Heavy duty trucks
Impact analysis
KENPAVE Software
Life assessment
Load equivalency factor
Overloading
Overloading Phenomena
Pavement design
Pavement deterioration
Remaining Service Life
Shafts (machine elements)
Structural behavior
Traffic
Trucks
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Summary:Premature deterioration of flexible pavements due to increased truck axle loads poses a significant challenge on Iraqi roadways. This study focuses on managing the properties of the wearing layer to achieve a better balance between the damage ratio and the longest design life at the expense of the binder layer’s properties. The pavement performance and design life assessment, considering fatigue cracking and rutting damage, was conducted using KENLAYER software, which employs Asphalt Institute design models and formulas to compute stresses and strains in the asphaltic pavement. The overload rate was also calculated in the range (from 2 to 40%). This rate regardless of overloading rate, the majority of trucks exceeded their legal limit except for some kinds which are [Type 2(T), Type 2(F), Type 3(T), Type 4(M), Type2-S2 (F), Type2-S3(F), Type2-S3(T) Type 3-S2(F) and Type 3-S3(T)] where were used to transport a specified material such as water, fuel, food and shipping container therefore, the overloading rate should be considered in the design and measured carefully according to truck type cargo. This study emphasizes the importance of considering heavy truck axle loads and their effects on pavement deterioration. The findings contribute to understanding the structural behavior of pavements subjected to overloading, providing insights for optimizing pavement design and improving the longevity of flexible pavements under challenging traffic conditions.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/1374/1/012089