Journals Information
Civil Engineering and Architecture Vol. 11(6), pp. 3775 - 3788
DOI: 10.13189/cea.2023.110639
Reprint (PDF) (1602Kb)
Comparing between the Flexible Pavement Design Methods Based on Durability and Cost-Effectiveness
Salma Al Maghawri 1,*, Osama Ragab Ibrahim 1,2, Yara Gamil 1, Ruqaya Al Sheikh 1
1 Department of Civil Engineering, Faculty of Engineering, Sohar University, Oman
2 Department of Hydraulic and Irrigation Structures, Civil Engineering, Faculty of Engineering, Alexandria University, Egypt
ABSTRACT
Current flexible pavements experience different types of failure due to insufficient thickness. This is a result of the variability of the available design methods for flexible pavements along with the limitation of each method due to it being suitable for the country in which it was developed. As a result, there is a need to conduct a comparative study between the various design methods to achieve the most suitable design that combines being economic and durable during the intended lifetime of the pavement. In this study, a comparative study between three design methods was conducted: Group Index (GI), California Bearing Ratio (CBR), and American Association of State Highway Officials (AASHTO) to achieve the best design of a roadway. Input data was collected manually for each design method. After the design, the performance of each pavement was analysed using mechanistic empirical methods done by 3D move analysis software to predict failures like rutting and cracking. This research aims to compare various design methods in terms of cost-effectiveness and durability, then provide modification of the output designs as per project requirements to overcome the limitations of each method. Results show that the GI method provided the most economical section but experienced more failure, while the AASHTO method provided the least economical section with the highest durability. Pavement performance analysis showed that modification is required to the subgrade layer to prevent subgrade rutting.
KEYWORDS
Flexible Pavement, AASHTO, Comparative Design, Mechanistic Empirical, Subgrade
Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Salma Al Maghawri , Osama Ragab Ibrahim , Yara Gamil , Ruqaya Al Sheikh , "Comparing between the Flexible Pavement Design Methods Based on Durability and Cost-Effectiveness," Civil Engineering and Architecture, Vol. 11, No. 6, pp. 3775 - 3788, 2023. DOI: 10.13189/cea.2023.110639.
(b). APA Format:
Salma Al Maghawri , Osama Ragab Ibrahim , Yara Gamil , Ruqaya Al Sheikh (2023). Comparing between the Flexible Pavement Design Methods Based on Durability and Cost-Effectiveness. Civil Engineering and Architecture, 11(6), 3775 - 3788. DOI: 10.13189/cea.2023.110639.