Consideration of the permanent deformation of soils used in flexible pavement design

The decreasing supply of soils with geotechnical parameters suitable for pavement designs is a problem. To establish more efficient designs and adequate construction criteria, it is essential to understand the performance of materials. In this work, the permanent deformation (PD) of soils used in pa...

Full description

Saved in:
Bibliographic Details
Published in:Proceedings of the Institution of Civil Engineers. Geotechnical engineering 2022-08, Vol.175 (4), p.451-458
Main Authors: Cabral, Wendel Silva, de Araújo Barroso, Suelly Helena, de Almeida Torquato e Silva, Samuel
Format: Article
Language:English
Subjects:
Deformation
Design
Empirical analysis
Flexible pavements
Granular materials
Model testing
Pavement design
Prediction models
Procedures
Repeated loading
Soil
Soil layers
Soils
Test procedures
Thickness
Triaxial tests
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The decreasing supply of soils with geotechnical parameters suitable for pavement designs is a problem. To establish more efficient designs and adequate construction criteria, it is essential to understand the performance of materials. In this work, the permanent deformation (PD) of soils used in pavement layers was studied using prediction models of PD and modulus of resilience in addition to the design of pavement structures using mechanistic–empirical and empirical methods. The multistage repeated load triaxial test was used along with numerical analyses of stresses and displacements using the CAP3D program. The results showed that both the test procedure and the prediction models satisfactorily obtained the PD behaviour. Moreover, designs using the methods adopted resulted in distinct structures (i.e. different thicknesses of granular pavement layers). From the results of this study, it was concluded that both the model and the test procedure show significant potential for characterising and modelling the PD of granular materials.
ISSN:1353-2618
1751-8563
DOI:10.1680/jgeen.20.00055