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Washington, DC 20590
202-366-4000


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Research and Development (R&D) Project Sites

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Project Information
Project ID:   FHWA-PROJ-12-0002
Project Name:   Next Generation Permanent Deformation Models for the Prediction of Rutting in Subgrade Materials for Pavement Design
Project Status:   Active
Start Date:  January 1, 2012
End Date:  December 31, 2014
Contact Information
Last Name:  Sivaneswaran
First Name:  Nadarajah (Siva)
Telephone:  202-493-3147
E-mail:  nadarajah.sivaneswaran@dot.gov
Office:   Office of Infrastructure Research and Development
Team:   Infrastructure Analysis and Construction Team [HRDI-20]
Program:   Innovative Pavement Research and Deployment
Project detail
Roadmap/Focus area(s):   Infrastructure Research and Technology Strategic Plan and Roadmap
Project Description:   This project will build upon the Transportation Pooled Fund (TPF) State Planning and Research (SPR)-2(208) “Pavement Subgrade Performance Study” experimental phase, develop empirical models for permanent deformation in subgrade soils consistent and for use with the National Cooperative Highway Research Program (NCHRP) 1-37A Mechanistic-Empirical Pavement Design Guide (MEPDG), and develop more fundamentally based mechanistic models for advancing the science of pavement design.
Goals:  
Building upon the Transportation Pooled Fund (TPF) State Planning and Research (SPR)-2(208) “Pavement Subgrade Performance Study,” this effort will:
 
(1) Develop empirical models for permanent deformation in subgrade soils consistent and for use with the National Cooperative Highway Research Program (NCHRP) 1-37A Mechanistic-Empirical Pavement Design Guide (MEPDG), and the associated model parameters for the subgrade soils tested in SPR-2(208), and validate them using the performance data collected.
 
(2)   Develop fundamentally based mechanistic models for the determination of permanent deformation in subgrade soils under repeated traffic loading, based on the concepts of critical state soil mechanics and soil properties used in modeling soil behavior under cyclic and transient loading. Validate the models through finite element modeling and the performance data collected during the experimental phase of SPR-2(208).
Product Type:   Research report
Test Methodology:   Empirical modeling, theoretical model development, numerical modeling and laboratory testing.
Expected Benefits:   The expected benefit is empirical models for subgrade soil types tested for use with Mechanistic-Empirical Pavement Design Guide (MEPDG), and fundamentally sound subgrade permanent deformation models for the next generation pavement design.
FHWA Topics:   Research/Technologies--Turner-Fairbank Highway Research Center (TFHRC)
TRT Terms:   Pavement Performance
Deformation
Pavement Design
Infrastructure
Research
Empirical Methods
Pavements
FHWA Disciplines:   Geotechnical
Pavement and Materials
Subject Areas:   Pavements
Geotechnology

 

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Turner-Fairbank Highway Research Center | 6300 Georgetown Pike | McLean, VA | 22101