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Next Generation Permanent Deformation Models for the Prediction of Rutting in Subgrade Materials for Pavement Design

Project Information

Project ID: 
FHWA-PROJ-12-0002
Project Status: 
Active
Start Date: 
Sunday, January 1, 2012
End Date: 
Wednesday, December 31, 2014
FHWA Program: 
Infrastructure
FHWA Subprogram: 
Pavement and Materials
FHWA Topics: 
Research/Technologies--Turner-Fairbank Highway Research Center (TFHRC)
TRT Terms: 
Pavement Performance; Deformation; Pavement Design; Infrastructure; Research; Empirical Methods; Pavements
FHWA Discipline: 
Geotechnical, Pavement and Materials
TRB Subject Area: 
Pavements, Geotechnology

Contact Information

First Name: 
Nadarajah (Siva)
Last Name: 
Sivaneswaran
Telephone: 
(202) 493-3147
Team: 
Infrastructure Analysis and Construction Team
Office:
Office of Infrastructure Research and Development
Office Code: 
HRDI-20

Project Details

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).

Deliverables

Deliverable Name: 
Final report documenting the entire study's efforts and findings
Deliverable Type: 
Research report or guidelines
Deliverable Description: 
The final report will document the entire study effort, empirical models for subgrade soils tested consistent with Mechanistic-Empirical Pavement Design Guide (MEPDG), and fundamentally based subgrade permanent deformation models validated using SPR-2(208) accelerated pavement testing performance data for use in next generation pavement design.