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Full-Scale Aggregate Base Design and Construction

Project Information

Project ID: 
FHWA-PROJ-10-0011
Project Status: 
Active
Start Date: 
Monday, March 1, 2010
End Date: 
Monday, December 31, 2012
FHWA Program: 
Infrastructure
FHWA Subprogram: 
Pavement and Materials
FHWA Topics: 
Roads and Bridges--Pavement and Materials
TRT Terms: 
Aggregates; Pavement Design; Infrastructure; Pavements; Research; Materials; Construction
FHWA Discipline: 
Pavement and Materials
TRB Subject Area: 
Design, Pavements, Research

Contact Information

First Name: 
Jack
Last Name: 
Youtcheff
Telephone: 
(202) 493-3090
Email Address: 
Team: 
Infrastructure Materials Team
Office:
Office of Infrastructure Research and Development
Office Code: 
HRDI-10

Project Details

Project Description: 

This activity is aligned with the International Center for Aggregates Research and National Stone, Sand, and Gravel Association research priority list. The activity addresses the issue of using higher modulus, more dense bases construction for thinner asphalt concrete layers, thereby saving agencies money. This activity began to explore methods, which advance the state of the practice in granular base construction, material selection/specification, recycling and blending, and performance modeling. It has evolved with many attributes. Three main aspects are: Alternative construction techniques. Pavement design structural configuration. Improved materials characterization and modeling. Validation of the International Center for Aggregate Research cross-anisotropic resilient modulus material model for use in design and contributions to performance prediction is key.

Partners and Other Sponsor/Managing/Performing Organizations: 
Organization Role: 
Other
Project Findings: 

Initial findings must wait for the completion of construction to compare pavement primary responses from embedded instrumentation with those from external falling weight deflectometer. Ultimate findings must wait for the actual pavement performance to develop over time and accumulated traffic.

Deliverables

Deliverable Name: 
Materials, construction, and design guidelines for alternative inverted pavement structure
Deliverable Type: 
Research report or guidelines
Deliverable Description: 
Research report documenting the laboratory materials characterization, construction specifications, and results in particular for the alternative high density aggregate base and performance. Performance will be documented in two manners: primary responses (stress, strain, deformation), and distresses (rutting and fatigue cracking).