PMSS Project Details

Project ID:	FHWA-PROJ-10-0011
Project Name:	Full-Scale Aggregate Base Design and Construction
Status:	Active
Contact:	Last Name: Gibson First Name: Nelson H Telephone: 202-493-3073 E-mail: nelson.gibson@dot.gov
Organization:	Federal Highway Administration - Turner-Fairbank Highway Research Center (TFHRC)
Office:	Office of Infrastructure Research and Development
Team:	Pavement Materials Team
Roadmap/Focus area(s):	Infrastructure Research and Technology Strategic Plan and Roadmap
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.
Laboratories:	Pavement Testing Facility
Start Date:	March 1, 2010
End Date:	December 31, 2012
Funding Amount:	$150,000.00
FHWA Program Name:	Innovative Pavement Research and Deployment
Goals:	To evaluate the viability of the inverted pavement design to provide long-term performance with local materials.
Project Type:	Onsite and Offsite
Background Information:	Data not yet available
Test Methodology:	Data not yet available
Other Information:	Data not yet available
Partners:	Virginia Department of Transportation; Role(s): Other stakeholder
More Information URL(s):
Fieldtest:	Data not yet available
Expected Benefits:	Successful inverted pavements require both the performance and costs to be acceptable. Inverted pavements require more crushed stone, additional construction effort, and potentially less asphalt concrete, which reduces the overall pavement cost. A successful research project will lead to further steps towards implementation in the form of guidance for agency specifications or contractor practices.
Deliverables:	Name: Materials, construction, and design guidelines for alternative inverted pavement structure. Product Type(s): Research report, Data, Draft standard, specifications, or guidelines, Techbrief 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). Audiences: State highway agencies Secondary Audiences:
Related URL(s):
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.
FHWA Topics:	Roads and Bridges--Pavement and Materials Roads and Bridges--Design
TRT Terms:	Aggregates Pavement Design Infrastructure Pavements Research Materials Construction
FHWA Disciplines:	Pavement and Materials
Subject Areas:	Design Pavements Research