PMSS Project Details

Project ID:	FHWA-PROJ-09-0011
Project Name:	Relationships Between Laboratory-Measured and Field-Derived Properties of Pavement Layers
Status:	Active
Contact:	Last Name: Jiang First Name: Yan (Jane) Telephone: 202-493-3149 E-mail: jane.jiang@dot.gov
Organization:	Federal Highway Administration - Turner-Fairbank Highway Research Center (TFHRC)
Office:	Office of Infrastructure Research and Development
Team:	Long-Term Pavement Performance Team
Roadmap/Focus area(s):	Comprehensive Utilization of National Transportation Data Performance Management Framework National Transportation Data Collection, Reporting, and Processing
Project Findings:	Data not yet available
Project Description:	It is well known that the layer moduli backcalculated from pavement deflection data (such as falling weight deflectometer) differ significantly from those obtained through laboratory resilient modulus testing. Research is needed to clearly explain the difference between the backcalculated layer moduli and the laboratory-measured properties, such as dynamic and resilient modulus of asphalt, elastic modulus of Portland cement concrete and cement stabilized material, and the resilient modulus of unbound materials. This project is intended to look at this issue in greater depth. The study should begin with the premise that backcalculated layer moduli and laboratory resilient moduli are different, and that it may not be possible to derive simple relationships to enable interchangeable use. This project will be considered successful if it yields either relationships enabling the interchangeable use of laboratory resilient modulus test data and backcalculated values, or a clear explanation of why it was not possible to derive such relationships.
Laboratories:	Not Applicable
Start Date:	April 1, 2009
End Date:	September 30, 2011
Funding Amount:	$400,000.00
FHWA Program Name:	Long-Term Pavement Performance
Goals:	Existing Pavement Condition Assessment
Project Type:	Offsite
Background Information:	Data not yet available
Test Methodology:	Data not yet available
Other Information:	Data not yet available
Partners:	Data not yet available
More Information URL(s):
Fieldtest:	Data not yet available
Expected Benefits:	Successful completion of this project potentially could provide information to pavement designers that may not be available without complicated and expensive laboratory testing. In some cases user agencies do not have the equipment necessary to perform the laboratory tests. There are times when the information could be obtained with a falling weight deflectometer in a timely fashion whereas laboratory testing, if possible, would require longer, or vice versa.
Deliverables:	Data not yet available
Related URL(s):
FHWA Topics:	Research/Technologies--Turner-Fairbank Highway Research Center (TFHRC)
TRT Terms:	Pavement, laboratory and field properties Subgrade (Pavements)
FHWA Disciplines:	Pavement and Materials
Subject Areas:	Pavements Highways Materials