In March 2017, the LTPP
program launched LTPPBind Online, a Web-based tool to help highway agencies select the most suitable binder performance grades for asphalt pavement at a particular site.
As opposed to the input variables for the New Road dataset the test temperature had to be excluded, since all performance data for the LTPP
dataset were only determined for a temperature of 20 [degrees]C.
database contains material, design and construction data including physical inventory data, material properties from in-situ and laboratory tests (LTPP
Evidence from the various kinds of data served to contextualise, describe and evaluate the outcomes of the 2007 LTPP
DataPave Online also provides user-friendly ways to explore, extract, and organize the LTPP
data for analysis.
For more information on the LTPP
program, contact Deborah Walker at 202-493-3068 (e-mail deborah.
An example of the role of LTPP
is its impact on what has been dubbed the "2002 Design Guide.
Since that time, more of the state-submitted LTPP
program data has passed quality screening and is now available.
To answer that challenge, the program launched a new Web-based data portal, LTPP
InfoPave[TM], in January 2014 at www.
In fact, the NCHRP used nationwide data from the LTPP
program, as well as data from Minnesota's MnROAD pavement test facility, to calibrate portions of the Mechanistic-Empirical Pavement Design Guide (now AASHTOWare[R] Pavement ME Design).
As noted in the report, one of the major challenges with calibration involves correlating data on pavement conditions collected as part of the LTPP
program with data contained in the State's pavement management systems.
FHWA recently unveiled the improved "LTPP
Products Online," with a fully updated version of LTPP