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LTPPBind Online
LTPPBind Online is a web-based tool to help highway agencies select the asphalt binder Performance Grade (PG) for a particular site based on the AASHTO M320-10 standard. Algorithms for high and low temperature are the same as LTPPBind 3.0/3.1 release. LTPPBind Online allows use of MERRA climatic data, LTPP climatic data, or user data for asphalt binder grade calculations. For further details, please see the LTPPBind Online Product Brief.
Disclaimer: LTPPBind Online provides a tool for highway agencies to investigate asphalt binder Performance Grade (PG) ratings in accordance with AASHTO M320-10 and AASHTO M332-14 standards. Climate input options include MERRA-2, LTPP sites, or user defined data. The newest update to LTPPBind performed in September 2018 includes a change to the degree-day over 10 degree C computation that uses the maximum air temperature for each day, and restricts this computation for weather data from the months of April to September of each year. LTPP has determined that this is the most appropriate computation method that the empirical models implemented in LTPPBind 3.1 used for high temperature PG binder grades. Support for all LTPPBind changes are available through the LTPP Customer Services Support Center. More information on updates to the current version of LTPPBind are available, including links to download desktop versions of the software. A summary of the changes made to the LTPPBind desktop software, LTPPBind documentation, or the LTPPBind Online tool since 2016 is available in a related technical note. Instructions on using this tool are available in the Long-Term Pavement Performance Bind Online User Guide. MERRA data used by LTPP reflects the most recent NASA data set which changed in 2016. Projects saved prior to July 2016 and reopened after that date will typically see a change in data values and grid IDs. More information can be found in the MERRA Data Comparison Memorandum. |
