Products

Products derived from LTPP have been flowing to State transportation departments and other segments of the highway community since the early years of the program. Initially, these were methods, guidelines, and procedures for standardized testing and performance data collection. While these procedures were developed to meet LTPP data collection needs, their conversion into standard practices has been an AASHTO activity. Some products and benefits from LTPP already implemented in practice are based on best-practice construction specifications developed for the pavement experiments requiring new construction, while other products were developed from early analysis of LTPP data.

Throughout the life of the LTPP program, significant efforts have been made to improve data accessibility for all potential users. At least once a year for more than a decade, standard data releases containing data from the LTPP database have been made available on CDs and/or DVDs. Since March 2003, DataPave Online has also made available a significant portion of the data contained in the LTPP database via the Web at http://www.ltpp-products.com.

LTPP's products and software available at LTPP Products Online (http://www.ltpp-products.com) include:

• DataPave
  A web application that presents LTPP data in an easy-to-use way.
• LTPPBind
  A Windows-based software program that provides users with the ability to apply regional temperature and traffic conditions to select Superpave performance-grade asphalt binders.
• Rigid Pavement Design Software
  A Microsoft Excel spreadsheet that automates the design and analysis procedures for improved guidelines for PCC pavements as published in the 1998 Supplement to the AASHTO Guide for the Design of Pavement Structures, Part II - Rigid Pavement Design & Rigid Pavement Joint Design.

Other LTPP products are available at the links below:

• Distress Identification Manual for the Long-Term Pavement Performance Program (Fourth Revised Edition) - Manual developed to provide a consistent, uniform basis for collecting distress data on the LTPP program. The manual provides a common language for describing cracks, potholes, rutting spalling, and other pavement distresses.
• FWD Calibration
  New information and video that present the LTPP Falling-Weight Deflectometer (FWD) calibration procedure.
• LTPP Product List
• Pavement Manuals of Practice
  A series of four manuals that provide the latest information on pavement maintenance and repair.
• Product Briefs
  Overviews of LTPP product offerings, including technical background information, along with key features and product benefits.
• Product Plan
• Product Information Sheet (Napkin)
  A web-based application that provides users with the ability to check basic product information such as introduced date, supervising ETG, product phase (status), expected completion date, budget, and to link to the product's originating project(s).
• Resilient Modulus
  Research report and videotapes that explain the how and why of LTPP's revised unbound resilient modulus laboratory tests and procedures.