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Federal Highway Administration > Publications > Focus > September 1997 > Tech Briefs Keep Engineers Current on New Findings and Products from the LTPP Program
September 1997Publication Number: FHWA-SA-97-027

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Tech Briefs Keep Engineers Current on New Findings and Products from the LTPP Program

Now that the long-term pavement performance (LTPP) program is at its midpoint, the 20-year study is beginning to yield new information on asphalt and portland cement concrete pavements, as well as new products for use in pavement design, maintenance, and research. To help engineers, researchers, and others stay abreast of the new information and products, the Federal Highway Administration (FHWA) is rolling out a series of summaries of recent LTPP reports. The summaries, known as Tech Briefs, concisely report the objectives and key findings of the research and relate how these findings will affect current practice. They include descriptions of new test methods, design guidelines, or other products that have resulted from the research project.

For practitioners or researchers who need more details, each Tech Brief provides information on how to order the full report and how to contact the individuals who conducted the research.

The Tech Briefs primarily summarize research done as part of the LTPP data analysis projects being conducted under contract to FHWA, but they also cover related research by State highway agencies, engineering graduate students, and others.

The Tech Briefs will be distributed to senior-level pavement engineers, materials engineers, and pavement management engineers at State highway agencies, as well as contractors, LTPP coordinators, libraries in highway agencies, and others.

Once the Tech Briefs are available, they will be announced in Focus. To be added to the Tech Briefs mailing list, contact Mary Taylor-Mattox at FHWA (phone: 703-285-2124; fax: 703-285-2767; email:

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Updated: 02/20/2015

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