Publication Number: FHWA-SA-97-028
Date: October 1997

Turn to the Tech Briefs for the Latest LTPP Research Findings

Engineers, researchers, and others trying to keep up with new information and products from the long-term pavement performance (LTPP) program can now turn to Tech Briefs, a new series of summaries of recent LTPP reports. Each brief provides a concise summary of the findings of a recent research project; outlines the impact on current practices; and describes test methods, design guidelines, and other products that may result from the research.

The following Tech Briefs have recently been published:

• LTPP Data Analysis, Validation of Guidelines for k-Value Selection and Concrete Pavement Performance Prediction (Publication No. FHWA-RD-97-035)
• Pavement Treatment Effectiveness, 1995 SPS-3 and SPS-4 Site Evaluation, National Report (Publication No. FHWA-RD-97-029)
• Improving Accuracy of Unbound Resilient Modulus Testing (Publication No. FHWA-RD-97-090)
• Improved Guidelines for Users of the 1993 AASHTO Flexible Pavement Design Procedures (Publication No. FHWA-RD-97-091)
• LTPP Data Analysis: Frequently Asked Questions About Joint Faulting with Answers from LTPP (Publication No. FHWA-RD-97-101)
• Advanced Methods for Using FWD Deflection-Time Data to Predict Pavement Performance (FHWA-RD-97-093)

A limited number of copies of the Tech Briefs are available from FHWA's Research and Technology Report Center (phone: 301-577-0906; fax: 301-577-1421). The Tech Briefs are also available from the National Technical Information Service (phone: 703-487-4650 or 800-553-6847; fax: 703-321-8547) and from the LTPP program's home page: www.fhwa.dot.gov/pavement/ltpp/index.cfm.

The Tech Briefs are intended for 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.

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