SHRP-LTPP Overview


Book Description

This report provides an overview of the first 5 years of the Strategic Highway Research Program Long-Term Pavement Performance (SHRP-LTPP) program. The background, LTPP history, activities and approaches, and decision-making processes of the program are detailed. Included are summaries of the studies initiated for general and specific pavement types, the characterization of pavement materials, monitoring activities, the LTPP database and Information Management System, data analysis, traffic data collection and analysis, as well as a summary of the contributions made by international participants. The general LTPP program is described and the expected results, products, and benefits are also outlined.




SPS-6


Book Description

Nineteen test sections were constructed by the Arizona Department of Transportation (ADOT) as part of Strategic Highway Research Program (SHRP) Specific Pavement Studies (SPS)-6 experiment. The SPS-6 program addresses the rehabilitation of jointed portland cement concrete pavement. The objective of the SPS-6 experiment is to develop improved performance prediction models to be used for determining the additional pavement life that can be expected from the application of a variety of JCP pavement rehabilitation methods, ranging from minimal to maximum investment. Construction of the 19 SPS-6 test sections was successfully incorporated in ADOT project IR-40-4(123) on I-40 at Flagstaff. Eight of the 19 test sections meet the basic SHRP requirements for the experiment. The additional 11 sections were designed by ADOT to evaluate features that are not included in the SHRP experiment design.




SHRP-LTPP Materials Characterization


Book Description

The Strategic Highway Research Program (SHRP) developed two materials characterization programs: one for field sampling, and another for laboratory testing. The SHRP field materials sampling and laboratory materials testing program encompassed all 50 states; 10 Canadian provinces; and Puerto Rico. This report documents the development and execution of these programs for both the General Pavement Studies (GPS) and the Specific Pavement Studies (SPS). These topics are described separately here, although they are linked inherently. Suggestions are given for future materials characterization within the Long-Term Pavement Performance program as it continues under the Federal Highway Administration.







Focus


Book Description




Assessment of Selected LTPP Material Data Tables and Development of Representative Test Tables


Book Description

This report documents an evaluation of selected Long Term Pavement Performance (LTPP) material data tables as of January 2000. Issues addressed include the availability, characteristics, and quality of the data in the selected tables. Anomalies in the data were identified and corrected where possible, and the "cleaned-out" data were used in developing representative data tables. Recommendations for adjustments in the current data collection process are also presented







Public Roads


Book Description