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原文传递 Structural Factors of Jointed Plain Concrete Pavements: SPS-2. Initial Evaluation and Analysis. Final rept. (draft) Oct 99-Feb 00.

题名：	Structural Factors of Jointed Plain Concrete Pavements: SPS-2. Initial Evaluation and Analysis. Final rept. (draft) Oct 99-Feb 00.
作者：	DARTER, M. I.; JIANG, Y. J.
关键词：	Joints-; Concrete-pavements.;Unsealed-; Spalling-; Faulting-; Roughness-; Deflections-; Analysis-methods; Performance-evaluation; Sealed-; Design-; Construction-.
摘要：	The Long-Term Pavement Performance (LTPP) program Specific Pavement Studies 2 (SPS-2) experiment, Strategic Study of Structural Factors of Jointed Plain Concrete Pavements (JPCP), is one of the key components of the LTPP program. The main objective of this experiment is to determine the relative influence and long-term effectiveness of JPCP design features and site conditions on performance. This report documents the first comprehensive review and evaluation of the SPS-2 experiment as it exists today. The evaluation concludes that many important and useful findings and results can be obtained from the SPS-2 sites despite several limitations resulting from not constructing a few of the test sites and a few construction deviations that occurred. In addition, some materials and traffic data are missing from some sites or sections. These data are important to achieving the objectives of the experiment, and are now being sought from the SPS-2 sites. Some interesting and important early trends have been identified that will be useful to the design and construction of JPCP, even though the oldest sections were no more than 7.5 years old at the time of this study. As time and traffic loadings accumulate at the SPS-2 sites, additional valuable performance data will be obtained. For example, the direct comparison of performance of designs with and without a permeable subdrainage layer is of intense interest to the State highway agencies. Future analyses of the performance data from the SPS-2 experiment will lead to new and important findings on the value of subdrainage, base type (treated and unbound), widened lanes, strength of concrete, subgrade soil, traffic level, and climate. These findings will lead to more reliable and cost-effective designs of JPCP. This report will be of interest to highway agency engineers involved in design, construction, and management of the pavements as well as future researchers who will analyze the performance of the SPS-2 sections.
报告类型：	科技报告