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原文传递 Guidance, Parameters, and Recommendations for Rubblized Pavements.

题名：	Guidance, Parameters, and Recommendations for Rubblized Pavements.
作者：	von quintus, h. l. rao, c. mallela, j. aho, b.
关键词：	design criteria, concrete slabs, hot mix asphalt, road construction, testing, pavement overlays, rubble, rehabilitation, modulus of elasticity, performance evaluation, wisconsin, research project, recommendations
摘要：	The objectives of this research project was to document historical information and data on the rubblization projects that have been built in Wisconsin, and provide guidelines and recommendations for the selection, design, testing, and construction of rubblized PCC slabs, and determine the conditions for which rubblizing PCC pavements is a feasible rehabilitation strategy. Appendix A summarizes the design criteria and construction suggestions for rubblized projects and Appendix B includes the catalog of rubblized projects built in Wisconsin between 1990 to 2003. The research study included a review of existing literature and an analysis of rubblization projects built in Wisconsin to determine the performance characteristics and expected service life of rubblized PCC projects. The performance analyses included a comparison of the condition of HMA overlays placed over intact and rubblized PCC pavements, and an extrapolation of the expected service life of the rubblized PCC pavements using empirical-mechanistic type relationships. The average elastic modulus of the rubblized PCC layer was estimated to be 65,000 psi and was based on matching the predicted to observed pavement performance of the Wisconsin rubblized projects. An AASHTO structural layer coefficient of 0.22 was also determined and recommended for use in designing rubblized projects in Wisconsin. Based on these performance analyses, the rubblized PCC projects are expected to equal or exceed the design life of this rehabilitation strategy. This rehabilitation strategy is recommended for continued use in Wisconsin under those conditions conducive for rubblization. / NOTE: Final rept. / Supplementary Notes: See also Appendices, PB2007-106575. Sponsored by Wisconsin Dept. of Transportation, Madison. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
总页数：	u0711；87p
报告类型：	科技报告