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Fatigue Performance of IDOT Mixtures.
| 题名： | Fatigue Performance of IDOT Mixtures. |
| 作者： | carpenter, s. h. |
| 关键词： | dynamic modulus, bending stiffness, mechanical properties, design, flexible pavements, testing, superpave, models, mixtures |
| 摘要： | The fatigue characteristics of an hot mix asphalt (HMA) mixture are an integral element of the structural design of a pavement containing asphalt concrete. There are a number of models that have been developed to express the fatigue behavior of an HMA as a function of mixture composition. These models are presented and the shortcomings are discussed relative to the IDOT tensile strain model of the form K1(1/e)(sup K2). Two sets of IDOT mixtures were investigated for this study: (1) The first was a general, pre-Superpave selection of IDOT mixtures; and (2) The second was a set from the Extended Life Hot Mix Asphalt Pavement ELHMAP project, representing Superpave mixtures and rich bottom binder (RBB) mixtures. The fatigue model coefficients of these tests are examined and suggestions relative to acceptable coefficients for IDOT use are made, specifically: (A) K2 = 3.5 to include all mixtures tested; (B) K2 = 4.0 to include nearly ninety percent of mixtures tested; and (C) K2 = 4.5 for the average value of mixtures tested. / NOTE: Project rept, 2002-2006. / Supplementary Notes: Sponsored by Illinois State Dept. of Transportation, Springfield. Bureau of Materials and Physical Research. and Federal Highway Administration, Washington, DC. / Availability Note: Available on CD-ROM and in color paper copy only. 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： | u0823；50p |
| 报告类型： | 科技报告 |
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