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Dynamic Modulus Test-Laboratory Investigation and Future Implementation in the State of Washington.
| 题名： | Dynamic Modulus Test-Laboratory Investigation and Future Implementation in the State of Washington. |
| 作者： | tashman, l. elangovan, m. a. |
| 关键词： | predicted distress, aggregate gradation, mechanical properties, sensitivity, statistical analysis, master curves |
| 摘要： | The database of dynamic modulus values for typical Superpave mixes widely used in the state of Washington was developed and used to investigate the sensitivity of the dynamic modulus to aggregate gradation. Seven JMF mixes were selected for the study. Percent passing sieve no. 200 of these mixes were changed by + or - 2% to prepare additional mixes referred to as 'modified mixes'. Statistical analysis showed that using different JMF mixes significantly affected the dynamic modulus. This was not the case when modifying the MJF by changing the percent passing no. 200. A simple evaluation of the prediction accuracy of the 2002 Mechanistic-Empirical Pavement Design Guide (MEPDG) was conducted in which the measured dynamic modulus was used as a key input parameter to predict pavement distresses. Level 1 and Level 3 predictions of rutting, longitudinal cracking, alligator cracking, and IRI were compared with the field performance data. / NOTE: Research rept. / Supplementary Notes: Sponsored by Washington State Dept. of Transportation, Olympia. and Federal Highway Administration, Olympia, WA. Washington Div. / 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： | u0823；51p |
| 报告类型： | 科技报告 |
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