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STIFFNESS OF ASPHALT-AGGREGATE MIXES.
| 题名： | STIFFNESS OF ASPHALT-AGGREGATE MIXES. |
| 作者： | Tayebali-AA; Tsai-B; Monismith-CL |
| 关键词： | ASPHALT-CONCRETE; STIFFNESS-TESTS; AIR-VOIDS-CONTENT; DYNAMIC-CHARACTERISTICS; FLEXURAL-PROPERTIES; MODULUS-OF-RESILIENCE; SHEAR-PROPERTIES; AGGREGATES-; ESTIMATION-; ASPHALT-CONTENT; TEMPERATURE-; STRATEGIC-HIGHWAY-RESEARCH-PROGRAM |
| 摘要： | This report presents an evaluation of several test systems for stiffness determination of asphalt-aggregate mixes, including 1) axial resilient stiffness, 2) diametral resilient stiffness, 3) resilient and dynamic flexural stiffness, and 4) dynamic shear stiffness. All of the stiffness test systems were found to be sensitive to mix and test variables, especially to asphalt source, asphalt content, aggregate type, and air-void content. Temperature had the greatest effect on stiffness for axial, diametral, and flexural stiffnesses. On the basis of the data presented it is recommended that the use of diametral stiffness measurements be limited to temperatures equal to or less than 20 deg C. Models are presented to permit estimation of flexural stiffness (and loss-stiffness) from shear stiffness (and loss-stiffness in shear) at 20 deg C and 10 Hz frequency. |
| 总页数： | 1994/04. pp101 (Figs., Tabs., Refs., Apps.) |
| 报告类型： | 科技报告 |
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