原文传递
DYNAMIC MODULUS OF ASPHALT CONCRETE WITH A HOLLOW CYLINDER TENSILE TESTER.
| 题名： | DYNAMIC MODULUS OF ASPHALT CONCRETE WITH A HOLLOW CYLINDER TENSILE TESTER. |
| 作者： | Buttlar-WG; Bauer-JM; Sherman-DS |
| 关键词： | American-Association-of-State-Highway-and-Transp-Officials; Asphalt-concrete; Bituminous-mixtures; Compliance-; Creep-; Dynamic-modulus-of-elasticity; Fatigue-cracking; Hollow-cylinder-tensile-tester; Loads-; National-Cooperative-Highway-Research-Program; Pavement-cracking; Pavement-design; Temperature-; Tensile-strength; Thermal-cracking |
| 摘要： | A hollow cylinder tensile tester (HCT) has recently been shown to be a suitable surrogate test device for the Superpave (Registered trademark) indirect tension test. The feasibility of using the HCT to obtain the dynamic modulus of asphalt concrete was explored. Previous studies have shown the dynamic modulus of asphalt concrete in tension and compression to be similar at low temperatures and high loading frequencies and that minor differences can be expected at higher temperatures and lower loading frequencies. Here, the HCT device compared favorably with dynamic modulus measurements obtained with uniaxial compression testing apparatus at 0 deg C and 20 deg C. In addition, test results were found to be in reasonable agreement with the Witczak dynamic modulus predictive equation. The ability to simply and rapidly measure the creep compliance, tensile strength, and dynamic modulus of bituminous paving mixtures over a range of temperatures and loading conditions makes the HCT device a useful general-purpose mixture analysis tool. It appears that this portable device may serve as a practical method to satisfy testing requirements for high reliability (Level 1) pavement designs in the forthcoming American Association of State Highway and Transportation Officials (AASHTO) 2002 design guide being developed under National Cooperative Highway Research Program (NCHRP) Project 1-37A for the mitigation of both fatigue cracking and thermal cracking. However, a broader experimental program, including tests at higher temperatures and a broader range of test frequencies, is needed to fully validate the compatibility of HCT measurements with NCHRP Project 1-37A models. |
| 总页数： | Transportation Research Record. 2002. (1789) pp183-190 (3 Phot., 2 Fig., 4 Tab., 17 Ref.) |
| 报告类型： | 科技报告 |
相关文献
- HOLLOW-CYLINDER TENSILE TESTER FOR ASPHALTIC PAVING MIXTURES.
- Comparison between Various Laboratory Mixture Permanent Deformation (Rutting) Test Equipment Using Ohio Mixes; Final rept
- MICROMECHANICAL ANALYSIS OF VISCOELASTIC PROPERTIES OF ASPHALT CONCRETES.
- TENSILE VERSUS COMPRESSIVE MODULI OF ASPHALT CONCRETE.
- Precision of the Dynamic Modulus and Flow Number Tests Conducted with the Asphalt Mixture Performance Tester. National Cooperative Highway Research Program (NCHRP) Report 702
- Long-Term Pavement Performance. Protocol P07: Test Method for Determining the Creep Compliance, Resilient Modulus and Strength of Asphalt Materials Using the Indirect Tensile Test Device. Version 1.1.
检索历史
应用推荐
