Selection and preliminary evaluation of laboratory cracking tests for routine asphalt mix designs
| Autor: | Tom Scullion, David Newcomb, Soohyok Im, Sheng Hu, Fujie Zhou |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
050210 logistics & transportation
Engineering Fatigue cracking business.industry 05 social sciences 0211 other engineering and technologies 02 engineering and technology Overlay Mix design Cracking Asphalt Transverse cracking 021105 building & construction 0502 economics and business National Cooperative Highway Research Program Forensic engineering business Civil and Structural Engineering |
| Zdroj: | Road Materials and Pavement Design. 18:62-86 |
| ISSN: | 2164-7402 1468-0629 |
| DOI: | 10.1080/14680629.2016.1266741 |
| Popis: | Cracking has become a primary mode of distress in recent years that frequently drives the need for rehabilitation of asphalt pavements. Meanwhile, asphalt mix designs are becoming more and more complex with the increasing uses of recycled materials, recycling agents, binder additives/modifiers, and multiple warm mix asphalt technologies. Thus, there is an urgent need to identify reliable cracking tests that can be used for routine mix design to eliminate brittle mixes. This paper critically reviewed cracking mechanisms and laboratory tests. A total of 12 cracking tests were discussed at a cracking test workshop held as part of the National Cooperative Highway Research Program Project 9-57. Seven cracking tests were selected for further laboratory evaluation and field validation. Four of the simpler cracking tests from the seven were evaluated in this paper, these being the Texas Overlay Test (OT), Disk-shaped Compact Tension (DCT) test, Semi-Circular Bend test from the Louisiana Transportation Research Ce... |
| Databáze: | OpenAIRE |
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