Mixed-Mode Fracture Characteristics of Cold Recycling Mixes with Emulsified Asphalt

Abstract:

In order to study the Mixed-Mode cracking behavior of cold recycling mixes with emulsified asphalt, the Arcan test configuration was chosen to perform the fracture characteristics of cold recycling mixes in five levels of Mixed-Mode (100, 75, 50, 25 and 0% Mode I) at three loading rates (1.0mm/min, 0.5mm/min, 0.1mm/min). The load and load-line displacement, peak load, crack angle and fracture energy were all used for further analysis. The process of cracking can be divided into three stages: the stage of crack arises, expand stage, and the brittle break stage; 0% Mode I has a significant difference from the others; the loading rates and levels of Mixed-Mode both have great influence on peak load; the higher level of Mode I usually gets lower crack angle; the fracture energy of 100% Mode I ranges from 168 J/m2 to 308 J/m2 and the specimen in 0.5mm/min has greater fracture energy.

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 1678-1683
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.1678
• Online since: October 2012
• Authors: Lei Gao, Fu Jian Ni, Mei Kun Yang
• Keywords: Arcan Test, Cold Recycling Mixes, Cracking, Mixed-Mode

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