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Self-Healing Asphalt Pavement?

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February 13, 2013 in Outdoors


“The self healing phenomenon of asphalt mixtures is known for many years by road engineers. Bituminous materials are expected to repair themselves during hot summers and (long) rest periods. However, the underlying mechanism is not well understood, and a proper way to measure it is not available. Research questions are: what is the self healing phenomenon, how to measure it efficiently and how to upgrade it if possible. This research focuses on understanding the self healing mechanism of bituminous materials through material modifications, mechanical assessments and modelling simulations. Research was conducted to assess the self healing capability of bituminous materials from bitumen level to mixture level by mimicking the self healing process. The self healing phenomenon was directly related to a measurable crack. Three test methods were developed to study the self healing phenomenon at different levels.”




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