Journal
JOURNAL OF MICROENCAPSULATION
Volume 35, Issue 7-8, Pages 635-642Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02652048.2018.1559248
Keywords
Organic phase change material; microcapsule; asphalt pavement; low-temperature disaster; polypropylene
Funding
- National Natural Science Foundation of China [51622805, U1633116]
- opening fund for the subject of Transportation Engineering in Tongji University [2016J012306]
- Research Project of Yunan Department of Transportation [2016(A) 16]
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Low-temperature phase change material (PCM) is a material that stores additional heat at elevated temperatures and releases energy when the temperature is below the limit. A way to solve the low-temperature disaster of asphalt pavement is desired to be developed. In this article, a two-component organic low-temperature PCM was encapsulated by melamine-urea-formaldehyde resin and finally reinforced with polypropylene. The reinforced PCM microcapsules were mixed with 70# SBS (Styrene-Butadiene-Styrene) modified asphalt in SMA-10 (Stone Matrix Asphalt-10) to form aggregates. The results showed that after adding 6.0% (w/w) reinforced PCM microcapsules, there was a significant delay compared to a blank sample with a maximum temperature difference of 1.8 degrees C when the temperature dropped to 0 degrees C, which proved that this method has a good potential in resisting low-temperature disasters on asphalt pavement and deserves further improvement.
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