Impregnation of Lightweight Aggregate Particles with Phase Change Material for Its Use in Asphalt Mixtures

Kakar, Muhammad Rafiq Khan; Refaa, Zakariaa; Worlitschek, Jörg; Stamatiou, Anastasia; Partl, Manfred N.; Bueno, Moises (2019). Impregnation of Lightweight Aggregate Particles with Phase Change Material for Its Use in Asphalt Mixtures In: ISAP APE 2019: Proceedings of the 5th International Symposium on Asphalt Pavements & Environment (APE). Lecture Notes in Civil Engineering: Vol. 48 (pp. 337-345). Cham: Springer 10.1007/978-3-030-29779-4_33

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Phase change materials (PCM) are widely investigated nowadays for building applications due to their ability of passive heating and cooling, thus regulating indoor temperature. Recently, PCMs have been studied also as additives of asphalt binders for road applications. However, PCM modifications of asphalt binder limits the effect due to the low amount of binder (5–6%wt.) used in asphalt mixtures. In order to increase the PCM content in a mixture an effective option may consist of modifying aggregate particles as main mixture component (94–95%wt.). In this research, foam glass and burnt expanded clay (agriculture beads) particles are impregnated with PCM (Tetradecane, Tmelt = 6 °C) and investigated for relatively low temperature applications. PCM impregnation together with the protective coating and sealing of these PCM soaked lightweight aggregate (LWA) particles are performed in the lab. The particles are coated using epoxy adhesives combined with Ordinary Portland Cement (OPC). The results reveal that porous lightweight particles are indeed promising PCM carriers and comparatively easy to impregnate with liquid PCM. However, the choice of coating technique depends on the final application as hot, warm or cold mix asphalt.

Item Type:	Book Section (Book Chapter)
Division/Institute:	School of Architecture, Wood and Civil Engineering School of Architecture, Wood and Civil Engineering > Institute for Urban Development and Infrastructure > Transport Infrastructure
Name:	Kakar, Muhammad Rafiq Khan; Refaa, Zakariaa; Worlitschek, Jörg; Stamatiou, Anastasia; Partl, Manfred N. and Bueno, Moises
Subjects:	T Technology > TE Highway engineering. Roads and pavements
ISBN:	978-3-030-29778-7
Series:	Lecture Notes in Civil Engineering
Publisher:	Springer
Language:	English
Submitter:	Muhammad Rafiq Khan Kakar
Date Deposited:	22 Mar 2022 14:43
Last Modified:	08 Apr 2022 08:37
Publisher DOI:	10.1007/978-3-030-29779-4_33
Uncontrolled Keywords:	Tetradecane, Low temperature distresses, Specific heat capacity, Asphalt pavement
ARBOR DOI:	10.24451/arbor.16567
URI:	https://arbor.bfh.ch/id/eprint/16567