Use of Microencapsulated Phase Change Materials in Bitumen to Mitigate the Thermal Distresses in Asphalt Pavements

Kakar, Muhammad Rafiq Khan; Refaa, Zakariaa; Worlitschek, Jörg; Stamatiou, Anastasia; Partl, Manfred N.; Bueno, Moises (2018). Use of Microencapsulated Phase Change Materials in Bitumen to Mitigate the Thermal Distresses in Asphalt Pavements In: RILEM 252-CMB-Symposium on Chemo Mechanical Characterization of Bituminous Materials. RILEM Bookseries: Vol. 20 (pp. 129-135). Cham: Springer 10.1007/978-3-030-00476-7_21

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In asphalt pavements, the temperature variations due to extreme weather conditions are mainly responsible for thermal distresses. Cracking and rutting are the main types of damages in asphalt mixtures from extreme low and high temperatures. Recently, in building construction, phase change materials (PCM) are efficiently used as a source of thermal energy preservation by storing thermal energy in a latent form. The use of microencapsulated phase change material (μPCM) enables thermal energy storage and release inside bitumen. The PCM’s crystallization/melting temperature define the temperature at which thermal energy can be stored/released. In this study, a low temperature μPCM was incorporated in bitumen and its rheological and thermal properties were evaluated using dynamic shear rheometer (DSR) and differential scanning calorimeter (DSC) respectively. It was observed that upon cooling, the addition of 25% μPCM by mass of bitumen crystallizes and releases the stored thermal energy. The surface temperature variations captured by means of thermal infrared camera illustrate that compared to controlled specimen, in modified bitumen a delaying effect of cooling was found during the crystallization temperature of μPCM.

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 School of Architecture, Wood and Civil Engineering > Institut for Building Materials and Biobased Products IBBM > Mobility and Transport Infrastructure group FGMV
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:	978-3-030-00475-0
Series:	RILEM Bookseries
Publisher:	Springer
Language:	English
Submitter:	Muhammad Rafiq Khan Kakar
Date Deposited:	23 Mar 2022 11:21
Last Modified:	08 Apr 2022 08:37
Publisher DOI:	10.1007/978-3-030-00476-7_21
ARBOR DOI:	10.24451/arbor.16570
URI:	https://arbor.bfh.ch/id/eprint/16570