Investigating bitumen’s direct interaction with Tetradecane as potential phase change material for low temperature applications

Kakar, Muhammad Rafiq Khan; Refaa, Zakariaa; Bueno, Moises; Worlitschek, Jörg; Stamatiou, Anastasia; Partl, Manfred N. (2020). Investigating bitumen’s direct interaction with Tetradecane as potential phase change material for low temperature applications Road Materials and Pavement Design, 21(8), pp. 2356-2363. Taylor & Francis 10.1080/14680629.2019.1601127

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Temperature is significantly influencing the behaviour of asphalt road surfaces. In case of cooling, asphalt pavements become stiffer eventually reaching a brittle state at which thermal cracking may occur. Phase change materials (PCM) respond to the environmental changes by actively altering their own properties by absorbing, storing, or releasing heat without changing their own temperature. Nevertheless, the application of phase change materials in thermoplastic materials, such as asphalt, has drawn attention only recently. The current study aims with an innovative approach for buffering and controlling extreme low temperatures in asphalt road surfaces by incorporating PCM as an additive for storing heat energy in a latent form. However, the results showed that the addition of Tetradecane as raw PCM material into the bitumen 10/20, 70/100 and 160/220 drastically increased penetration and decreased the conventional characteristics such as softening temperature as well as the complex modulus. The results of this study reveal that the direct interaction of Tetradecane with bitumen significantly affects the rheological properties of bitumen without storing heat energy in a latent form. Therefore, the choice of a suitable PCM and its incorporation in bitumen (e.g. microencapsulation, shape stabilisation) and possible leakage of protected PCM due to breakage of shell is very important in the context of bitumen modification.

Item Type:	Journal Article (Original Article)
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; Bueno, Moises; Worlitschek, Jörg; Stamatiou, Anastasia and Partl, Manfred N.
Subjects:	T Technology > TE Highway engineering. Roads and pavements
ISSN:	1468-0629
Publisher:	Taylor & Francis
Language:	English
Submitter:	Muhammad Rafiq Khan Kakar
Date Deposited:	22 Mar 2022 10:29
Last Modified:	08 Apr 2022 08:37
Publisher DOI:	10.1080/14680629.2019.1601127
ARBOR DOI:	10.24451/arbor.16550
URI:	https://arbor.bfh.ch/id/eprint/16550