Study on preparation and thermal performance improvements of composite phase change material for asphalt steel bridge deck

Huachong Hu; Weixiang Chen; Xu Cai; Tao Xu; Hongzhi Cui; Xiaoqing Zhou; Jiayu Chen; Gongsheng Huang; Yongjun Sun

doi:10.1016/j.conbuildmat.2021.125255

Author(s)

Huachong Hu
Weixiang Chen
Xu Cai
Hongzhi Cui
Xiaoqing Zhou

Related Research Unit(s)

Department of Architecture and Civil Engineering

Detail(s)

Original language	English
Article number	125255
Journal / Publication	Construction and Building Materials
Volume	310
Online published	19 Oct 2021
Publication status	Published - 6 Dec 2021

Link(s)

DOI	DOI https://doi.org/10.1016/j.conbuildmat.2021.125255 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85117348654&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(4ffbc3fc-5d69-45d2-bf31-7a3a515ba6d7).html

Abstract

Phase change materials (PCMs) have the capabilities of thermal energy storage and temperature regulation. However, the application of PCMs in asphalt pavements is still limited due to the severe leakage and low thermal performance problem. In this research work, the phase change asphalt mixture (PCAM) with Polyethylene glycol/hydrophobic fumed silica composite phase change material (PEG/HFS) and Polyethylene glycol/SiO₂ composite phase change material (PEG/SiO₂) replacing mineral filler and fine aggregate was prepared and tested. The leakage experiment illustrated that the PEG/HFS with PEG content of 45% (wt) and PEG/SiO₂ with PEG content of 70% (wt) had good thermal exudation stability. The results of XRD and FTIR showed that the preparation process of composite phase change materials (CPCMs) was a pure physical mixing process without chemical reactions. In addition, based on the results of the indoor radiation test, Marshall test, and rutting test, we found that when mineral filler and fine aggregate were replaced by 25% of the same volume of CPCMs, the PCAM exhibited a better cooling effect and relatively small decrease in mechanical strength. Therefore, the PCAM developed in this research has great potential for improving the thermal performance of asphalt steel bridge deck.

Research Area(s)

Asphalt mixture, Cooling performance, Mechanical strength, Phase change materials

Citation Format(s)

[ RIS ] [ BibTeX ]

Study on preparation and thermal performance improvements of composite phase change material for asphalt steel bridge deck. / Hu, Huachong; Chen, Weixiang; Cai, Xu et al.
In: Construction and Building Materials, Vol. 310, 125255, 06.12.2021.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Hu, H, Chen, W, Cai, X, Xu, T, Cui, H, Zhou, X, Chen, J , Huang, G & Sun, Y 2021, 'Study on preparation and thermal performance improvements of composite phase change material for asphalt steel bridge deck', Construction and Building Materials, vol. 310, 125255. https://doi.org/10.1016/j.conbuildmat.2021.125255

Hu, H., Chen, W., Cai, X., Xu, T., Cui, H., Zhou, X., Chen, J., Huang, G., & Sun, Y. (2021). Study on preparation and thermal performance improvements of composite phase change material for asphalt steel bridge deck. Construction and Building Materials, 310, Article 125255. https://doi.org/10.1016/j.conbuildmat.2021.125255

Hu H, Chen W, Cai X, Xu T, Cui H, Zhou X et al. Study on preparation and thermal performance improvements of composite phase change material for asphalt steel bridge deck. Construction and Building Materials. 2021 Dec 6;310:125255. Epub 2021 Oct 19. doi: 10.1016/j.conbuildmat.2021.125255

Hu, Huachong ; Chen, Weixiang ; Cai, Xu et al. / Study on preparation and thermal performance improvements of composite phase change material for asphalt steel bridge deck. In: Construction and Building Materials. 2021 ; Vol. 310.