|Table of Contents|

Influence of epoxy resin composite phase change material on road and temperature regulation performance of asphalt mixture(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2024年2期
Page:
34-45
Research Field:
道路工程
Publishing date:

Info

Title:
Influence of epoxy resin composite phase change material on road and temperature regulation performance of asphalt mixture
Author(s):
WANG Xiao-qing1;  SI Wei1; 2;  MA Biao1;  WANG Wei3;  YU Miao4
(1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Postdoctoral Research Station,Xizang Tianlu Co. Ltd., Lhasa 850000, Xizang, China; 3. Sichuan Jiuma Expressway Co. Ltd.,Aba Xizang and Qiang Autonomous Prefecture 610000, Sichuan, China; 4. Xi'an Highway Research Institution, Xi'an 710064, Shaanxi, China)
Keywords:
road engineering;  asphalt mixture;  experimental research;  phase change materials;  road performance;  temperature regulation
PACS:
U416.2
DOI:
10.19721/j.cnki.1671-8879.2024.02.004
Abstract:
To solve the problem of insufficient thermal stability and mechanical properties of phasechange materials for asphalt mixture, a new type of epoxy resin composite phase change materialwas prepared by using epoxy resin composite and pentadecane shaped encapsulation phase changematerial, and equal volume substitution method was used in asphalt mixture. The phase change andthermal properties of epoxy resin composite phase change materials were tested and analyzed by differential scanning calorimetry(DSC), differential thermal(TG)analysis and thermalconductivity meter. The temperature regulation performance and effect of phase change asphaltmixture were analyzed by temperature regulation test, and the road performance of phase changeasphalt mixture was verified. The results show that the phase change enthalpy of epoxy resincomposite phase change material can reach more than 60 J/g, and there is almost no heat losswithin 180 °C, with high heat storage density and good thermal stability. The apparent specificheat capacity increases significantly in the phase change interval, and the maximum values are10.9 and 6.7 J/(g?℃)during the heating and cooling process, respectively. The greater the content of phase change material, thebetter the temperature regulation effect, the temperature regulation performance is also related tothe location of the mixture. The maximum temperature difference and the maximum temperaturechange rate of the phase change asphalt mixture increase with the increase of depth. The phasechange asphalt mixture has significant temperature regulation effect under each content. When thecontent of epoxy resin composite phase change material is less than 4%, the phase change asphaltmixture can meet the road performance requirements.7 tabs, 13 figs, 25 refs.

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Last Update: 2024-03-01