Performance evaluation of new epoxy resin-based composite phase change materials and their asphalt mixture

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外文摘要：In recent years,the temperature-adjusted asphalt pavement has been an extensive concern by scholars in various countries,and this pavement can reduce temperature-related diseases.In this study,the shaped composite phase change materials(CPCMs)were successfully synthesized by two processes,which are vacuum impregnation and epoxy curing.Firstly,the applicability of CPCMs in asphalt mixtures was evaluated by micro-scopic characterization,chemical compatibility,thermal properties,durability,and leakage stability.Secondly,CPCMs were applied to the asphalt mixture to evaluate its temperature-adjusted characteristics and pavement performance.Finally,the performance of the temperature-adjusted asphalt mixture was analyzed by integrating all factors.The research shows that the prepared CPCMs have excellent thermal properties and durability,the phase transition temperature is 48.93 ℃,and the phase transition enthalpy is 106.5 J/g,which fully meets the requirements for use in pavement.The temperature-adjusted asphalt mixture could alleviate the occurrence of extreme temperature,which was 4.9 ℃ lower than the conventional mixture.The pavement performance of the temperature-adjusted asphalt mixture can meet the specified standards for humid areas.Considering the factors,the recommended amount of CPCMs is 1.5％.The research results provide a basis for the promotion of temperature-adjusted asphalt pavement and effectively support the development of pavement engineering technology.

外文关键词：

Pavement engineeringTemperature-adjusted asphaltmixturePhase change materialsThermal performance

作者：

Yuchao Gao、Jiao Jin、Shuai Liu、Yinfei Du、Guoping Qian、Jie Mao、Yongqiang Zhu

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作者单位：

School of Traffic and Transportation Engineering,Changsha University of Science and Technology,Changsha 410114,China

School of Civil Engineering,Central South University,Changsha 410075,China

Guangdong Guanyue Highway and Bridge Co.,Ltd.,Guangzhou 511452,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaScience Foundation for Outstanding Youth of Hunan ProvinceExcellent Early Career Scientists from GermanyScience and Technology Project of Changsha-Outstanding Innovative YouthGuangdong Provincial Key Laboratory of Modern Civil Engineering TechnologyPostgraduate Scientific Research Innovation Project of Hunan ProvincePostgraduate Scientific Research Innovation Project of Hunan Province

项目编号：

52174237517040402022JJ10051GZ1717kq23050202021B1212040003CX20230851QL20230205

出版年：

2024

DOI：

10.1016/j.jtte.2023.03.001

交通运输工程学报(英文版)

CSTPCD

ISSN：2095-7564

年,卷(期)：2024.11(3)