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 temperaturerelated 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 microscopic characterization,chemical compatibility,thermal properties,durability,and leakage stability.Secondly,CPCMs were applied to the asphalt mixture to evaluate its temperatureadjusted 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 temperatureadjusted 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.
基金
supported by the National Natural Science Foundation of China(52174237,51704040)
Science Foundation for Outstanding Youth of Hunan Province(2022JJ10051)
Excellent Early Career Scientists from Germany(GZ1717)
Science and Technology Project of Changsha-Outstanding Innovative Youth(kq2305020)
Guangdong Provincial Key Laboratory of Modern Civil Engineering Technology(2021B1212040003)
Postgraduate Scientific Research Innovation Project of Hunan Province(CX20230851,QL20230205)。
作者简介
Yuchao Gao received the MS degree from Changsha University of Science and Technology in China.Currently,he is a PhD student at the School of Traffic and Transportation Engineering,Changsha University of Science and Technology.His research interest focuses on pavement engineering materials,finite element method,and recycled asphalt mixtures.E-mail addresses:yuchaogao@stu.csust.edu.cn(Y.Gao);Corresponding author:Jiao Jin received the PhD degree from School of Materials Science and Engineering,Central South University in China.Currently,she is serving as an associate professor at the School of Traffic and Transportation Engineering,Changsha University of Science and Technology in China.Her research interest focuses on functional materials,pavement structure and material,green energy,and pavement function layer.E-mail addresses:jinjiao@csust.edu.cn(J.Jin);Shuai Liu received the MS degree from Changsha University of Science and Technology in China.Currently,he is a PhD student at the School of Traffic and Transportation Engineering,Changsha University of Science and Technology.His research interests focus on functional pavement materials,modified asphalt and asphalt mixture.E-mail addresses:shuailiu@stu.csust.edu.cn(S.Liu);Yinfei Du received the BS degree in civil engineering from Qingdao University of Technology in 2009 and the PhD degree in traffic and transportation engineering in Southeast University in 2016.He is currently an associate professor at the School of Civil Engineering,Central South University.His research interests include temperature control methods of asphalt pavement and novel maintenance technologies of asphalt pavement.E-mail addresses:yfdu_csu@csu.edu.cn(Y.Du);Guoping Qian received the MS degree from School of Traffic and Transportation Engineering,Changsha University of Science and Technology in China,the PhD from School of Traffic and Transportation Engineering,Tongji University in China.Currently,he is serving as a professor at the School of Traffic and Transportation Engineering,Changsha University of Science and Technology in China.His research interest focuses on pavement structure and material,maintenance technology and management,and environmental protection.E-mail addresses:guopingqian@sina.com(G.Qian);Jie Mao received his BS degree from the South China University of Technology,majoring in traffic and civil engineering.He is the chief engineer of Guangdong Guangyue Highway&Bridge Co.,Ltd.and has served as the project manager for many construction projects.He has published many papers and obtained several patents.He was also the first prize winner of the 2022“Zhan Tianyou Hometown Cup”Science and Technology Award.E-mail addresses:maojacker@126.com(J.Mao);Yongqiang Zhu received his BS degree from South China University of Technology,majoring in traffic and civil engineering.He is a senior engineer of road and bridge.He is currently the deputy director of the technology department of Guangdong Guanyue Highway&Bridge Co.,Ltd.and has served as the chief engineer of numerous projects.He was awarded the title of Outstanding Science and Technology Worker in Civil Engineering and Construction of Guangdong Province in 2022,and has published over 20 papers and national patents.E-mail addresses:zhu15602229920@126.com(Y.Zhu).
