Funding for this research was provided by:
the Open Fund of Key Laboratory of Road Structure and Material of Ministry of Transport (kfj170301)
Hunan Provincial Natural Science Foundation of China (2019JJ40295)
Changsha University of Science and Technology Postgraduate Research and Innovation Project (CX2019SS31)
Key Project of Hunan Provincial Education Department of China (17A002)
Article History
Received: 17 December 2020
Accepted: 11 February 2021
First Online: 1 March 2021
Declarations
:
: The authors declare no conflicts of interest.