Yang Zhao*, **, Xiao-dong Jia*, Xiang-ke Zhang*, Lu Li***,† , and Nai-xing Liang**,†
*ChongQing Technology and Business Institute, Chongqing 400052, China
**School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
***Chongqing Zhixiang Paving Technology Engineering Co., Ltd., Chongqing 401336, China
Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.
In this research, the miscibility of polyvinyl alcohol (PVA) fiber and asphalt under high temperature was explored for improving the performances of PVA/asphalt mixture. Our research shows that the PVA fiber can maintain its properties after heating at 130 oC, which lays a foundation for the mixing of PVA fiber with asphalt. According to this, PVA fibers have been uniformly dispersed in asphalt by an extrusion mixing method at 130 oC. With the addition of PVA fiber, the viscosity, shear strength, complex modulus and rutting factor of the asphalt at high temperature. Besides, the cumulative strain and non-recoverable creep compliance of the PVA/asphalt mixture decreased with the increase of PVA content, which means the PVA/asphalt mixture had a good recovery ability at high temperature. This research provides a basis for the research on miscibility and performance of PVA/asphalt mixture.
Keywords: road engineering, polyvinyl alcohol fiber, heat resistance, rheology, multiple stress creep recovery.
2023; 47(1): 33-41
Published online Jan 25, 2023
**School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
***Chongqing Zhixiang Paving Technology Engineering Co., Ltd., Chongqing 401336, China