Ultraviolet Aging Properties of Bitumen in Ultra-thin Asphalt Pavement

DOI

10.2991/amcce-17.2017.6How to use a DOI?

Keywords

road engineering; ultraviolet aging; infrared spectroscopy; bitumen; ultra-thin asphalt pavement

Abstract

Ultra-thin asphalt pavement is a material commonly used in the preventive maintenance engineering. Despite rather mature technologies at present, the ultraviolet aging problem of bitumen material during usage is often overlooked. To study the changes in the properties of bitumen materials in the ultra-thin asphalt pavement after ultraviolet aging, and to optimize the selection of bitumen, ultraviolet aging tests were carried out at different aging times using three types of bitumen. Penetration gradation indices and infrared spectroscopy were used to analyze the properties of bitumen before and after aging. The results showed that tiny pits and wrinkled textures appeared on the surface of bitumen films after ultraviolet aging. The aging properties of bitumen were remarkable. Different types of bitumen exhibited markedly distinct ultraviolet aging properties from each other. Although the mass of bitumen changed little before and after the ultraviolet aging, the penetration, softening point and ductility of bitumen all reduced significantly after ultraviolet aging, and the bitumen become hardened and more susceptible to fracture at low temperatures. The values of infrared absorption peaks increased significantly after aging for ultraviolet aging-sensitive bitumen materials. Based on this finding, the aging resistance of bitumen can be evaluated. After comprehensive comparison, it is found that bitumen C had the best aging resistance.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xingye Zhou
AU  - Bo Su
AU  - Xudong Wang
PY  - 2017/03
DA  - 2017/03
TI  - Ultraviolet Aging Properties of Bitumen in Ultra-thin Asphalt Pavement
BT  - Proceedings of the 2017 2nd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2017)
PB  - Atlantis Press
SP  - 31
EP  - 36
SN  - 2352-5401
UR  - https://doi.org/10.2991/amcce-17.2017.6
DO  - 10.2991/amcce-17.2017.6
ID  - Zhou2017/03
ER  -