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Materials (Basel). 2019 Apr 12;12(8). pii: E1201. doi: 10.3390/ma12081201.

Experimental Study on Wet Skid Resistance of Asphalt Pavements in Icy Conditions.

Author information

1
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China. yanboxiang@whut.edu.cn.
2
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China. mhhyue@whut.edu.cn.
3
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China. lanlv@whut.edu.cn.
4
School of Information and Mathematics, Yangtze University, Jingzhou 434000, China. lanlv@whut.edu.cn.
5
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China. pengfeizhang@whut.edu.cn.
6
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China. zxs971206@163.com.

Abstract

In this research, the durability of skid resistance during the ice melting process with temperature increasing from -5 °C to 10 °C was characterized by means of a British Pendulum Skid Tester. Four types of pavement surfaces were prepared and tested. The difference between two antiskid layers prepared with bitumen emulsion was the aggregate. The detailed angularity and form 2D index of fine aggregates used for antiskid surfaces, characterized by means of the Aggregate Image Measure System (AIMS) with micro image analysis methods, were then correlated with British Pendulum Number (BPN) values. Results indicate that skid resistance has the lowest value during the ice-melting process. The investigated antiskid layers can increase the surface friction during icy seasons. In icy conditions, the skid resistance behavior first worsens until reaches the lowest value, and then increases gradually with increasing temperature. Results from ice-melting conditions on four investigated pavement surfaces give the same temperature range where there will be lowest skid resistance. That temperature range is from 3 °C to 5 °C. A thicker ice layer will result in a lower skid resistance property and smaller "lowest BPN".

KEYWORDS:

antiskid surface; asphalt pavement; durability; image analysis; skid resistance

PMID:
31013783
DOI:
10.3390/ma12081201
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