Yan Boxiang, Mao Huanhuan, Zhong Sai, Zhang Pengfei, Zhang Xiaoshan
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.
School of Information and Mathematics, Yangtze University, Jingzhou 434000, China.
Materials (Basel). 2019 Apr 12;12(8):1201. doi: 10.3390/ma12081201.
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".
在本研究中，使用英国摆式摩擦系数测试仪对温度从-5°C升至10°C的融冰过程中的防滑耐久性进行了表征。制备并测试了四种类型的路面表面。用沥青乳液制备的两种防滑层之间的差异在于集料。然后，通过集料图像测量系统（AIMS）采用微观图像分析方法对用于防滑表面的细集料的详细棱角性和二维形状指数与英国摆值（BPN）进行了关联。结果表明，防滑性在融冰过程中具有最低值。所研究的防滑层可在结冰季节增加表面摩擦力。在结冰条件下，防滑性能首先变差直至达到最低值，然后随着温度升高逐渐增加。对四种被研究路面表面的融冰条件测试结果表明，在3°C至5°C的温度范围内防滑性最低。冰层越厚，防滑性能越低，“最低BPN”越小。
