导电超薄抗滑磨耗层长期性能试验研究

发布时间：2019-02-26 12:52

【摘要】：采用加速加载试验、冻融循环试验测试了导电超薄抗滑磨耗层在冻融、水压及重复荷载等因素作用下的导电和抗滑性能的长期耐久性.结果表明:导电超薄抗滑磨耗层初始电阻率为4.18×10-3Ω·m,3次冻融循环后变为4.15×10-3Ω·m,经冻融与100万轴次累积荷载耦合作用和50万轴次浸水加速加载后电阻率分别增大5.0%与2.5%;导电超薄抗滑磨耗层初始摩擦摆值为65~67BPN,经冻融与100万轴次累积荷载耦合作用和50万轴次浸水加速加载后摩擦摆值分别衰减10.0%与6.0%,即导电超薄抗滑磨耗层在导电和抗滑性能方面均具有良好的耐久性;在36V供电条件下,导电超薄抗滑磨耗层发热功率为427.7 W/m2(电极间距2m),可满足路面融冰雪需要.
[Abstract]:The long-term durability of conductive ultra-thin anti-slip wear layer under the action of freeze-thaw, water pressure and repeated load was tested by accelerated loading test and freeze-thaw cycle test. The results show that the initial resistivity of the conductive ultra-thin anti-slip wear layer is 4.18 脳 10 ~ 3 惟 m, and becomes 4.15 脳 10 脳 10 ~ 3 惟 m after three cycles of freezing and thawing. The resistivity increases by 5.0% and 2.5% respectively after the coupling action of freeze-thaw and 1 million-axis cumulative load and the accelerated loading of 500000-axis immersion water. The initial friction pendulum value of the conductive ultra-thin anti-sliding wear layer is 65 脳 67 BPN, and the friction pendulum value decreases by 10.0% and 6.0% respectively after the coupled action of freezing-thawing and 1 million-axis cumulative load and the accelerated loading of 500000-axis immersion water. That is, the conductive ultra-thin anti-skid wear layer has good durability in both conductive and anti-skid performance; Under the condition of 36V power supply, the heating power of conductive and ultra-thin anti-skid wear layer is 427.7 W/m2 (2m electrode spacing), which can meet the need of melting snow and ice on the road surface.
【作者单位】：同济大学道路与交通工程教育部重点实验室;
【分类号】：U414

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