| 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418×10-3Ω·m，3次冻融循环后变为415×10-3Ω·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50%与25%；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100%与60%，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4277W/m2（电极间距2m），可满足路面融冰雪需要. |
| 关键词: 导电超薄抗滑磨耗层 长期性能 导电性能 抗滑性能 融冰雪 |
| DOI：103969/j.issn.1007 9629201706027 |
| 分类号: |
| 基金项目: |
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| Long Term Performance of Conductive Ultra thin Anti skidding Wearing Course |
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SUN Daquan, SUN Guoqiang, LIU Fuliang
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Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 201804, China
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| Abstract: |
| Long term performance of skid resistance and conductivity of conductive ultra thin anti skidding wearing course(CUAWC) under freezing thawing cycles, soaking and repeated loading were evaluated by model mobile load simulator(MMLS3) and freezing thawing tests. Results show that the initial resistivity of the CUAWC is 418×10-3Ω·m, while the resistivity reduces to 415×10-3Ω·m after three freezing thawing cycles. The resistivity of the CUAWC increases by 50% after the coupling action of freezing thawing cycles and 1million cumulative load, and rises by 25% after 500 thousand cumulative soaking load. Moreover, the initial BPN value of the CUAWC is within 6567BPN, while BPN value decreases by 100% after the coupling action of freezing thawing cycles and 1million cumulative load, and reduces by 60% after 500 thousand cumulative soaking load. The test results indicate that CUAWC has good long term performance of skid resistance and conductivity. In addition, the heating power of CUAWC with 2m electrode gap can reach 4277W/m2 at 36V, which meets the need for melting ice and snow on road surface. |
| Key words: conductive ultra thin anti skidding wearing course(CUAWC) long term performance conductivity skid resistance melting snow and ice |
