电极对结构自诊断沥青混凝土电阻率的影响

主要针对用于结构自诊断沥青混凝土的电极材料和尺寸优选展开研究,通过研究埋入自诊断沥青混凝土中不同电极输出电阻率的变化,观察分析其测试的灵敏度以及电阻率波动情况,选择出适合自诊断沥青路面的电极。基于上述的方法,选择合适的电极植入到结构自诊断沥青混凝土之中。结果显示,不锈钢网作为电极比铁网作为电极时的电阻率输出较为稳定,此时电极的尺寸以测试样品横截面面积的40%～60%为宜。

Influence of Electrode on Resistivity of Conductive Asphalt Concrete for Self-monitoring

This paper focuses on an optimized research about materials and size of electrode of self-monitoring asphalt concrete.It can be easily observed and analyzed the sensitivity of the test and resistivity fluctuations by studying the changes of output resistivity in different electrode embedded in the self-monitoring asphalt concrete.Based on the above method,we can select the proper electrode for the self-monitoring asphalt concrete.The results indicate that the output resistivity of self-monitoring asphalt concrete have much more fluctuation than which used stainless steel mesh as electrode material when choosing the iron mesh as electrode material.Meanwhile,the results demonstrate that the measured output resistivity of self-monitoring asphalt concrete is the most stable when the electrode size is 40%~60% of cross-sectional area.