【摘要】 本文探讨了导电沥青基复合材料作为路用传感器的可行性。采用改进后的车辙试验和单轴压缩试验对其进行了研究,通过对实际路面荷载的模拟,向导电沥青混合料试件施加预设力,通过电阻变化得出导电沥青混合料的应力与电阻的对应关系。试验结果表明,导电沥青混合料的电阻对外加荷载的敏感性非常高,且卸载之后导电沥青混合料的电阻与时间具有良好的幂函数关系,可以将导电沥青混合料用于制备较精密的传感器。但由于导电沥青混合料的粘弹性性质,电阻回复到初始值所需的时间较长,如何应用尚需进一步研究。更多还原

【Abstract】 The feasibility of asphalt pressure sensor was investigated by two experiments: improved track test and uniaxial compress test.The relationship between electric resistance and stress was studied by simulation of asphalt pavement and conducting a controlled load on specimen.Test results show that the electrical resistance of conductive asphalt mixture is highly sensitivity to the stress,and the electrical resistance of conductive asphalt mixture followed a power-law function with the time after unloading.The precise sensor can be made by conductive asphalt mixture.But because vio-elasticity of conductive asphalt mixture,the revert time of it is long and the application needs further study.更多还原