碳纤维石墨导电沥青混凝土的制备及导电性能研究

Research on Preparation and Conductive Performance of Conductive Carbon Fiber Graphite Asphalt Concrete

导电沥青混凝土是一种非常理想的道路融雪化冰铺装材料,对沥青、集料和矿粉等原材料进行性能试验后,计算出矿质混合料的合成级配。通过对沥青混合料的试验和计算,得到基准油石比,并对导电沥青混合料的拌和顺序加以调整,完善了导电沥青混凝土的制备工艺。而后采用四电极法测量以各导电相材料掺量及油石比制备的导电沥青混凝土试件的电阻率,分别分析碳纤维、石墨掺量及油石比对电阻率的影响,得出了最佳导电相材料掺量和油石比范围。

Conductive carbon fiber graphite asphalt concrete can warm up by itself after being connected to electricity and in this sense it can remove the ice and snow on the road. Raw materials including asphalt, aggregates, and mineral powder are tested on their performances and the synthesis grading of mineral mixture is calculated. The benchmark aggregate ratio is further obtained by tests and calculations on asphalt mixture. The sequence of mixing conductive asphalt mixtures is also adjusted to improve the producing techniques. The resistivity of specimens produced by these material and the aggregates is calculated by four-electrode pattern so as to analyze the respective impact of carbon fiber, graphite, and aggregate ratio on the resistivity. In this way, the range of optimal mixture ratio of conductive materials and aggregates is obtained.