Effects of Electrically Conductive Additives to Laboratory-Measured Properties of Asphalt Mixtures
Effects of Electrically Conductive Additives to Laboratory-Measured Properties of Asphalt Mixtures
复制标题
DOI：
10.1061/(asce)0899-1561(2009)21:10(612
复制
发表时间：
2009-10
期刊：
影响因子：
--
通讯作者：
Baoshan Huang;Xingwei Chen;Jingyao Cao
中科院分区：
文献类型：
--
作者：
Baoshan Huang;Xingwei Chen;Jingyao Cao
沥青混合物通常表现为绝缘体。导电添加剂的添加可以产生导电沥青混合物。本研究调查了几种常用的导电添加剂生产导电HMA的有效性。通过沥青混合料性能测试，研究了微米级钢纤维、碳纤维和石墨3种导电添加剂对沥青混合料性能的影响。研究结果表明，微米级钢纤维是制备导电HMA的最有效的添加剂。钢纤维和碳纤维的加入改善了导电热塑性沥青的永久变形性能，保持了其抗间接拉伸开裂性能，并略微降低了其动态模量。作为导电添加剂的石墨的列入显着改善了抗车辙性，增加了动态模量，但显着降低了导电HMA混合物的抗间接拉伸开裂性。
An asphalt mixture generally behaves as an insulator. The addition of electrically conductive additives may produce conductive asphalt mixtures. The present study investigated effectiveness of several commonly used conductive additives to produce electrically conductive HMA. Effects of three conductive additives, a micron-scale steel fiber, a carbon fiber, and graphite, on some laboratory-measured properties of HMA mixtures were investigated through mixture performance testing. The results from this study indicated that the micron-scale steel fiber was the most effective additive to produce conductive HMA. The inclusion of steel and carbon fibers improved permanent deformation properties, maintained the indirect tensile cracking resistance, and slightly reduced the dynamic modulus of the conductive HMA. The inclusion of graphite as an electrically conductive additive significantly improved the rut-resistance, increased the dynamic modulus, but significantly decreased the indirect tensile cracking resistance of the conductive HMA mixtures.