纳米碳酸钙改性沥青及混合料性能研究

A Study of the Performance of Nano Calcium Carbonate Modified Asphalt and the Mixture

对纳米碳酸钙改性沥青及沥青混合料进行了一系列室内试验,包括沥青的技术性能试验、沥青混合料的马歇尔试验、高温车辙试验、低温弯曲试验和残留稳定度试验等。结果表明:在沥青中掺入8%的纳米碳酸钙,可使沥青及沥青混合料的高温性能得到明显的改善,且掺加工艺简单方便、价格低廉,值得推广应用。

A series of tests of the nano calcium carbonate modified asphalt and the mixtures are made. These included asphalt technical property, Marshall test, rutting test at high temperature, bend test at low temperature and water stability, and the results show that the stability at high temperature of the nano (calcium) carbonate modified asphalt and the mixtures is markedly increased.