摘要
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,并应用示差扫描量热(DSC)方法对改性机理进行了研究和分析。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. They include asphalt technical property test, Marshall test, rutting test at high temperature, bend test at low temperature and water stability test. The mechanism of asphalt property modified by nano calcium carbonate is studied by DSC method. The results obtained in the paper show that when 8% nano calcium carbonate is put into the asphalt, the stability of the asphalt and its mixture is remarkably increased at high temperature.
出处
《公路》
北大核心
2005年第6期145-148,共4页
Highway
