橡胶粉对提高再生热拌沥青混合料抗车辙性能的研究  

A Study on Improving Property of Rutting Resistance of Reclaimed Hot Mix Asphalt Mixture by Adding Rubber Powder

作　　者：张起森[1] 何良杰[1] 

机构地区：[1]长沙理工大学,长沙市410076

出　　处：《公路》2008年第11期206-211,共6页Highway

摘　　要：了解掺入了橡胶颗粒的再生沥青混合料的抗车辙性能,对今后使用再生沥青混合料是具有积极作用的。以往的事实证明使用再生沥青是极具经济性和环保性的,同时它还能有效地增加沥青混合料的抗车辙能力;而橡胶沥青的使用也被证实它能有效地改善混合料的路用性能,譬如抗车辙性能等,应用于全国各地以至于世界各地的热拌橡胶沥青混合料就是使用橡胶沥青的成功典范。本研究是通过一系列室内试验,对橡胶沥青混合料的抗车辙性能进行研究分析,这些试验包括掺入了2类橡胶、4种橡胶用量和3种尺寸橡胶颗粒的情况。试验表明在热拌沥青中掺入一定量的再生沥青和橡胶颗粒能有效地改善混合料的抗车辙性能。Imporved understanding of rutting resistance of a rubberized asphalt concrete pavement that contains reclaimed asphalt pavement （RAP） is important to stimulating the use of rubberized asphalt mixtures. Use of RAP in the past has proved to be economical, environmentally sound, and effective in incerasing the rutting resistance of asphalt mixtures. Rubberized asphalt has been used successfully in improving the mechanical characteristics, such as rutting resistance, of typical hot mix asphalt （HMA） mixture around the country and the world. The objective of this research is to investigate the rutting resistance characteristics of the rubberized asphalt mixtures through a laboratory testing program. The experimental design include use of two rubber types （ambient and cryogenically peoduced）,four rubber contents, and three crumb rubber sizes. The results of the experiments indicate that the use of RAP and crumb rubber in the HMA can effectively improve the rut resistance of these mixtures.

关 键 词：沥青混凝土 沥青混凝土路面 粘结料 抗拉强度 再生利用 

分 类 号：U418.68[交通运输工程—道路与铁道工程]