废旧沥青混料再生分析与试验研究

Analysis and Experimental Study of Waste Asphalt Mixture Regeneration

我国高速公路中常采用沥青混凝土路面,当前大量的沥青路面进入大修阶段,由此产生了相当多的道路废弃材料。针对国内外研究进展,结合G107望都段路基路面养护大中修项目,首先对路面老化机理进行研究,分析了路面强度、旧路面破损状况、路面维修方法等。随后采用沥青再生取样方法对原路面材料进行分析,并对水泥稳定冷再生混合料进行配比设计,通过试验方法研究了其冷再生机理,确定了最佳含水率和最大干密度。希望为今后沥青路面冷再生技术的实施提供理论参考。

Highway in asphalt concrete pavement in our country, the current into the overhaul period of asphalt pavement, which produced a considerable amount of waste materials. According to research progress at home and abroad, combined with G 107 medium-capital overhauling project, first study of pavement aging mechanism, analyzed the pavement strength, the condition of old pavement damage, pavement maintenance methods. Then RAP sampling method to analyze the original pavement materials, and cement can be used for cold recycled mixture ratio design, the cold regeneration mechanism is studied through experiment method, to determine the maximum dry density and optimum moisture content. Hope asphalt pavement cold regeneration technology can provide theoretical reference in the future.