温拌沥青混合料马歇尔-轮碾分步设计方法

发布时间：2018-08-06 09:09

【摘要】：采用沥青混合料轮碾成型机,等体积参数原则,研究了Evotherm温拌沥青混合料的集料加热温度、混合料最低成型温度。发现温拌沥青混合料在最低成型温度的情况下,运用马歇尔-轮碾分步设计法设计的温拌沥青混合料水稳定性及疲劳性能试验结果优于热拌沥青混合料,其它指标与热拌沥青混合料相当,再降低成型温度时,混合料的空隙率将无法满足要求。结果表明:在材料组成、成型方式相同时,通过选用热拌混合料成熟的油石比设计方法、我国普及的轮碾成型机试验设备及该设备与实际路面压实效果较为接近的优势,提出的马歇尔-轮碾分步设计法可以准确的确定温拌沥青混合料集料加热温度和混合料的成型温度,使设计的温拌沥青混合料更能体现其环保降温的特点,在我国具有高的推广价值。
[Abstract]:Based on the principle of equal volume parameter, the aggregate heating temperature and the minimum forming temperature of Evotherm warm mix asphalt mixture are studied by using the asphalt mixture wheel forming machine and equal volume parameter principle. It is found that the test results of water stability and fatigue performance of warm mix asphalt mixture designed by Marshall wheel rolling step design method are better than that of hot mix asphalt mixture under the condition of the lowest molding temperature. The other indexes are equivalent to the hot mix asphalt mixture. When the molding temperature is reduced, the void ratio of the mixture will not meet the requirements. The results show that when the material composition and the forming method are the same, by selecting the mature oil-stone ratio design method of hot mix mixture, the common test equipment of wheel mill and the compaction effect of this equipment are close to the actual road surface compaction effect. The Marshall wheel rolling step design method can accurately determine the heating temperature of warm mix asphalt mixture aggregate and the molding temperature of mixture, so that the design of warm mix asphalt mixture can reflect the characteristics of environmental protection and cooling. In our country has the high promotion value.
【作者单位】：山西省交通科学研究院;黄土地区公路建设与养护技术交通行业重点实验室;
【基金】：山西省交通运输厅科技计划项目(20140106)
【分类号】：U414

【相似文献】