基于PQI的沥青混合料现场压实参数研究

Research on Field Compaction Parameters of Asphalt Mixture Based on PQI

为了准确评价沥青路面压实效果,采用无核密度仪对路面密度进行检测,分析了GAC-13型沥青混合料的现场压实曲线特征、碾压模式、工艺参数对沥青路面压实度的影响,并推荐了合理的碾压工艺参数。结果表明：在相同碾压遍数的条件下,采用轮胎压路机进行碾压,沥青混合料更加密实,4cm厚的GAC-13型改性沥青混合料经碾压6~7遍后,压实度能够达到最大值。

In order to accurately evaluate the compaction effect of asphalt pavement,the pavement density was measured by using the non-nuclear density meter.The influence of field compaction curves,rolling modes and technological parameters on the compaction degree of GAC-13 asphalt mixture was analyzed,and reasonable parameters for the compaction process were recommended.The results show that under the same compaction times,asphalt mixture is more compacted with pneumatic tyred roller.After 6or 7times of compaction,the compaction degree of GAC-13 modified asphalt mixture as thick as 4cm normally reaches the maximum.