集料组成对沥青混合料均匀性影响的试验分析及数值模拟
发布时间：2018-08-11 18:18
【摘要】：为分析集料组成及其粒径分布对沥青混合料均匀性的影响,采用自制设备模拟沥青混合料生产中集料从料仓中下落,对单一粒径和AC-13混合料的集料下落试验,采用PFC2D颗粒流程序对AC-13集料级配范围的上限、中值及下限的数值模拟,结果表明混合料中≥9.5 mm及≤2.36 mm粒径级配变异是导致沥青混合料不均匀的关键粒径范围,在沥青路面设计及施工中,严格控制级配可提高的路面工程质量。
[Abstract]:In order to analyze the effect of aggregate composition and particle size distribution on the uniformity of asphalt mixture, a self-made equipment was used to simulate the aggregate falling from the silo in the production of asphalt mixture. The single particle size and the aggregate drop test of AC-13 mixture were carried out. The numerical simulation of the upper limit, median and lower limit of AC-13 aggregate gradation range by using PFC2D particle flow program shows that the variation of particle size gradation 鈮，
本文编号：2177830
[Abstract]:In order to analyze the effect of aggregate composition and particle size distribution on the uniformity of asphalt mixture, a self-made equipment was used to simulate the aggregate falling from the silo in the production of asphalt mixture. The single particle size and the aggregate drop test of AC-13 mixture were carried out. The numerical simulation of the upper limit, median and lower limit of AC-13 aggregate gradation range by using PFC2D particle flow program shows that the variation of particle size gradation 鈮，
本文编号：2177830
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