【摘要】：為分析集料組成及其粒徑分布對(duì)瀝青混合料均勻性的影響,采用自制設(shè)備模擬瀝青混合料生產(chǎn)中集料從料倉(cāng)中下落,對(duì)單一粒徑和AC-13混合料的集料下落試驗(yàn),采用PFC2D顆粒流程序?qū)C-13集料級(jí)配范圍的上限、中值及下限的數(shù)值模擬,結(jié)果表明混合料中≥9.5 mm及≤2.36 mm粒徑級(jí)配變異是導(dǎo)致瀝青混合料不均勻的關(guān)鍵粒徑范圍,在瀝青路面設(shè)計(jì)及施工中,嚴(yán)格控制級(jí)配可提高的路面工程質(zhì)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，

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