粉胶比与集料级配对开级配沥青混凝土性能的影响

王鸿博 钱春香王修田

（东南大学）

摘要：试验研究了粉胶比和集料级配对开级配沥青混凝土（OGFC）力学性能和透水性的影响。结果表明，上限级配的力学性能随着粉胶比增大而增强，中值和下限级配的力学性能随着粉胶比增大先增强后减弱。在粉胶比保持不变的情况下，中值级配和下限级配沥青混合料形成骨架－空隙结构，上限级配的混合料形成骨架－密实结构。从兼顾力学性能和透水功能的角度出发，粉胶比1：1的中值级配和粉胶比0.8：1的下限级配的OGFC为级配与粉胶比的最佳组合。

关键词：粉胶比，级配，力学性能，空隙率

Experimental research on the influence of filler-asphalt ratio and gradation on OGFC

WANG Hong-bo  QUIAN Chun-xiang  WANG Xiu-tian

Abstract: This paper studied the effects of the filler-asphalt ratio and the gradation on mechanical properties and water permeability of OGFC. The mechanical properties of upper gradation improves as filler-asphalt ratio rises. The mechanical properties of the intermediate and the nether gradation improve firstly but deteriorate lately as filler-asphalt ratio rises. Keeping the filler-asphalt ratio as constant, the intermediate and the nether gradation make up of skeleton-void structure and the upper gradation makes up of skeleton-close structure. On account of the performance and mechanical properties, the intermediate gradation (filler/asphalt=1) and the nether gradation (filler/asphalt=0.8)  are the most proper gradation of OGFC .

Keywords: filler-asphalt ratio, gradation, mechanical property, voids ratio