【作者】 刘洪海； 许小鹏； 李少华；

【Author】 LIU Hong-hai,XU Xiao-peng,LI Shaohua (College of Engineering Machinery,Chang’an University,Xi’an 710064)

【机构】 长安大学工程机械学院；

【摘要】 沥青混合料生产级配对路面空隙率有重要影响。在分析空隙率对沥青混合料性能影响的基础上,探讨了集料特性、级配组成和压实功等因素对矿料间隙率VMA的影响,并研究了混合料生产级配变化对VMA的影响和在施工过程中保持沥青路面具有合理空隙率、优良路用性能对VMA变化量的要求,得出了相应于最大公称粒径的密级配混合料关键筛孔的生产级配允许变化范围。更多还原

【Abstract】 Mixture gradation deeply influences the pavement air voids.On the basis of the analyzing the effect of the air voids to the mixture performance,the effect of the coarse material performance,gradation and compaction power to the VMA is discussed.This paper also studies the effect of various gradation to VMA and the requirements to the variation of VMA to keep the volumetric factor and pavement performance well during asphalt pavement construction and the variation limit of density gradation mixture key sieve size was obtained for different NMAS.更多还原