不同矿粉对沥青胶浆的模量增效研究  

Study on Modulus Increasing Effect of Asphalt Mortar by Different Kinds of Mineral Powder

作　　者：任俐璇[1] 

机构地区：[1]山东交通职业学院,山东潍坊261206

出　　处：《公路交通科技》2015年第5期25-30,35,共7页Journal of Highway and Transportation Research and Development

摘　　要：采用不同产地的石灰岩矿粉、火山灰、拌和站回收粉,对其配置的沥青胶浆进行了研究。通过常规指标和流变性质检测分析认为:矿粉对基础沥青起到明显的模量增效行为,但对石油沥青和SBS改性沥青具有不同的影响特点,在高温剪切状态下,矿粉不改变石油沥青的黏、弹性组成,而改变了改性沥青的黏弹组成。同时,不同矿粉决定了沥青胶浆的模量增效速率;当矿粉亲水系数大于1或亚甲蓝值大于12后,不再会对沥青胶浆物理指标(稠度、软化点)变化提供更多的改善行为。但不管矿粉的亲油能力如何,它对基础沥青的模量增效效果是有限的,不会达到天然沥青带来的改性效果。A series of asphalt mortar which made of different kinds of limestone mineral filler, volcanic ash and recycled filler from different regions is studied. The analyzing result of Conventional index and rheological property detection shows that （ 1 ） Filler can significantly increase the modulus effect of matrix asphalt, but it has different effects on petroleum asphalt and SBS modified asphalt, in high temperature shear state, mineral powder will not change the viscoelasticity component of petroleum asphalt but change that of modified asphalt. （2） Modulus increasing rates affected by different kinds of mineral filler are different. When hydrophilic index of mineral filler is more than 1 or MBV is more than 12, mineral filler cannot longer improve the physical indicators of asphalt mastic such as consistence and softening point. Whatever its lipophilic ability, mineral filler has a limited contribution to modulus increasing effect of matrix asphalt and cannot reach a modification effect like natural asphalt.

关 键 词：道路工程 沥青胶浆 模量增效 矿粉性质 

分 类 号：U414.3[交通运输工程—道路与铁道工程]