摘要
为了研究沥青胶浆的高温性能,采用了3种试验方法——锥入度试验、动态剪切流变试验和旋转粘度试验,分析了石灰石矿粉、水泥和消石灰3种填料以及4种粉胶质量比(0.6,0.8,1.0,1.2)对沥青胶浆高温性能的影响,并把不同试验方法得到的结果进行了比较。结果表明:水泥和消石灰可以增加沥青胶浆的稠硬性,提高沥青胶浆的抗剪强度、抗车辙因子和粘度,从而有利于改善沥青胶浆的高温性能;锥入度试验得到的抗剪强度指标可以很好地区分不同填料、不同粉胶质量比对沥青胶浆性能的影响,并与抗车辙因子和粘度指标之间有很好的相关性,是一种评价沥青胶浆高温性能的有效方法。
To study asphalt mortars＇ properties at high temperature, this paper analyzed the influence of three different filler sorts （limestone dust, cement and hydrated lime） and four different mass ratios of filler/asphalt （0.6, 0.8, 1.0, 1.2） on the asphalt mortars＇ properties by awl penetration test, dynamic shear rheometer （DSR） and Brookfield viscometer. The contrasts among different test results were presented. The results show that cement and hydrated lime can increase asphalt mortars＇ anti-shear stress, G^＊/sin8 and viscosity, and are helpful to its properties at high temperature. Furthermore, anti-shear stress from awl penetration test has a good correlation with G^＊/sin8 and viscosity. It proves that awl penetration test is an effective measurement for studying asphalt mortars＇ properties at high temperature. 4 tabs, 5 figs, 10 refs.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第5期30-34,共5页
Journal of Chang’an University(Natural Science Edition)
基金
国家自然科学基金项目(50578016)
关键词
道路工程
沥青胶浆
水泥
消石灰
粉胶质量比
锥入度试验
road engineering
asphalt mortar
cement
hydrated lime
mass ratio of filler/asphalt
awl penetration test
