特立尼达湖沥青中灰分特性研究

发布时间：2018-06-23 06:50

本文选题：道路工程 + 特立尼达湖沥青　；参考：《公路交通科技》2014年07期

【摘要】：为把握特立尼达湖沥青改性机理,对分离出的灰分进行了微观性质测试、技术指标分析和与沥青相互作用研究,并和2种路用矿粉进行对比。初选3种灰分分离技术,通过分离效果和操作可行性的对比,建议使用离心机分离灰分的方法;通过微观颗粒形态和晶体组成测试,发现灰分颗粒粒径小、表面构造粗糙,其主要材料组成为石英和黏土;技术指标研究上发现灰分具有较大的密度、更细的粒度以及庞大的比表面积;测试了灰分与2种矿粉制备胶浆的G*/sinδ,显示灰分的增劲效果强于矿粉,且当粉胶比大于1.2时明显增大,增幅远超过普通矿粉。故灰分凭借粒度小、表面积大且粗糙等特征,能增强沥青高温性能。
[Abstract]:In order to understand the modification mechanism of Trinidad Lake asphalt, the ash content was tested, technical index analysis and interaction with asphalt were studied, and compared with two kinds of road ore powder. By comparing the separation effect and operational feasibility of three primary ash separation techniques, it is suggested to use centrifuge to separate ash, and through the microcosmic particle morphology and crystal composition test, it is found that the ash particle size is small, the surface structure is rough, The main materials are quartz and clay, and the ash has larger density, finer granularity and large specific surface area. The Gon / sin 未 of mortar prepared by ash and two kinds of ore powder were tested. The results show that the effect of ash on strength is stronger than that of mineral powder, and the increase is much larger than that of ordinary ore powder when the ratio of powder to binder is more than 1.2. So ash can enhance the high temperature performance of asphalt because of its small particle size, large surface area and roughness.
【作者单位】：长沙理工大学交通运输工程学院;嘉兴市交通工程质量安全监督站;
【基金】：国家自然科学基金项目(51078045) 特殊环境道路工程湖南省重点实验室重点项目(kfi130401) 广西省自然科学基金项目(2012GXNSFBA053158) 广西道路结构与材料重点实验室培育基地开放课题(2013gxjgclkf-002)
【分类号】：U414

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