| 摘要: |
| 以伊朗岩沥青（IRA）为改性剂，制备了IRA掺量为5%~20%的IRA改性沥青（IRAMA），分析了IRA、IRAMA的微观特性，测试了IRAMA的路用性能，研究了IRAMA的流变性能.结果表明：IRA表面的极性基团使其具有极强的吸附力和稳定的化学性质，IRA与基质沥青的反应属于物理共混；随着IRA掺量的增大，循环荷载作用下IRAMA的弹性响应越好，高温条件下其抗永久变形能力越强；IRA的掺入提高了沥青的高温性能. |
| 关键词: 伊朗岩沥青 微观特性 热性能 流变性能 |
| DOI：10.3969/j.issn.1007-9629.2021.06.019 |
| 分类号:U414 |
| 基金项目:国家自然科学基金资助项目（51308084）；中央高校基本科研业务费专项资金资助项目（3132017029）；大连海事大学“双一流”建设专项（BSCXXM021）；辽宁公路科技创新重点科研项目（201701） |
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| Microstructure Characteristic and Properties of Iranian Rock Asphalt Modified Asphalt |
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JIN Xin1, GUO Naisheng1, SUN Siwei2, SONG Chengzhe3, YOU Zhanping4
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1.College of Transportation Engineering， Dalian Maritime University， Dalian 116026， China;2.Liaoning Transportation Research Institute Co.， Ltd.， Shenyang 110000， China;3.Liaoning Provincial Transportation Planning and Design Institute Co.， Ltd.， Shenyang 110111， China;4.Department of Civil and Environmental Engineering， Michigan Technological University， Houghton MI49931， USA
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| Abstract: |
| Iranian rock asphalt （IRA） modified asphalts （IRAMA） with IRA content of 5%-20% as modifier were successfully prepared. The microstructure characteristics of IRA and IRAMA were analyzed. The road performance of IRAMA was tested. The rheological properties of IRAMA were analyzed. The results indicate that the polar groups on the surface of IRA make it of strong adsorption capacity and stable chemical properties. The reaction between IRA and base asphalt belongs to physical blending. With the increasing of IRA content， the better the elastic response of IRAMA under cyclic load， the stronger the permanent deformation resistance under high temperature. The addition of IRA improves the high temperature performance of asphalt. |
| Key words: Iranian rock asphalt microstructure characteristic thermal performance rheological property |
