Study on Compatibility and Rheological Properties of High-Viscosity Modified Asphalt Prepared from Low-Grade Asphalt

被引：37

作者：

Li, Mingliang ^{[1
]}

Zeng, Feng ^{[2
]}

Xu, Ruigang ^{[3
]}

Cao, Dongwei ^{[4
]}

Li, Jun ^{[1
]}

机构：

[1] Minist Transport, Res Inst Highway, Rd Engn Res Ctr, Xitucheng Rd, Beijing 100088, Peoples R China

[2] China Rd & Bridge Corportat, Andingmenwai St 88, Beijing 100011, Peoples R China

[3] China Railway Third Bur Grp Co Ltd, Survey & Design Branch, Jinsong Rd 16, Taiyuan 030001, Shanxi, Peoples R China

[4] Zhonglugaoke Beijing Rd Technol Co Ltd, Xitucheng Rd 8, Beijing 100088, Peoples R China

来源：

MATERIALS | 2019年 / 12卷 / 22期

关键词：

high-viscosity modified asphalt; low grade asphalt; porous asphalt; rheological property; viscosity-temperature characteristic; DESIGN;

D O I：

10.3390/ma12223776

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

High-viscosity modified asphalt is mainly used as a binder for porous asphalt in China and Japan. In order to meet the demand for using porous asphalt under high temperature condition in Africa, high-viscosity asphalt made from low-grade matrix asphalt, which is commonly used in Africa is investigated. Based on simulation of local climate in Africa, the suitable range of high viscosity additive content for different matrix asphalt was obtained by analyzing dynamic viscosity of the asphalt. Through PG high temperature grading, multi-stress repeated creep, accelerated fatigue, temperature sweep and other tests, changes of high temperature, anti-fatigue and anti-shear indicators before and after modification were compared and analyzed and effects of different matrix asphalt were also studied. Finally, considering engineering requirements, mixing and compaction temperatures of various high-viscosity modified asphalt were determined through study of viscosity-temperature characteristics. This research provides a support for preparation of high-viscosity modified asphalt and porous asphalt mixture by using low grade asphalt. The research achievements can help to guide the material design and application of porous asphalt in Africa and other high temperature areas.

引用

页数：18

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