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引用本文:	钱振东,王睿,陈团结.橡胶粉掺量对环氧沥青及其混合料性能的影响[J].建筑材料学报,2014,17(2):331-335

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橡胶粉掺量对环氧沥青及其混合料性能的影响
钱振东¹, 王睿¹, 陈团结²
1.东南大学智能运输系统研究中心，江苏南京210096;2.中交第一公路勘察设计研究院有限公司，陕西西安710065

摘要:

通过黏度、拉伸、马歇尔、车辙和低温弯曲试验分析了掺2%~10%（质量分数）橡胶粉的改性环氧沥青及其混合料的性能.结果表明：掺橡胶粉后，改性环氧沥青的容留时间略有缩短，断裂延伸率有所提高，其中掺6%橡胶粉的改性环氧沥青断裂延伸率可达261%；与普通环氧沥青混合料相比，掺2%，4%，6%橡胶粉的改性环氧沥青混合料其高温稳定性能良好，低温脆性均有所改善，且掺4%，6%橡胶粉的改性环氧沥青混合料低温强度较高、变形能力较好.

关键词: 环氧沥青橡胶粉沥青混合料配合比设计

DOI：103969/j.issn1007 9629201402027

分类号:

基金项目:“十一五”国家科技支撑计划项目（2009BAG15B03）

Performance of Epoxy Asphalt and Its Mixture underDifferent Rubber Powder Dosages

QIAN Zhendong¹, WANG Rui¹, CHEN Tuanjie²

1.Intelligent Transportation System Research Center, Southeast University, Nanjing 210096, China;2.CCCC First Highway Consultant Co. Ltd., Xian 710065, China

Abstract:

In order to know the influence of rubber powder on properties of epoxy asphalt and its mixture, various tests including viscosity, tensile, Marshall, rutting and bending beam strength were carried out for the crumb rubber modified epoxy asphalt under 2%10% rubber powder levels by mass. Based on these results, the reserved time of modified epoxy asphalt is shortened slightly, while the fracture elongation increases. The elongation of 6% rubber powder modified epoxy asphalt is up to 261%. Besides, the modified epoxy asphalt has better high temperature stability and its low temperature brittleness also improves. 4%, 6% crumb rubber modified epoxy asphalt mixtures show higher strength and better deformation capacity at low temperature.

Key words: epoxy asphalt rubber powder asphalt mixture mix design