生活废旧塑料与SBS改性沥青性能及应用的对比研究
发布时间：2018-11-16 12:24
【摘要】：CRP改性剂是以废旧塑料为原材,经过高温裂解方法制得的新型沥青改性剂。本文通过大量的室内试验,对废旧塑料CRP和SBS改性沥青及其混合料进行了全面的对比研究。采用常规试验方法对不同掺量的CRP与SBS改性沥青技术特性进行对比试验研究及分析。通过针入度、软化点、低温延度试验来研究CRP和SBS改性沥青的高温、低温性能；通过旋转粘度试验来探讨CRP与SBS改性沥青粘滞性能的变化。通过马歇尔稳定度试验、车辙试验、低温弯曲试验、粘附性试验、冻融劈裂试验、间接拉伸试验来研究CRP和SBS改性沥青混合料AC-13和SMA-13的高温抗车辙性能、低温抗裂性能、抗水损害能力和耐疲劳能力。试验结果表明：掺量为5%的废旧塑料CRP改性沥青与4%掺量的SBS改性沥青性能相当,CRP改性剂的加入可以显著提高沥青的高温性能；经CRP改性的沥青混合料具有显著的高温抗车辙性能,抗水损害能力和耐疲劳性能也得到明显提高。对干法和湿法CRP改性沥青混合料性能进行了研究,结果表明湿法CRP和SBS改性沥青混合料相比,仍然具有很好的高温稳定性、水敏感性以及相当的耐疲劳性能。最后分析了废旧塑料CRP改性沥青路面的经济效益与社会效益。
[Abstract]:CRP modifier is a new asphalt modifier made from waste plastics by high temperature pyrolysis. In this paper, through a large number of laboratory tests, a comprehensive comparative study of CRP and SBS modified asphalt and its mixture is carried out. The technical characteristics of CRP and SBS modified asphalt with different contents were studied and analyzed by conventional test method. The high and low temperature properties of CRP and SBS modified asphalt were studied by penetration, softening point and low temperature ductility test, and the viscosity of CRP and SBS modified asphalt was studied by rotating viscosity test. Through Marshall stability test, rutting test, low temperature bending test, adhesion test, freeze-thaw splitting test and indirect tensile test, the rutting resistance of CRP and SBS modified asphalt mixture AC-13 and SMA-13 at high temperature was studied. Low temperature crack resistance, water damage resistance and fatigue resistance. The experimental results show that the performance of waste plastic CRP modified asphalt is equal to that of 4% SBS modified asphalt, and the high temperature performance of asphalt can be improved by adding CRP modifier. The asphalt mixture modified by CRP has remarkable rutting resistance at high temperature, water damage resistance and fatigue resistance. The performance of dry and wet CRP modified asphalt mixture is studied. The results show that wet CRP still has good high temperature stability, water sensitivity and fatigue resistance compared with SBS modified asphalt mixture. Finally, the economic and social benefits of waste plastic CRP modified asphalt pavement are analyzed.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U414
本文编号：2335511
[Abstract]:CRP modifier is a new asphalt modifier made from waste plastics by high temperature pyrolysis. In this paper, through a large number of laboratory tests, a comprehensive comparative study of CRP and SBS modified asphalt and its mixture is carried out. The technical characteristics of CRP and SBS modified asphalt with different contents were studied and analyzed by conventional test method. The high and low temperature properties of CRP and SBS modified asphalt were studied by penetration, softening point and low temperature ductility test, and the viscosity of CRP and SBS modified asphalt was studied by rotating viscosity test. Through Marshall stability test, rutting test, low temperature bending test, adhesion test, freeze-thaw splitting test and indirect tensile test, the rutting resistance of CRP and SBS modified asphalt mixture AC-13 and SMA-13 at high temperature was studied. Low temperature crack resistance, water damage resistance and fatigue resistance. The experimental results show that the performance of waste plastic CRP modified asphalt is equal to that of 4% SBS modified asphalt, and the high temperature performance of asphalt can be improved by adding CRP modifier. The asphalt mixture modified by CRP has remarkable rutting resistance at high temperature, water damage resistance and fatigue resistance. The performance of dry and wet CRP modified asphalt mixture is studied. The results show that wet CRP still has good high temperature stability, water sensitivity and fatigue resistance compared with SBS modified asphalt mixture. Finally, the economic and social benefits of waste plastic CRP modified asphalt pavement are analyzed.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U414
【参考文献】
相关期刊论文 前2条
1 朱梦良,李金宝,张淑琴;粉体SBS改性沥青的应用研究[J];公路;1999年04期
2 王立志,钦兰成,高光涛,朱玉堂,张勇,张隐西;制备储存稳定的LDPE/SBS共混物改性沥青[J];石油沥青;2002年04期
，本文编号：2335511
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