老化对胶粉和SBS改性沥青流变性能的影响
作者:
基金项目:

国家自然科学基金资助项目(11162012);内蒙古自然科学基金资助项目(2014MS0507)


Effect of Aging on Rheological Properties of Crumb Rubber and SBS Modified Asphalt
Author:
  • 摘要
  • | |
  • 访问统计
  • |
  • 参考文献 [19]
  • |
  • 相似文献 [20]
  • | | |
  • 文章评论
    摘要:

    为研究短期老化作用对胶粉(CR)改性沥青和SBS改性沥青流变性能的影响,通过旋转薄膜烘箱试验(RTFOT)对CR改性沥青和SBS改性沥青进行短期老化,然后在不同温度和荷载频率下进行动态剪切流变试验(DSR),结合扫描电子显微镜(SEM),对CR改性沥青和SBS改性沥青的流变性能和微观结构进行了研究.结果表明:老化前橡胶粉及SBS改性剂都能与沥青达到良好共融,老化后SBS改性剂与沥青的界面结合状况却差于橡胶粉与沥青的界面结合状况;老化作用使CR改性沥青和SBS改性沥青由储存模量G′(弹性)占主导作用转向由损失模量G″(黏性)占主导作用的温度转化点向高温转移;短期老化作用在高温下对SBS改性沥青产生的影响较大;短期老化前后,CR改性沥青较SBS改性沥青具有更强的高温抵抗变形能力和抗车辙能力;随加载频率增大,2种改性沥青的高温抗车辙能力都得到增强.

    Abstract:

    To investigate the effect of short term aging on rheological property of crumb rubber (CR) and SBS modified asphalt, the short term aging was carried out with a rotating thin film oven (RTFOT). The dynamic shear rheological (DSR) test was performed to measure the pertinent rheological parameters while scanning electron microscopy(SEM) was employed to observe the change in microscopic asphalt internal structure due to short term aging. The results show that before aging, rubber powder and SBS modifier both can well fuse with asphalt, but after aging, interface bonding between SBS modifier and asphalt is worse. For both crumb rubber or SBS modified asphalt, aging caused the transition temperature at which G′ was replaced by G″ to play dominant function shifts towards higher temperature. At high temperatures,short term aging has a greater impact on SBS modified asphalt. Before and after aging, crumb rubber modified asphalt has larger ability to resist deformation and high rut resistance; at high temperatures, both crumb rubber and SBS modified asphalt rut resistance increases with the rise of loading frequency.

    参考文献
    [1]沈金安.沥青与沥青混合料路用性能[M].北京:人民交通出版社,2001:185 213.
    SHEN Jinan.Road performance of asphalt and asphalt mixtures[M].Beijing: China Communication Press,2001:185 213.(in Chinese)
    [2]ALI B,SADEK M.Experimental analysis of the influence of crumb rubber addition on the short term aging of Syrian asphalt[J].Arabian Journal of Geosciences,2013,6(1):85 90.
    [3]SANTAGATA E,BAGLIERI O,DALMAZZO D.Evaluation of the anti rutting potential of polymer modified binders by means of creep recovery shear tests[J].Materials and Structures,2013,46(10):1673 1682.
    [4]HUANG W.Aging performance of SBS modified asphalt[J].Petroleum Science and Technology,2008,26(17):2108 2114.
    [5]SHASHIDHAR N,NEEDHAM S P,CHOLLAR B H.Rheological properties of chemically modified asphalts[J].Transportation Research Record,1995,1448:89 95.
    [6]YAMADA M.Testing of softening point and brittle point of asphalt mixtures[J].ASTM Special Technical Publication,1995,1241:175 185.
    [7]RAMOND G,SUCH C.Bitumens and modified bitumens: Relationships,structures,properties and composition[J].Bulletin de Liaison des Laboratoires des Ponts et Chausses,1990,168: 65 88.
    [8]ROJAS J M,HERNáNDEZ N A,MANERO O.Rheology and microstructure of functionalized polymer modified asphalt[J].Journal of Applied Polymer Science,2010,115(1):15 25.
    [9]XIAO X Y,YANG Z Q.Properties of organic montmorillonite/crumb rubber compound modified asphalt[J].Journal of South China University of Technology,2013,41(6): 116 120.
    [10]李双瑞,林青.SBS改性沥青机理研究发展[J].高分子通报,2008(5):14 18.
    LI Shuangrui,LIN Qing.Study on mechanism of SBS modified asphalt[J].Polymer Bulletin,2008(5):14 18.(in Chinese)
    [11]GHAVIBAZOO A,ABDELRAHMAN M.Composition analysis of crumb rubber during interaction with asphalt and effect on properties of binder[J].International Journal of Pavement Engineering,2013,14(5):517 530.
    [12]FANG C Q,WU C X,YU R E.Aging properties and mechanism of the modified asphalt by packaging waste polyethylene and waste rubber powder[J].Polymers for Advanced Technologies,2013,24(1):51 55.
    [13]DESSOUKY S,CONTRERAS D,SANCHEZ J.Influence of hindered phenol additives on the rheology of aged polymer modified bitumen[J].Construction and Building Materials,2013,38:214 223.
    [14]周纯秀,于春雨,谭忆秋.SBS改性沥青流变性能影响因素的试验研究[J].交通标准化,2005(1):44 48.
    ZHOU Chunxiu,YU Chunyu,TAN Yiqiu.Study on the different factor of rheological performance of SBS modified asphalt[J].Communications Standardization,2005(1):44 48.(in Chinese)
    [15]ORTIZ O J R,JIMENEZ F E P.Studying asphalt binder fatigue pattern by using a dynamic shear rheometer[J].Ingenieriae Investigacion,2011,31(1):47 55.
    [16]TAN Y Q,ZHANG L,GONG W Q.Investigation of the effects of wax additive on the properties of asphalt binder[J].Construction and Building Materials,2012,36:572 584.
    引证文献
    网友评论
    网友评论
    分享到微博
    发 布
引用本文

王岚,陈刚,邢永明,胡江三,冷冰.老化对胶粉和SBS改性沥青流变性能的影响[J].建筑材料学报,2015,18(3):499-504

复制
分享
文章指标
  • 点击次数:961
  • 下载次数: 0
  • HTML阅读次数: 0
  • 引用次数: 0
历史
  • 收稿日期:2013-10-25
  • 最后修改日期:2013-12-13
  • 在线发布日期: 2015-06-23
文章二维码