Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (6): 116-120.doi: 10.3969/j.issn.1000-565X.2013.06.018

• Materials Science & Technology • Previous Articles     Next Articles

Properties of Organic Montmorillonite/Crumb Rubber Compound Modified Asphalt

Xiao Xin-yan Yang Ze-qing   

  1. School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2012-12-19 Revised:2013-01-22 Online:2013-06-25 Published:2013-05-03
  • Contact: 肖新颜(1964-)，男，教授，博士生导师，主要从事聚合物纳米复合材料研究． E-mail:cexyxiao@scut.edu.cn
  • About author:肖新颜(1964-)，男，教授，博士生导师，主要从事聚合物纳米复合材料研究．
  • Supported by:

    石油化工联合基金资助项目(U1162120)

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Abstract:

Organic montmorillonite (OMMT) /crumb rubber compound modified asphalt was prepared via melt blending,and the microstructure of the product was characterized and analyzed by means of XRD and AFM.More-over,the physical properties,thermal oxidative aging properties and thermal storage stability of the product were in-vestigated.The results show that (1) the dispersion of crumb rubber in the modified asphalt becomes more uniform and an exfoliated structure forms due to the doping of OMMT; (2) as compared with the crumb rubber modified as-phalt,OMMT/crumb rubber compound modified asphalt is of improved high- temperature performances,for in-stance,with the increase of OMMT dosage,the softening point sharply increases,and the penetration (25℃) and the ductility (5℃) both decrease; and (3) after the doping of OMMT,both the thermal oxidative aging properties and the thermal storage stability of the compound modified asphalt improve significantly.

Key words: organic montmorillonite, crumb rubber, asphalt, thermal oxidative aging property, thermal storage stability

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