Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (2): 112-115,124.

• Materials Science & Technology • Previous Articles     Next Articles

Effects of Silane Coupling on Interface Between Asphalt and Granite or Cement Mortar

Su Da-gen  He Juan  Zhang Jing-feng   

  1. Key Laboratory of Specially Functional Materials of the Ministry of Education , South China Univ. of Tech. ,Guangzhou 510640 , Guangdong , China
  • Received:2006-01-20 Online:2007-02-25 Published:2007-02-25
  • Contact: 苏达根(1948-)，男，教授，博士生导师，主要从事生态环境材料及土木工程材料的研究. E-mail:dgsu@scut. edu. cn
  • About author:苏达根(1948-)，男，教授，博士生导师，主要从事生态环境材料及土木工程材料的研究.

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Abstract:

The water solution of silane coupling A was sprayed to the surfaces of granite and cement mortar , and the effècts of silane coupling on the inte由ces between asphalt (or emulsificated asphalt) and granite (or cement mortar) were investigated by means of infrared spectrum analyses , strength determination and adhesion tests. The results show that (1) for the granite , sand powder and cement slurry powder treated by silane coupling A, there
appear clear-CH2 absorption bands in the IR spectra as well as coupling layers on the surfaces , which enhance their cohesion with asphalt and emulsificated asphalt; (2) after the coating of cement mortar with O. 6% silane cou-pling A and after the connection to emulsificated asphalt and asphalt , the 28 -day flexural and tensile strengths of the spaceman increase by 20% and 60% respectively; and (3) after the soaking in silane coupling A solution , the granite is of a larger binding area with emulsificated asphalt and an increased cohesiveness grade with asphalt.

Key words: asphalt, emulsificated asphalt, silane coupling, interface, cohesion