Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (2): 87-91.

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Experimental Investigation into Pavement Performance of Buton Rock Asphalt Mixtures

Huang Wen-tong  Xu Guo-yuan   

  1. School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2011-04-29 Revised:2011-08-30 Online:2012-02-25 Published:2012-01-04
  • Contact: 黄文通(1976-) ，男，博士生，高级实验师，主要从事道路工程材料研究． E-mail:wthuang@scut.edu.cn
  • About author:黄文通(1976-) ，男，博士生，高级实验师，主要从事道路工程材料研究．
  • Supported by:

    国家自然科学基金资助项目( 51078151)

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Abstract:

In order to evaluate the properties of asphalt mixtures modified by Buton rock asphalt ( BRA) ,A-70 asphalt was used as the base asphalt to test the pavement performances of modified asphalt mixtures with different BRA dosages. The results show that (1) the Marshall stability,the splitting strength and the water stability of BRA mixtures are all higher than those of A-70 asphalt and SBS modified asphalt mixtures; (2) the dynamic stability of BRA mixtures is much stronger than that of A-70 asphalt mixtures but is similar to that of SBS modified asphalt mixtures; (3) though BRA helps to effectively improve the low-temperature performance of asphalt mixtures,its dosage should not exceed 25% in engineering because the low-temperature performance of the mixtures degrades when the BRA dosage increases from 20% to 25%.

Key words: Buton rock asphalt, asphalt mixture, pavement performance, odification mechanism, igh-temperature tability, water stability, low-temperature performance

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