Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (11): 54-58,62.

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Investigation into Grading Characteristic of Coarse Aggregate via Digital Image Processing Technique

Wang Hai-nian1  Hao Pei-wen1  Pang Li-guo1   Di Jian-hong2   

  1. 1. Key Laboratory for Special Area Highway Engineering of the Ministry of Education , Chang'an Univ. ,Xi'an 710064，Shaanxi， China;2. School of Electric Engineering, Shijiazhuang Railway Institute , Shijiazhuang 050043 ， Hebei , China
  • Received:2006-10-09 Online:2007-11-25 Published:2007-11-25
  • Contact: 汪海年(1977-) ，男，讲师，博士，主要从事路面结构与道路材料研究. E-mail:Wanghn@chd.edu.cn
  • About author:汪海年(1977-) ，男，讲师，博士，主要从事路面结构与道路材料研究.
  • Supported by:

    国家自然科学基金资助项目(50578016)

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Abstract:

In this paper , digital image processing (DIP) technique is adopted to study the image grading characteristics of coarse aggregate. By using the self-developed morphology analysis system of coarse aggregate (MASCA) , a conversion method is put forward to transform the two-dimension DIP grading image into the three-dimension mechanical sieving image. The results show that the DIP grading image accords well with the mechanical sieving one , with an error of less than 5 %. Moreover, the proposed method has a good universality for different stones and grading , thus there following the conclusion that the MASCA system is feasible in the measurement of grading characteristics of coarse aggregate.

Key words: highway engineering, coarse aggregate, grading, digital image processing