Comparison Analysis of the Aggregate Contact Characteristics between Skeleton-Dense and Suspended-Dense Structure Asphalt Mixture

Abstract:

The contact between aggregates is an important feature of asphalt mixture skeleton. By comparing skeleton-dense and suspended-dense structure asphalt mixture test results, this paper studied the distribution characteristics of coarse aggregate contacts by using two-dimension digital image processing technique. The results indicate that skeleton-dense asphalt mixture has more homogeneous distribution of contact points, and a relatively stable skeleton structure than suspended-dense mixture. In two-dimension image, homogeneous distribution of contact points and little unrestrained coarse aggregates are two evident characteristics of asphalt mixture with good rutting resistance. The rutting resistance of asphalt mixture has no correlation with contact points, but is related to the spatial distribution of the contact points.

• Periodical: Applied Mechanics and Materials (Volume 470)
• Pages: 889-892
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.470.889
• Online since: December 2013
• Authors: Li Wan Shi*, Duan Yi Wang, Julius Masley, Shu Wen Zhang
• Keywords: Aggregate Contact Characteristics, Asphalt Mixture (AC), Digital Image Processing Technique, Skeleton-Dense Sructure, Suspended-Dense Structure

References

[1] DuanYi Wang, Kan Li, Xu Cai. Evaluation of Rutting Resistance on Asphalt Mixture Based on Aggregate Contact Characteristics, J. Journal of South China University of Technology: Natural Science Edition, (40)2012 121-126.

[2] Hong Wei, Hong Ying, TianQing Ling. Aggregates contact characteristics evaluation of asphalt mixtures by analyzing cut images, J. Journal of Civil, Architectural & Environmental Engineering, (32)2010 69-74.

[3] Hong Ying, Hong Zhang. Study Distribution Characteristics of Aggregate contacts in AC20 HAM based on digital image processing, J. Journal of Building Materials, , (14) 2011 66-70.

[4] Jun Chen, XiaoMing Huang. Evaluation of aggregate skeleton structure using the discrete element method, J. Journal of Southeast University: Natural Science Edition, (42)2012 761-765.

[5] Tao Ma, Zhen Wang, YongLi Zhao. Degradation behavior of aggregate skeleton in stone matrix asphalt mixture, J. Journal of Central South University of Technology. (18) 2011 2192-2200.

DOI: 10.1007/s11771-011-0962-5

[6] Mostafa A. E, Imad L. A, Yang S. H, and Carpenter S.H. Validity of Asphalt Binder Film Thickness Concept in Hot-Mix Asphalt, J. Journal of the Transportation Research Board: 2008 37-45.

DOI: 10.3141/2057-05

[7] YueHua Duan. Basic Characteristics Research on Coarse Aggregates of Asphalt Mixture Based on X-ray CT, D. South China University of Technology Doctor Degree Thesis, (2011).

[8] Xu Cai. Rutting Resistance Evaluation and Structure Optimization of Asphalt Pavement, D. South China University of Technology Doctor Degree Thesis, (2013).

[9] Coenen, Kutay, Sefidmazgi, et al. Aggregate structure characterization of asphalt mixtures using 2-Dimensional image analysis, J. Road Materials and Pavement Design, (13)2012 433-454.

DOI: 10.1080/14680629.2012.711923

[10] JTG E-20-2011, Standard Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering, S. People's communication press, Beijing, (2011).