摘要The method that uses only a compaction degree indicator in the core specimens of asphalt pavement for evaluating construction quality cannot effectively reflect the volumetric property and inner structure of asphalt mixtures. Virtually reconstructed specimens are generated by cone-beam scanning field cores with a high-accuracy industrial X-ray computed tomography, and the vertical slice images and digital processing of the aggregate are adopted. To evaluate the vertical structural segregation of the field core specimens, indicators such as the non-uniformity coefficient of coarse aggregate and the vertical variation coefficient of specimens are presented. Results indicate that (1) in various construction control situations, the inner structures of asphalt pavement with the same graded mixture have obvious differences; (2) coarse aggregate particles in the specimens show the regularity of homogeneity in the middle and segregation at both bottoms; and (3) pavement specimens have a gentle homogeneity curve and a small vertical variation coefficient in a road section with superior construction control.
Abstract：The method that uses only a compaction degree indicator in the core specimens of asphalt pavement for evaluating construction quality cannot effectively reflect the volumetric property and inner structure of asphalt mixtures. Virtually reconstructed specimens are generated by cone-beam scanning field cores with a high-accuracy industrial X-ray computed tomography, and the vertical slice images and digital processing of the aggregate are adopted. To evaluate the vertical structural segregation of the field core specimens, indicators such as the non-uniformity coefficient of coarse aggregate and the vertical variation coefficient of specimens are presented. Results indicate that (1) in various construction control situations, the inner structures of asphalt pavement with the same graded mixture have obvious differences; (2) coarse aggregate particles in the specimens show the regularity of homogeneity in the middle and segregation at both bottoms; and (3) pavement specimens have a gentle homogeneity curve and a small vertical variation coefficient in a road section with superior construction control.
基金资助:Supported by the National Natural Science Foundation of China (No.51038004,51378223); the Scientific and Technological Progress and Innovation Project of Hunan Province Transport Department (No.200809)
通讯作者:
LI Zhi, E-mail:lizhi@scut.edu.cn
E-mail: lizhi@scut.edu.cn
引用本文:
李智, 陈思宇. 采用X射线CT技术评价沥青路面结构内部质量均匀性[J]. Journal of Highway and Transportation Research and Development, 2015, 9(3): 27-33.
LI Zhi, CHEN Si-yu. Evaluating the Homogeneity of the Interval Quality of Asphalt Pavement Structure with X-ray Computed Tomography. Journal of Highway and Transportation Research and Development, 2015, 9(3): 27-33.
[1] STROUP-GARDINER M, BROWN E R. Segregation in Hot-mix Asphalt Pavement[M]. Washington, D. C.:National Academy Press, 2000.
[2] CROSS S A, BROWN E R. Effect of Segregation on Performance of Hot-Mix Asphalt[J]. Transportation Research Record, 1993, 1417:117-126.
[3] KHEDAYWI T S, WHITE TD. Effect of Segregation on Fatigue Performance of Asphalt Paving Mixture[J]. Transportation Research Record, 1996, 1543:63-70.
[4] CROSS S A, HAININ M R, ADU-OSEI A. Effect of Segregation on Mix Properties of Hot Mix Asphalt, KU96-6[R]. Kansas City:University of Kansas Center for Research, 1998.
[5] BROWN E R, COLLINS R, BROWNFIEID J R. Investigation of Segregation of Asphalt Mixtures in the State of Georgia[J]. Transportation Research Record, 1989, 1217:1-8.
[6] ELLIOT R P, FORD Jr M C, GHANIM M, et al. Effect of Aggregate Gradation Variation on Asphalt Concrete Mix Properties[J]. Transportation Research Record, 1991, 1317:52-60.
[7] JIANG Wang-heng, LI Zhi, ZHANG Xiao-ning. Effect of Gradation Segregation on Resistance of Moisture-induced Damage of Asphalt Mixture[J]. Journal of Highway and Transportation Research and Development, 2010, 27(2):10-15. (in Chinese)
[8] ZHANG Yan-cong, WANG Da-peng, TIAN Bo, et al. Evaluation Method of Segregation of Road Concrete[J]. Journal of Highway and Transportation Research and Development, 2012, 29(1):23-27, 33. (in Chinese)
[9] WANG L B, FROST J D, SHASHIDHAR N. Microstructure Study of WesTrack Mixes from X-Ray Tomography Images[J]. Transportation Research Record, 2001, 1767:85-94.
[10] THYAGARAJAN S, TASHMAN L, MASAD E, et al. The Heterogeneity and Mechanical Response of Hot Mix Asphalt Laboratory Specimens[J]. International Journal of Pavement Engineering, 2010, 11(2):107-121.
[11] JIANG Ze-zhong, ZHANG Hua, XIE Tao, et al. Research on Meso-damage Evolution of Asphalt Mixtures Based on Image Technology[J]. Journal of Highway and Transportation Research and Development, 2009, 26(2):27-31, 36. (in Chinese)
[12] WAN Cheng, ZHANG Xiao-ning, WANG Shao-huai, et al. Reconstruction of 3D Digital Specimen of Asphalt Mixture Based on X-Ray CT Technology[J]. Journal of Highway and Transportation Research and Development, 2010, 27(11):33-37, 42. (in Chinese)
[13] ZHANG Qian, SUN Hong-hong. Measurement and Analysis of Inner Air Voids of Asphalt Mixture Based on Matlab[J]. Journal of Highway and Transportation Research and Development, 2012, 29(6):1-5. (in Chinese)
[14] ZHANG Chao-zhong. Industrial Computed Tomography Technology and Principle[M]. Beijing:Science Press, 2009. (in Chinese)
[15] LI Zhi, LIU Jia-hui. Segmentation of Asphalt Mixtures Using X-ray Computed Tomography Images Based on Ring Block and OTSU Method[J]. Journal of Wuhan University of Technology, 2011, 33(6):50-53. (in Chinese)
[16] LI Zhi. Analysis of Volume Constituent Characteristics for Asphalt Mixture Based on Digital Image Processing[D]. Harbin:Harbin Institute of Technology, 2002. (in Chinese)
[17] WU Wen-liang. Research on Digital Image Processing Technique and Probability Statistics of Asphalt Mixtures[D]. Guangzhou:South China University of Technology, 2009. (in Chinese)
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2015, Vol. 9 
