Journal of South China University of Technology(Natural Science) >

2025 , Vol. 53 >Issue 2: 80 - 91

DOI: https://doi.org/10.12141/j.issn.1000-565X.240152

Quantitative Method of Aggregate Spalling Degree of Chip Seal in Three Dimension

  • ZHANG Yandi ,
  • HUI Bing ,
  • MA Ziye ,
  • LI Yuanle ,
  • WANG Hainian
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  • 1.School of Highway，Chang’an University，Xi’an 710064，Shaanxi，China
    2.Key Laboratory of Intelligent Construction and Maintenance of CAAC，Xi’an 710075，Shaanxi，China
张炎棣（1997—），男，博士生，主要从事沥青路面病害无损检测研究。E-mail： 506347241@qq.com

Received date: 2024-04-03

  Online published: 2024-08-23

Supported by

the National Key R & D Program of China(2021YFB2601000);the National Natural Science Foundation of China(52078048)

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Abstract

In order to accurately quantify aggregate loss in chip seals and address the limitations of traditional methods that overlook the shape and orientation of chip seals, this study utilized indoor 3D laser scanning equipment to capture point cloud data of chip seals before and after stripping. By introducing the minimum intra-class variance, the elevation segmentation threshold was determined, allowing for the spatial stripping contours. This enables the calculation of stripping area indicators and provides the error distribution of the laser method for measu-ring stripping areas. Individual stripped aggregates were reassembled, and the stripping mass and stripping area indicators for each stripped region were compared. Additionally, the AIMS-Ⅱ system was employed to examine the shape characteristics of the spalling aggregates. The results demonstrated the mean relative error for 75 stripping area samples was 4.07%, indicating high detection accuracy. The standard deviation of the spalling area calculation ranged from 1.73 to 3.89, confirming the good detection stability. A comparison of the mass loss and spalling area of each spalling region revealed a general trend of increasing mass loss with increasing spalling area; however, discrepancies were observed where increased spalling area corresponded to decreased mass loss. Shape analysis using AIMS-II indicated that flaky aggregates tend to have large spalling areas but small masses, whereas needle-like aggregates typically have large mass loss but small spalling areas.

Key words： road engineering; chip seal; 3D laser; aggregate spalling; spalling area

Cite this article

ZHANG Yandi , HUI Bing , MA Ziye , LI Yuanle , WANG Hainian . Quantitative Method of Aggregate Spalling Degree of Chip Seal in Three Dimension[J]. Journal of South China University of Technology(Natural Science), 2025 , 53(2) : 80 -91 . DOI: 10.12141/j.issn.1000-565X.240152

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