Using Multiple Investigative Techniques to Assess Flushing of Chip Seal Surfaces

Flushing is a defect that has a damaging effect on the functional performance of chip seal pavements. The reported study was conducted to develop techniques to identify and assess flushed pavements effectively. The main aims of the study were first to investigate the effects of chip seal volumetrics on development of flushing and second to develop a model to forecast flushing of chip seal pavements. The study methodology consisted of mechanical testing of chip seal pavement samples and analysis of pavement performance data. Laboratory testing was conducted on samples obtained from flushed chip seal pavements from four regions in New Zealand. Samples were loaded by using a wheel-tracking device, and imaging techniques were used to assess the effects of micromechanical changes on development of flushing. Data analysis was performed on pavement condition data to identify factors providing the best prediction of flushing, and regression analysis was performed to develop a model to predict the initiation and progression of flushing. Study results revealed a direct relationship between flushing and reduction in air void volume that occurred as a result of loading. Data analysis revealed that the combination of factors providing the best indication of flushing was surface thickness, surface age, rut depth, and grade of aggregates. The flushing initiation model had an accuracy of 76%, and the flushing progression model was robust at predicting the quantity of flushing. By using the study outcomes, a pavement condition assessment guideline was developed to aid with assessing and managing flushed chip seal pavements.

• Record URL:
  • https://doi.org/10.3141/2431-06
• Summary URL:
  • http://scholar.google.com/scholar_lookup?title=Using+Multiple+Investigative+Techniques+to+Assess+Flushing+of+Chip+Seal+Surfaces&author=S.+Kodippily&author=T.+Henning&author=J.+Ingham&author=G.+Holleran&publication_year=2014
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780309295178
• Authors:
  • Kodippily, Sachi
  • Henning, Theuns F P
  • Ingham, Jason M
  • Holleran, Glynn
• Publication Date: 2014

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 42–48
• Monograph Title: Maintenance and Preservation 2014
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Issue Number: 2431
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Air voids; Bleeding (Pavements); Chip seals; Laboratory tests; Mathematical models; Pavement management systems; Pavement performance; Regression analysis
• Geographic Terms: New Zealand
• Subject Areas: Highways; Maintenance and Preservation; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 01506443
• Record Type: Publication
• ISBN: 9780309295178
• Report/Paper Numbers: 14-1316
• Files: TRIS, TRB, ATRI
• Created Date: Feb 3 2014 12:23PM