Performance Evaluation of Whitetopping and Ultrathin Whitetopping Pavements

Whitetopping overlay is a relatively new rehabilitation technology as an alternative to hot-mix asphalt (HMA) overlay. It is defined as a portland cement concrete (PCC) overlay on the existing deteriorated HMA pavement to improve the structural and functional capability. When the PCC overlay thickness is less than or equal to 10.16 cm (4 in.), it is referred to as ultrathin whitetopping (UTW). Otherwise it is referred to as normal whitetopping (WT). The objective of this research is to evaluate the performance of in-service whitetopping pavements as a rehabilitation technology by means of a pavement distress survey and falling weight deflectometer test. The performance of whitetopping pavements was characterized by the pavement condition index and pavement distress index. Statistical analysis of the performance was conducted in regard to major factors. Slab thickness, slab size, and pavement age were found to have a significant effect on the performance. The critical distance method and the MODCOMP6 program were applied in this study to backcalculate the layer properties of UTW and WT, respectively. KENSLAB was used to determine pavement response for fatigue analysis.

• Record URL:
  • https://doi.org/10.3141/2205-31
• Summary URL:
  • http://scholar.google.com/scholar_lookup?title=Performance+Evaluation+of+Whitetopping+and+Ultrathin+Whitetopping+Pavements&author=X.+Li&author=H.+Wen&publication_year=2011
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780309167215
• Authors:
  • Li, Xiaojun
  • Wen, Haifang
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 247-253
• Monograph Title: Low-Volume Roads 2011, Volume 3
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Issue Number: 2205
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Asphalt pavements; Concrete overlays; Falling weight deflectometers; Fatigue (Mechanics); Low volume roads; Pavement distress; Pavement performance; Rehabilitation; Whitetopping
• Identifier Terms: KENSLAB (Computer program); MODCOMP (Computer program); Pavement Condition Index; Pavement Distress Index
• Uncontrolled Terms: Ultrathin whitetopping
• Subject Areas: Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I32: Concrete;

Filing Info

• Accession Number: 01345880
• Record Type: Publication
• ISBN: 9780309167215
• Files: TRIS, TRB, ATRI
• Created Date: Aug 1 2011 11:34AM