Ultra Thin Continuously Reinforced Concrete Pavement Development in South Africa

Ultra thin continuously reinforced concrete pavements (UTCRCP), in literature also referred to as Ultra Thin Heavy Reinforced High Performance Concrete (UTHRHPC), have been used in Europe successfully as a rehabilitation measure on steel bridge decks and reported on at the 5th International CROW workshop in Istanbul (2004). This concept has been explored further in South Africa for use as a road strengthening measure by constructing experimental sections of 50 mm UTCRCP directly on top of both natural gravel and cement-treated natural materials. During the experiment the composition of the UTCRCP layer was varied in terms of mix design, steel fibre type and content, reinforcing steel mesh diameter and spacing. To date a total of 10 experimental sections have been tested using the Heavy Vehicle Simulator (HVS) and rendered structural lives that varied from 5 million to 90 million equivalent standard (80 kN) axles on medium to weak support structure. The results obtained were then evaluated through 3D-finite element modelling and the design was refined using laboratory tests. The refined UTCRCP design was then subjected to further HVS testing. The paper discusses the above process in more detail.

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• Supplemental Notes:
  • Abstract reprinted with permission from the International Society for Concrete Pavements.
• Corporate Authors:

  International Society for Concrete Pavements

  6305 Oyster Bay Court
  Bridgeville, Pennsylvania  United States  15017
• Authors:
  • Kannemeyer, L
  • Perrie, B D
  • Strauss, P J
  • du Plessis, L
• Conference:
  • 9th International Conference on Concrete Pavements
  • Location: San Francisco California, United States
  • Date: 2008-8-17 to 2008-8-21
• Publication Date: 2008

Language

• English

Media Info

• Media Type: Digital/other
• Features: CD-ROM; Figures; Photos; References; Tables;
• Pagination: pp 995-1018
• Monograph Title: 9th International Conference on Concrete Pavements: The Golden Gate to Tomorrow's Concrete Pavements

Subject/Index Terms

• TRT Terms: Accelerated tests; Continuously reinforced concrete pavements; Finite element method; High performance concrete; Laboratory tests; Mix design; Pavement design; Pavement layers; Pavement performance; Test sections; Whitetopping
• Geographic Terms: South Africa
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 01494795
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 23 2013 11:54AM