Selecting Construction Measures for Mitigating Early-Age Delamination in Continuously Reinforced Concrete Pavements Made with Gravel Aggregates

Gravel aggregates had been used extensively in the Houston District for continuously reinforced concrete (CRC) pavements construction for many years. However, some of these pavements have been subject to early-age delamination and eventual spalling damage. A series of studies funded by Texas Department of Transportation since the early 1990's has been conducted to gain a better understanding of mechanisms, material properties, and construction practices related to delamination and spalling. In this paper, a systematic and methodical approach for selecting construction measures to counter the negative effects of using gravel aggregates in concrete paving is described as it pertains to minimizing early-age delamination distress. It was developed based on laboratory measures and practices, numerical approaches for assessing delamination potential, and test sections established in the Houston District. The testing programs in the laboratory and the field as well as the analytical results are presented in this paper. The analysis of the results leads to a step-by-step approach for evaluating and selecting construction measures.

Language

  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; Photos; References;
  • Pagination: 16p
  • Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

Filing Info

  • Accession Number: 01043833
  • Record Type: Publication
  • Report/Paper Numbers: 07-2371
  • Files: TRIS, TRB
  • Created Date: Feb 8 2007 7:03PM