Evaluation and Testing of a Lightweight Fine Aggregate Concrete Bridge Deck in Buchanan County, Iowa

Internal curing is a relatively new technique being used to promote hydration of portland cement concretes. The fundamental concept is to provide reservoirs of water within the matrix such that the water does not increase the initial water/cementitious materials ratio to the mixture, but is available to help continue hydration once the system starts to dry out. The reservoirs used in the US are typically in the form of lightweight fine aggregate (LWFA) that is saturated prior to batching. Considerable work has been conducted both in the laboratory and in the field to confirm that this approach is fundamentally sound and yet practical for construction purposes. A number of bridge decks have been successfully constructed around the US, including one in Iowa in 2013. It is reported that inclusion of about 20% to 30% LWFA will not only improve strength development and potential durability, but, more importantly, will significantly reduce shrinking, thus reducing cracking risk. The aim of this work was to investigate the feasibility of such an approach in a bridge deck.

• Record URL:
  http://lib.dr.iastate.edu/intrans_reports/200/
• Record URL:
  http://publications.iowa.gov/id/eprint/22239
• Record URL:
  http://www.intrans.iastate.edu/research/projects/detail/?projectID=420075554
• 
• Summary URL:
  http://lib.dr.iastate.edu/intrans_techtransfer/110/
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/30836
• Corporate Authors:

  Iowa State University, Ames

  National Concrete Pavement Technology Center
  2711 S Loop Drive
  Ames, IA  United States  50010

  Iowa State University, Ames

  Bridge Engineering Center
  2711 South Loop Drive, Suite 4700
  Ames, Iowa  United States  50010-8664

  Iowa Department of Transportation

  Iowa Highway Research Board, 800 Lincoln Way
  Ames, IA  United States  50010

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Taylor, Peter
  • Hosteng, Travis
  • Wang, Xuhao
  • Phares, Brent
• Publication Date: 2016-5

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Figures; Maps; Photos; References; Tables;
• Pagination: 52p

Subject/Index Terms

• TRT Terms: Bridge decks; Cracking; Evaluation and assessment; Feasibility analysis; Field tests; Fine aggregates; Laboratory tests; Life cycle costing; Load tests; Mix design; Portland cement concrete; Shrinkage
• Geographic Terms: Buchanan County (Iowa)
• Subject Areas: Bridges and other structures; Construction; Highways; Pavements;

Filing Info

• Accession Number: 01603601
• Record Type: Publication
• Report/Paper Numbers: IHRB Project TR-648, InTrans Project 12-434
• Files: NTL, TRIS, ATRI, USDOT, STATEDOT
• Created Date: Jun 28 2016 4:41PM