Laboratory Study of High Performance Curing Compounds for Concrete Pavements – Phase I

Three emulsion-type and two sealing-type curing compounds were evaluated for their ability to impart freeze-thaw scaling resistance, and restrict evaporation, carbonation and chloride penetration to concrete specimens prepared to represent common pavement situations. Two coarse aggregate types and three cementitious material situations were the main variables in addition to the five membrane forming curing compounds (MFCC’s). The final finishing and curing compound applications occurred at a fixed-time of two hours after casting. Coarse aggregate type had little or no influence on the results but the effectiveness of the MFCCs varied with the mix type. Slag cement and fly ash mixtures displayed considerably higher levels of scaling than the ordinary portland cement mix. In addition to the base durability of each type of concrete, observed differences were also likely the result of different levels of paste moisture at the surface at the time the curing compounds were applied. The moisture sealing ability of the curing compounds did not correlate with the tendency to protect from freeze-thaw scaling, suggesting that the MFCCs alter the surface layer of the concrete in multiple ways. Overall the acrylic sealing compound provided the best protection. The interaction between the MFCC and the concrete surface is complex. These results show it is not simply a question of the effectiveness of the MFCC in sealing but rather a question of the resulting microstructure at the surface of the concrete following application of the MFCC. Thus effective concrete curing guidelines should consider the mix type and the state of the concrete surface at the time of MFCC application.

• Record URL:
  http://wisdotresearch.wi.gov/project?id=57
• 
• Corporate Authors:

  University of Wisconsin, Madison

  Department of Civil and Environmental Engineering
  1415 Engineering Drive
  Madison, WI  United States  53706

  Wisconsin Department of Transportation

  Division of Business Services, Research Coordination Section
  4802 Sheboygan Avenue
  Madison, WI  United States  53707

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Kropp, Ramsey
  • Cramer, Steven M
  • Anderson, Marc
• Publication Date: 2012-6

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Bibliography; Figures; Photos; Tables;
• Pagination: 53p

Subject/Index Terms

• TRT Terms: Concrete pavements; Curing agents; Evaporation; Freeze thaw durability; Laboratory studies; Scaling (Concrete); Slag cement
• Subject Areas: Highways; Materials; Pavements; I24: Design of Bridges and Retaining Walls; I30: Materials;

Filing Info

• Accession Number: 01473054
• Record Type: Publication
• Report/Paper Numbers: WHRP 12-02
• Contract Numbers: WisDOT SPR# 0092-11-05
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Feb 19 2013 3:03PM