ACCELERATED TEST DEVELOPMENT FOR PORTLAND CEMENT CONCRETE

A satisfactory accelerated concrete strength test method has been developed. The method, called 'autogenous curing', consists of placing a fresh 6 x 12-inch concrete cylinder in an insulated enclosure for a 48-hour curing period, then testing for compressive strength. The developed 48-hour compressive strengths are 40 to 75 percent of the 28-day standard moist cured compressive strengths. This method can be used for concrete quality control and acceptance. In the laboratory, a series of tests were designed to determine the magnitude and direction that changes in cement quantity and types, aggregates, temperature, and admixtures would have on the correlation between the 48-hour cure strength and the 28-day standard moist cured strength. Analyses of the data indicated that a new strength correlation curve should be established when any changes are made in the concrete.

• Corporate Authors:

  California Department of Transportation

  Transportation Laboratory
  5900 Folsom Boulevard
  Sacramento, CA  United States  95819

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Bailey, S N
  • Neal, B F
• Publication Date: 1976-4

Media Info

• Pagination: 63 p.

Subject/Index Terms

• TRT Terms: Accelerated tests; Compression tests; Compressive strength; Concrete curing; Concrete pavements; Pavements; Portland cement; Portland cement concrete; Quality control
• Old TRIS Terms: Compressive strength tests
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 00143024
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: CA-DOT-TL-518217522 Final Rpt., 635182
• Files: NTIS, TRIS, USDOT, STATEDOT
• Created Date: Oct 6 1976 12:00AM