NEW HIGH EARLY STRENGTH CONCRETE

The paper reports on a development that grew out of refractory bonding programs oriented toward chemically bonded refractories. The bonding concept of this novel concrete is based on an acid-base reaction. The rate of reaction is controlled by the proper selection of magnesia and of a complex phosphate liquid. The balance or major portion of the concrete is composed natural aggregates. With proper mixing, setting times are on the order of seven minutes at room temperature. The crushing strengths should exceed 2000 psi for fine aggregates after two hours and can exceed 3500 psi by increasing aggregate size. Testing has shown good freeze-thaw and successful autoclave testing. Not shown by traditional testing is the ability of this concrete to bond to many articles such as itself, old concrete, steel, wood, and paper. Another benefit is the cold weather working capabilities. Preliminary experience in applying this concrete has been in a bridge deck on an interstate highway in cooperation with the District 12, State of Ohio, bridge engineers.

• Supplemental Notes:
  • Proceedings of American Concrete Institute Annual Meeting: Roadways and Airport Pavements, San Francisco, California, March 30-April 5, 1974.
• Corporate Authors:

  American Concrete Institute

  P.O. Box 19150, Redford Station, 22400 Seven Mile Road
  Detroit, MI  United States  48219
• Authors:
  • Russell, R O
• Publication Date: 1975

Media Info

• Pagination: p. 269-278
• Serial:
  • Publication of: Road Traffic Safety Research Council, New Zealand
  • Publisher: Road Traffic Safety Research Council, New Zealand

Subject/Index Terms

• TRT Terms: Autoclave curing; Bridge decks; Chemical bond; Coatings; Cold weather; Concrete; Crushed aggregates; Freeze thaw tests; High early strength cement; High strength materials; Operations; Phosphates; Refractory materials; Testing
• Uncontrolled Terms: High early strength concrete
• Old TRIS Terms: Autoclaving; Fast setting concrete; Phosphate coatings; Refractories
• Subject Areas: Administration and Management; Highways; Materials;

Filing Info

• Accession Number: 00165197
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: SP51-15 Proceeding
• Files: TRIS
• Created Date: Mar 29 1978 12:00AM