CORROSION INHIBITING PROPRETIES OF PORTLAND AND PORTLAND-POZZOLAN CEMENT CONCRETES

Within the framework of studying corrosion protective properties of concrete with admixtures and additives, concretes with various amounts of flyash were tested and evaluated. Cylindrical specimens with a centrally located reinforcing bar were exposed in a 5 percent NaCl solution after various curing periods and curing procedures. An impressed current test method was used to accelerate the corrosion process. Time to cracking and the current flow were measured and total energy requirements to induce failure calculated. Other variables studied included sorption, resistivity, strength, consistency, and time to visual cracking failure of the specimens. Test results indicated that flyash pozzolanic material as an additive or an admixture improves the property of the concrete to prevent corrosion of the imbedded reinforcing steel.

• Corporate Authors:

  Florida Department of Transportation

  Haydon Burns Building, 605 Suwanee Street
  Tallahassee, FL  United States  32301
• Authors:
  • Larsen, T J
  • McDaniel Jr, W H
  • Brown, R P
  • Sosa, J L
• Publication Date: 1976-6

Media Info

• Features: Figures; Tables;
• Pagination: 44 p.

Subject/Index Terms

• TRT Terms: Admixtures; Concrete; Concrete curing; Corrosion protection; Cracking; Electrical resistivity; Fly ash; Portland cement concrete; Portland pozzolan cement; Reinforcing steel; Sorption; Strength of materials
• Uncontrolled Terms: Concrete cracking
• Old TRIS Terms: Resistivity
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00098560
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FHWA-76-2- 74
• Files: TRIS, STATEDOT
• Created Date: Aug 27 1975 12:00AM