ANCHORAGE AND DEVELOPMENT OF REINFORCEMENT IN CONCRETE MADE USING SUPERPLASTICIZERS. INTERIM REPORT

A research program was developed which allows the study of the effect of naphthalene and melamine-based superplasticizers on the material properties of concrete, as well as the bond behavior between concrete and reinforcement. Bond behavior was studied through pullout tests. Slump, bleed, temperature, air content, and the compressive and tensile strength of the fresh concrete were monitored, both before and after the addition of superplasticizer. The results of this study indicate that the addition of naphathalene or melamine-based superplasticizer to concrete does not detrimentally affect the bond performance of reinforcing steel embedded in that concrete. However, it does affect the concrete's rheological properties, i.e., bleed and air content. Therefore, trial batches should be under expected job conditions when superplasticizer is to be used to ensure proper concrete performance.

• Corporate Authors:

  University of Texas, Austin

  Center for Transportation Research, 3208 Red River Street
  Austin, TX  United States  78705

  Texas State Department of Highways & Public Transp

  P.O. Box 5051
  Austin, TX  United States  78763

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Musser, P L
  • Carrasquillo, R L
  • Jirsa, James O
  • Klingner, R E
• Publication Date: 1985-9

Media Info

• Pagination: 212 p.

Subject/Index Terms

• TRT Terms: Air content; Anchorages; Bleeding; Bonding; Compressive strength; Concrete; Material reinforcement; Physical properties; Pull out test; Reinforced concrete; Rheological properties; Slump test; Strength of materials; Superplasticizers; Temperature; Tensile strength
• Uncontrolled Terms: Concrete properties; Concrete strength; Slumps
• Old TRIS Terms: Melamine
• Subject Areas: Geotechnology; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00457800
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: FHWA/TX-86/34+383-1
• Files: TRIS, USDOT, STATEDOT
• Created Date: Aug 31 1986 12:00AM