Treatment of Reinforcing Bars During Construction of Concrete Structures to Prevent Corrosion

Information

• NSF Award
• 9060112

Owner

• GINER, INC., A MA CORP

• Award Id

  9060112

• Award Effective Date

  1/1/1991 - 33 years ago

• Award Expiration Date

  9/30/1991 - 32 years ago

• Award Amount

  $ 50,000.00

• Award Instrument

  Standard Grant

The corrosion of steel reinforcing bars in concrete structures is a problem with multi-million dollar impact in both the private and public sectors. Chloride intrusion from natural (seawater or marine environments) or man-made (deicing salts) sources contributes to the breakdown of the protective iron oxide film on the steel. The subsequent reactions create voluminous corrosion products, causing cracking and spalling of the overlying concrete and reducing the effective strength of the entire structure. In the proposed program, an electrochemical method for enhancing the corrosion resistance of the rebar during the initial concrete curing period will be investigated. The method is in situ passivation of the rebar surface by application of an anodic potential. This treatment will enhance the protective iron oxide film on the rebar by making it thicker and more uniform. The effectiveness of this treatment in enhancing the corrosion resistance of rebar will be evaluated in simulated environments and in mortar-rebar samples.

• Program Officer

  Ritchie B. Coryell

• Min Amd Letter Date

  1/15/1991 - 33 years ago

• Max Amd Letter Date

  1/15/1991 - 33 years ago

• ARRA Amount

• Name

  GINER, INC.

• City

  Auburndale

• State

  MA

• Country

  United States

• Address

  89 RUMFORD AVE

• Postal Code

  024666131

• Phone Number

  7815290500

• First Name

  Nancy

• Last Name

  Kackley

• Start Date

  1/1/1991 12:00:00 AM

• Name

  Industrial Technology

• Code

  308000