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Evaluation of two corrosion inhibitors using two surface application methods for reinforced concrete structures.

File Language:
English


Details

  • Creators:
    Sharp, Stephen R
  • Corporate Creators:
  • Subject/TRT Terms:
  • Publication/ Report Number:
    VTRC 05-R16
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Virginia
  • Edition:
    Final report;July 1, 2003Nov. 30, 2004.
  • Corporate Publisher:
    Virginia Transportation Research Council (VTRC)
  • Abstract:
    This study investigated the use of penetrating corrosion inhibitors to extend the life of existing reinforced concrete bridge decks. The use of assisted (vacuum/pressure injection) and unassisted (diffusion) treatment methods and two inhibitors were evaluated. The inhibitors were FerroGard 903, from Sika Corp., and TPS-II, from Surtreat International. Testing was performed on exposure slabs with 15 lb/yd3 of NaCl in the top layer and no NaCl in the bottom layer. The slab design was a variation of the specimen design provided in ASTM G109, with each slab containing nine steel reinforcing rods instead of three. The exposure slabs had either a uniform cover over the top pieces of steel or an inclined cover over the steel. TPS-II was also evaluated on the deck of a bridge in Orange County, Virginia. The study found that when applied to the concrete surface, neither inhibitor penetrated the concrete to reach the steel reinforcement. The vacuum/pressure injection method showed promise but requires refinement. In addition, based on macro-cell measurements, a sufficient quantity of inhibitor can be injected into the concrete to reduce the charge passed.
  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:b5ca160ce1f011a3afbce4ea6a3c6442cd93cf11e2e1439b6189522d9d301a5554fae7f52d5fb8b8d8cc289852e4f24b203fd738d0063f7ce881775106beafbc
  • Download URL:
  • File Type:
    Filetype[PDF - 2.64 MB ]
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