PROPOSAL OF PREVENTION METHOD FOR RE-DEGRADATION NEAR KNOCK DOWN PART USING SILANE TYPE PENETRANTS

DOI 1 Citations

Bibliographic Information

Other Title
  • シラン系含浸材を用いた叩き落し部近傍の再劣化低減工法の提案

Abstract

 A part of cover concrete in the slab at road bridges may exfoliate by the chloride induced deterioration. These dangerous concretes are knocked down because of the prevent for the hazards for third party. Therefore, the rust inhibitor with the zinc to the exposed rebar is treated. However, re-degradation occurs, when chloride ions remain in the base concrete. Based on the above backgrounds, this study proposes the method to reduce the re-degradation by the increase of the electrical resistance between the knock down part and the base concrete using silane type penetrants. First, feasibility studies are conducted using mortar and concrete specimens. Next, the test is conducted using slab cut from the road bridge. It can be confirmed that the after the knock down is decreased for about 6.5 year. As a result, the method proposed in this study is effective as the emergency treatment for the slab with chloride induced corrosion.

Journal

Citations (1)*help

See more

Keywords

Details 詳細情報について

  • CRID
    1390282680331919488
  • NII Article ID
    130004962062
  • DOI
    10.2208/jscejmcs.70.19
  • ISSN
    21856567
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

Report a problem

Back to top