DEVELOPMENT OF GEL COMPOSED INHIBITOR AGAINST CHLORIDE ATTACK IN A TRANSMISSION LINE SHIELD TUNNEL

It is concerned that salt damage due to water leakage happens at a RC shield transmission tunnel nearby bay area. To prevent this corrosion, gel composed inhibitor have been developed. By this gel, corrosion inhibitor permeates through the concrete surface and guard reinforcement against chloride at...

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Bibliographic Details
Published inCement Science and Concrete Technology Vol. 78; no. 1; pp. 372 - 380
Main Authors SHINOGUCHI, Saeko, WATANABE, Tomomi, MIYAZATO, Shinichi, OKA, Shigeaki
Format Journal Article
LanguageEnglish
Japanese
Published Japan Cement Association 31.03.2025
Subjects
Advection zone
Diffusion zone
Gel
Nitrite ions
Salt damage
Thickening
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Summary:It is concerned that salt damage due to water leakage happens at a RC shield transmission tunnel nearby bay area. To prevent this corrosion, gel composed inhibitor have been developed. By this gel, corrosion inhibitor permeates through the concrete surface and guard reinforcement against chloride attack. This gel, however, is optimized for conventional concrete whose W/C is around 55％. In this study, we developed gel composed inhibitor, which is capable of penetrating corrosion inhibitors into concrete whose W/C is lower such as 35％.
ISSN:0916-3182
2187-3313
DOI:10.14250/cement.78.372