|Table of Contents|

Durability Maintenance Effect of Migrating Corrosion Inhibitor on Carbonized Concrete(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2011年03期
Page:
1-8
Research Field:
Publishing date:
2011-09-20

Info

Title:
Durability Maintenance Effect of Migrating Corrosion Inhibitor on Carbonized Concrete
Author(s):
QU Wen-jun1;  WANG Zhe2;  WEN Hua-jie3
1. Department of Building Engineering, Tongji University, Shanghai 200092, China; 2. China State Construction Engrg Ltd, Beijing 100125, China; 3. Department of Civil & Environmental Engineering, Washington State University, Pullman WA99164, Washing
Keywords:
carbonized concrete;  durability maintenance;  polarization resistance of steel;  migrating corrosion inhibitor;  corrosion rate
PACS:
TU528
DOI:
-
Abstract:
Based on the known properties of surface-applied migrating corrosion inhibitor(MCI), including basic concept, physical performance, penetration mechanism and effectiveness, protection mechanism and effectiveness, and the influence on concrete material, the test of protection effectiveness of MCI on steel in carbonized concrete was designed and performed. Based on the test data, durability maintenance effects of MCI in the situation of carbonization and carbonization as well as chloride intrusion were discussed, influences of MCI on carbonization speed and alkalinity of concrete pore solution were also discussed, protection mechanism of MCI on steel in the situation of carbonization was analyzed, and effectiveness comparisons of different application methods of MCI were made. The test results show that MCI effects by forming protection layer around steel, the effectiveness concerns depth of carbonization, chloride content and application method. MCI applied at early stage of carbonization can effectively protect steel in long-term. MCI has nothing to do with carbonization rate of concrete.

References:

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Last Update: 2011-09-20