Study on the corrosion of steel bar in ASR affected concrete structure affected by de-icing salts

2014 Fiscal Year Final Research Report

• Project/Area Number: 24760346
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Kanazawa University
• Principal Investigator: KUBO Yoshimori 金沢大学, 環境デザイン学系, 准教授 (50324108)
• Research Collaborator: HASHIZUME Yasunori ; KAMAMOTO Takehiro ; MOMIYAMA Yoshiyuki ; ISHIKAWA Yuichi ; KIKUCHI Toru
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: コンクリート / アルカリ骨材反応 / 塩害 / 複合劣化 / 維持管理

Outline of Final Research Achievements

It is serious and important problem on maintenance of concrete structure deteriorated by
Alkali-silica reaction (ASR) and chloride induced corrosion. On the occurrence of the combined deterioration of concrete structure due to ASR and chloride induced corrosion, the evolution of degradation of concrete structure is not cleared. In this study, the main scope was forced on the permeation of chloride ion and the corrosion in concrete structure affected by the combined deterioration. As the results, it is indicated that cracks caused by the expansion due to ASR may promote the degradation due to chloride induced corrosion.

Free Research Field

コンクリート工学，材料科学，維持管理工学