2022 Fiscal Year Final Research Report
Studying on mitigation mechanism of LiNO2 on ASR and reinforcement corrosion and its structural application
| Project/Area Number |
20H02222
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 22010:Civil engineering material, execution and construction management-related
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| Research Institution | University of Miyazaki |
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Principal Investigator |
LI CHUNHE 宮崎大学, 工学部, 准教授 (80431724)
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| Co-Investigator(Kenkyū-buntansha) |
王 眺 東京大学, 大学院工学系研究科(工学部), 特任助教 (70822386)
高橋 佑弥 東京大学, 大学院工学系研究科(工学部), 准教授 (10726805)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 亜硝酸リチウム / ASR / 鉄筋腐食 / 反応性シリカ / 酸化反応 / 複合劣化 |
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| Outline of Final Research Achievements |
In this study, we investigated the ASR of lithium nitrite and the elucidation of the steel corrosion inhibition mechanism. Specifically, the mechanism of ASR was clarified, and the mechanism of ASR and steel corrosion inhibition by lithium nitrite was elucidated through solution immersion studies and accelerated experiments on specimens.
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| Free Research Field |
コンクリート工学
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| Academic Significance and Societal Importance of the Research Achievements |
コンクリート構造物の主な劣化現象となるASRと鋼材腐食のメカニズムの解明と亜硝酸リチウム使用による上記劣化現象の抑制メカニズムを解明した．その結果，ASRおよび鋼材腐食を受けたコンクリート構造物の補修問題において理論的な根拠を提供し，より経済的により的確に構造物の長寿命化が可能となった．
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