Study on alkali silica reaction controlling effect of calcium propionate under severe environment

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420465
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Aichi Institute of Technology
• Principal Investigator: IWATSUKI EIJI 愛知工業大学, 工学部, 教授 (10278228)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: コンクリート / アルカリシリカ反応 / 反応抑制 / プロピオン酸カルシウム / 耐久性

Outline of Final Research Achievements

Alkali silica reaction (ASR) that was one of the concrete degradation phenomena became an object of public concern 1983 years. The control measures are executed in 1986, and a reactive case is reported now. Therefore, the development of an easier, handier control method is hoped for, and it has been clarified that the method of adding a small amount of calcium propionate is experimentally examined, and there is a controlling effect.
In this study, the ASR controlling effect of calcium propionate was confirmed from the result of the experiment by a severe environmental condition that the environment, salt water, and the alkaline solution for a long-term outdoor weathering are supplied from the outside.

Free Research Field

工学