Development of versatile deterioration prediction method of deteriorated concrete by chemical attack based on the deterioration mechanism of cement hydrates

2014 Fiscal Year Final Research Report

• Project/Area Number: 25889005
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Tohoku University
• Principal Investigator: MIYAMOTO Shintaro 東北大学, 工学(系)研究科(研究院), 助教 (60709723)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Keywords: 化学的侵食 / 空隙構造 / 相組成 / 硫酸イオン / 塩化物イオン

Outline of Final Research Achievements

For the prediction with a high degree of accuracy to the chemical deterioration of the hardened cement , it is necessary to consider the transform of the cement hydrates. Moreover, since the actual environment is complex, in order to construct a deterioration prediction model, it is necessary to consider the applicability of the model in various environments. In this study, it was discussed that the relationship between fluctuate the effective diffusion coefficient and the deterioration of the cement hydrates. In addition, it was discussed on the experimental and theoretical analytic that the transform of the cement hydrates in the environment of the coexistence of chloride ion and sulfate ion.

Free Research Field

コンクリート工学