2021 Fiscal Year Final Research Report
Clarification of the effect of surface penetrant material on composite deterioration of concrete structures using chemical analytical methods
| Project/Area Number |
19K04560
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Review Section |
Basic Section 22010:Civil engineering material, execution and construction management-related
|
|---|
| Research Institution | Kansai University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
丸山 徹 関西大学, 化学生命工学部, 教授 (80330174)
|
|---|
| Project Period (FY) |
2019-04-01 – 2022-03-31
|
| Keywords | 表面含浸材 / 併用法 / アミノ基 / 劣化対策 / 表面保護工 |
|---|
| Outline of Final Research Achievements |
In confirming the basic physical properties and deterioration inhibition effect of the specimen coated with the surface penetrant material, the silane-based one having an amino group has an excellent carbonation inhibition effect as compared with other silane-based ones in the outdoor exposure test. It was confirmed that when used in combination with other silane-based ones, a high inhibition effect on the complex deterioration of carbonation and chloride induced deterioration can be obtained. In the confirmation of the composition change of the surface penetrant material coating part using chemical analysis, it was possible to confirm the composition change by utilizing SEM-EDX analysis, Raman spectroscopy, and FT-IR. In the discussion of the deterioration inhibition effect of the surface penetrant material, it was confirmed from the analysis results that a part of the deterioration inhibition mechanism could be clarified.
|
| Free Research Field |
土木工学
|
| Academic Significance and Societal Importance of the Research Achievements |
研究成果により、けい酸塩系表面含浸材とシラン系表面含浸材を併用することで、中性化と塩害の複合劣化により優れた抑制効果を発揮させることが可能になることが明確となり、その劣化抑制機構を説明するための糸口が得られた。コンクリートの分野においては化学分析の適用実績が多くなく、複合材料であるコンクリートの分析自体が難しいこともあり、どの分析法が有効であるかさえ明確になっていない部分が大きかったが、今回の検討によりいくつかの分析法が有効であることがわかった。さらに、分析を工夫しデータを蓄積することで、より多くのことがわかり、表面含浸工法の劣化抑制機構の明確化や工法の信頼性向上につながると考えられる。
|
