| Project/Area Number |
22K14308
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 22010:Civil engineering material, execution and construction management-related
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| Research Institution | Hiroshima University |
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Principal Investigator |
NGUYEN HUU・MAY 広島大学, 先進理工系科学研究科(工), 助教 (50912739)
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| Project Period (FY) |
2022-04-01 – 2025-03-31
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| Project Status |
Granted (Fiscal Year 2023)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2024: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | Cover concrete / Concrete Durability / Air permeability / Nondestructive test / Water absorption / Carbonation resistance / Cover Concrete / Concrete Duability / In-situ measurement |
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| Outline of Research at the Start |
In this research, the influence of natural conditions (temperature, relative humidity, wind, solar radiation), and structure conditions at measurement time (surface moisture content and surface temperature) on the WIST results will be investigated through three stages to establish a computational model for predicting water penetration. In parallel, correlations among the WIST results and other concrete properties such as carbonation rate, chloride diffusion coefficient, air permeability, and freeze-thaw resistance will be examined to propose a novel durability design approach.
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| Outline of Annual Research Achievements |
I have investigated a new application of WIST to predict concrete's carbonation resistance using the total sprayed water at a moisture content of 5% (rW5). The newly proposed rW5 index emerged as an effective tool for assessing concrete's carbonation resistance. Based on the results obtained, two drafts and reports for two international conferences have almost been finished. In addition, I have started investigating the application of WIST on horizontal surfaces and establishing a novel model predicting carbonation rate based on WIST results. I reported the results at ICCEE 2023 as a keynote speaker.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
Based on careful preparations, the project is launching rather smoothly. Numerous results were obtained and analyzed. SCI publications and reports at international conferences have been prepared.
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| Strategy for Future Research Activity |
I will finalise the two drafts and send them to an English editing service before submitting them to the journals. In addition, additional data will be collected to check the prediction model. I will attend three international conferences to report the results.
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