2022 Fiscal Year Research-status Report
Development of a simplified nondestructive method for in-situ evaluation of the cover concrete quality and durability design.
| Project/Area Number |
22K14308
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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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| Keywords | Cover Concrete / Concrete Duability / Air permeability / Nondestructive test / In-situ measurement |
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| Outline of Annual Research Achievements |
I have conducted some preliminary laboratory experiments to determine the impact of measurement temperature on WIST results. Specifically, some of the available specimens were preserved in an environmental chamber in order to conduct WIST measurements at four different temperatures (i.e. 5, 20, 30, and 35 °C). Some of the findings were published in the Construction and Building Materials journal. In addition, various concrete specimens were prepared for other experimental measurements. Before being placed in the environmental chamber, the specimens were processed and dried to the proper level in a room. The influence of measurement temperatures and relative humidities on the WIST results has been prepared for bulk experiments in the fiscal year 2023. Some in-situ measurement conditions with different temperatures and relative humidities were prepared.
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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 running rather smoothly.
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| Strategy for Future Research Activity |
The impact of relative humidity, rain, sun radiation, wind, and their combinations on the WIST results is being investigated concurrently using comparable methodologies. Some obtained results will be continue analyzed for publishing in ISI journals and conferences.
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| Causes of Carryover |
Analysis of the obtained results has taken longer time than estimated plans. This leads to some publications (ISI Journals and conferences) have not finished in the fiscal year 2022 and moved to the fiscal year 2023. As a result, the budget has not been used as the original estimation.
The remaining budget will be used for long-term experimental measurements, publication fees, transportation expenses, and accommodation expenses for in-situ measurement in the fiscal year 2023.
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