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양생온도 5℃에서 봉함양생방법에 따른 콘크리트의 온도 및 압축강도 특성
배기훈 ( Bae¸ Ki-hun ),박준형 ( Park¸ Jun-hyoung ),김진만 ( Kim¸ Jin-man ) 한국건축시공학회 2021 한국건축시공학회 학술발표대회 논문집 Vol.21 No.2
According to the domestic specification, the curing of the specimen for strength management used to determine the time of the mold deformity of the structure concrete in early spring and early autumn is cured in the field structure condition. However, when the seal curing is performed in the field, the temperature of the specimen is very low compared to the temperature of the actual structure, so the strength of the structure concrete predicted based on the strength of the specimen is much undervalued than the actual one, which causes the mold to be deformed. Therefore, this study analyzed the temperature history and compressive strength characteristics of the specimen for strength management through other sealing curing at 5°C and concrete of the actual structure, and presented the most suitable curing method.
다양한 반응조건에서의 메틸갈레이트의 벤질화에 대한 연구
배기훈 ( Gi Hun Bae ),강동욱 ( Dong Wook Kang ) 대구가톨릭대학교 자연과학연구소 2017 자연과학연구논문집 Vol.15 No.1
Methyl 3,4,5-tribenzyloxybenzoate is a product obtained by the benzylation of methyl gallate and an important intermediate for the preparation of gallic acid coupling compounds. We tried benzylation of methyl gallate according to conventional method, but the yield was considerably low. In the study, we investigated to optimize the benzylation of methyl gallate in various reaction conditions.