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다양한 전처리 기술을 적용한 유리 골재의 알칼리-실리카 반응
손연방 ( Sun Lianfang ),김홍현 ( Kim Honghyun ),변정안 ( Byun Jungan ),지광습 ( Zi Goangseup ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.2
The focus of this study is to investigate the ASR of concrete incorporating pre-treated soda-lime glass as aggregates. The glass aggregates were pre-treated with three different techniques, i.e. Ca(OH)2, NaOH and the mixed solution. The results indicate that all the pre-treatment techniques showed a decrease effect on ASR and such an effect increase with treatment time, the mixed solution showed the best effect. The pre-treated glass aggregate at the mixed solution at 80℃ for 7 days providing a 45% reduction in the expansion caused by ASR, and it can be considered innocuous based on ASTM C1260.
김홍현 ( Kim Honghyun ),고원희 ( Goh Wonhui ),변정안 ( Byun Jungan ),지광습 ( Zi Goangseup ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.1
This research provides techniques for the implementation of an integrity evaluation system developed for wind turbine structures to jack-up barge. The strain values obtained from the upper tip of the footing are to be converted into values at a single point in order to represent the structural behavior. These obtained values are evaluated simultaneously through P-M curve, generated by FEM results. Evaluating loads with P-M curve, structural stability of barge could then be monitored.