http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
염해 열화된 콘크리트 구조물의 단면복구용 보수재료의 정량적 성능 기준 설정 및 최적선정 모델링
도정윤 ( Do Jeong-yun ),김두기 ( Kim Doo-kie ),송훈 ( Song Hun ),소승영 ( So Seung-young ),소양십 ( Soh Yang-seob ) 한국구조물진단유지관리공학회 2007 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.11 No.2
The durability of concrete repairs depends mainly on the correct choice and use of repair materials. Some studies related to the selection of repair materials are advocating as a fundamental principle, that is, repair like with like. This is, however, very illogical and not an engineering approach. This study is interested in configuring the minimum performance criteria and modeling the optimal selection of repair materials for chloride-deteriorated concrete structure. As the result of the study, the useful evaluation equation for optimal repair selection was formulated as below. [(0.034×R21)+(0.142×R22)+(0.240+R23)]+[(0.128×R24)+(0.033×R25)+(0.075+R26)+(0.01×R27)+(0.01+R28)+(0.024+R29)] The variables in this equation are divided into two parts, the required chemical performance and the required physical performance, respectively. The former is composed of alkali-resistance, chloride permeability and electrical resistivity. The latter is composed of compressive strength, tensile strength, adhesive strength, drying shrinkage, elasticity and thermal expansion.
Fly Ash 및 Meta-Kaolin을 활용한 내화성 마감재의 고온특성
송훈,추용식,이종규,도정윤,Song, Hun,Chu, Yong-Sik,Lee, Jong-Kyu,Do, Jeong-Yun 한국세라믹학회 2010 한국세라믹학회지 Vol.47 No.3
The serious issue of tall building is to ensure the fire-resistance of high strength concrete. The fire resistant finishing method is necessarily essential in order to satisfy the fire resistance time of 3 h required by the law. The fire resistant finishing method is installed by applying a fire resistant material as a method of shotcrete or a fire resistant board to high strength concrete surface. This method can reduce the temperature increase of the reinforcement embedded in high strength concrete at high temperature due to the installation thickness control. This study is interested in identifying the effectiveness of inorganic alumino-silicate compounds including the inorganic admixture such as fly ash and meta-kaolin as the fire resistant finishing materials through the analysis of fire resistance and components properties at high temperature. The study results show that the fire resistant finishing material composed of fly ash and meta-kaolin has the thermal stability of the slight decrease of compressive strength at high temperature. These thermal stability is caused by the ceramic binding capacity induced by alkali activation reaction by the reason of the thermal analysis result not showing the decomposition of calcium hydrate. Inorganic compounds composed of fly ash and meta-kaolin is evaluated to be very effective as the fire resistance material for finishing to protect the concrete substrate by the reason of those simplicity in both application and manufacture. The additional study about the adhesion in the interface with concrete substrate is necessary for the purpose of the practical application.