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상수도시설 콘크리트 수조구조물에서의 염화이온 침투저항 특성분석
곽규성,마승재,최성민,오상근,Kwak, Kyu-Sung,Ma, Seung-Jae,Choi, Sung-Min,Oh, Sang-Keun 한국건설순환자원학회 2015 한국건설순환자원학회 논문집 Vol.3 No.2
The purpose of this study is to understand the necessity for waterproofing and corrosion-resistant technique application on concrete water tank used in water supply. Relevant research materials and regulation were collected, reviewing for the case studies of sample structures aged over 20 years, and experimental studies on chloride conduction for the high performance concrete and penetration properties of water repellency of liquid type materials. The result is that the concrete water tank in the water supply is needed for waterproofing and corrosion-resistant material coating to maintain long term durability due to the constant environmentally induced degradation deterioration often caused by chloride attack. 본 논문에서는 국내 외 관련 문헌 자료 및 규정에 대한 고찰과, 20년 이상 된 수조 구조물 현장의 사례 조사를 통해 수밀 콘크리트와 침투방지재의 염소이온 투과에 대한 실험적 평가 등을 통하여 결론을 도출하고. 방수층 및 부식저항기술을 음용수조 구조물(상수조 등)의 각 시설물별 방수 방식에 대한 성능을 동시에 만족하여야 할 필요성을 정립하는 것이다. 이는 수조 구조물들이 방수 및 침투방지재가 확실히 필요하다는 사실을 확언 할 수 있고, 또한 여러 가지의 콘크리트 침식을 발생시키는 요소와 원인들에서부터 장기적인 내구성을 화보할 수 있다.
오존을 이용한 고도정수 처리용 콘크리트 수조구조물 내부 방수ㆍ방식재의 오존열화 평가방법 제안 연구
곽규성(Kwak Kyu-Sung),서현재(Seo Hyun-Jae),미야우치 히로유키(Miyauchi Hiroyuki),김규용(Kim Gyu-Yong),오상근(Oh Sang-Keun) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.9
This study is on a suggestion of the evaluation method of O₃ deterioration of waterproofing and corrosion prevention materials in concrete facility for advanced water treatment using ozone(O₃) sterilization. Generally, drinking water has been sterilized with chlorine. But chlorine is not removed by means of smell and taste and organic pollutants such as ammonia nitrogen. So, in advanced water treatment, ozone (O₃) treatment, biological treatment and activated carbon are using for remove of smell and sterilization of drink water. And this advanced water treatment facility(structure) is made with concrete. For the protection of concrete from chemical attack by chloride, generally so many materials had been used on concrete surface as corrosion protection coatings. But strong oxidation of ozone decrease the durability of rubber or resin materials applied on the surface of concrete, those materials attacked by ozone (O₃) are uncleared weather have the corrosive protection effect of not, and also there is not the evaluation or test methods about ozone effect to materials. So, in this study, some ozone test methods are suggested for evaluation of ozone (O₃) influence to corrosive protection materials.
上水道 콘크리트 構造物 最適 維持管理를 위한 內部 防水/防蝕材의 附着强度 性能等級 設定에 관한 實驗的 硏究
곽규성(Kwak Kyu-Sung),서현재(Seo Hyun-Jae),미야우치 히로유키(Miyaushi Hirouki),김규용(Kim Kyu-Young),오상근(Oh Sang-Keun) 대한건축학회 2011 大韓建築學會論文集 : 構造系 Vol.27 No.7
It has been very difficult to choose suitable engineering method for concrete tank of water distribution because the guidelines of design standard, construction and quality control are unclear until yet. So, the evaluation method with required performance and election criteria for waterproof and anti-corrosion is necessary. In this study, 12 types of waterproof and anti-corrosion methods are evaluated with bond strength in the conditions of wet/dry, chemical agents deposition, ozone exposure treatment, and freezing and thawing. Based on the test results, performance rating method of bond strength with pre-conditions is developed with standard normal distribution and probability density function by applying 2σ. Also, evaluation matrix mechanism can be established for optimal performance requirements and reliable waterproof and anti-corrosion methods.
규산질계(硅酸質系) 분체형(粉體型) 침투성(侵透性) 도포방수재(塗布防水材)의 부착성(附着性) 평가(評價)에 관(關)한 기초적(基礎的) 연구(硏究)
郭奎成 ( Koak Kyu Sung ),金上甲 ( Kim Sang Gab ),李東烈 ( Lee Dong Ryul ),吳祥根 ( Oh Sang Keun ) 한국구조물진단유지관리공학회 1997 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.1 No.1
This study deals with the effect on bond strength properties of waterproofing layer and mortar or concrete substrate applicated by Siliceous Slurry Coatings waterproofing materials. Properties of bond strength change condition of concrete substrate, temperature, moisture and curing and so on. The purpose of this study is that it makes the estimation value of bond strength of concrete wall and anticorrosive lager when coated siliceous slurry coatings as waterproofing materials for durability performance estimation depend on concrete watertightness.
15년 이상 경과한 공동주택 옥상에서 노후화된 방수층 보호 콘크리트의 실태 조사에 관한 기초적 연구
곽규성(Kwak Kyu-Sung),구경모(Koo Kyung-Mo),오상근(Oh Sang-Keun),배기선(Bae Kee-Sun),김규용(Kim Gyu-Yong) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.10
The generally apartment houses in the 1980s are comprised of the topping concrete of the flat-roof. These topping concrete is requires advanced quality control of durability, because it directly is subjected to the deterioration factors of environments. However, the topping concrete is not correct a standard specification and a maintenance guidelines by reason of the nondearing structures. In addition, it is in bad keep the document for the mixing ratio site and thickness of the topping concrete. Therefore, the topping concrete is required standard valuation to decide whether is retention or not for repair works. As a result of actual state on the field, most topping concrete is occurred to deteriorate the surface crack, spalling, and pop-out scaling etc. Moreover, it is evaluated to the deterioration of general topping concrete through the freezing-melting, rebound test, neutralization, alkalinity, air void, and X-ray diffraction. These results lead us to the conclusion that the main cause of deteriorated topping concrete was decided that wouldn't be fulfilled quality control of concrete and was founded to accelerate deterioration of topping concrete for the neutralization and freezing-melting.
규산질계 씰러가 콘크리트 표층부 강화에 미치는 영향에 관한 기초적 연구
최성민 ( Choi Sung Min ),곽규성 ( Kwak Kyu Sung ),오상근 ( Oh Sang Keun ),안상덕 ( An Sang Duck ),박국배 ( Park Kuk Bae ) 한국구조물진단유지관리공학회 1998 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.2 No.1
This study deals with the effect on penetration properties of siliceous ion througth the mortar applicated by the waterproofing coating materials of siliceous seler liquid type. The tests of properties for reinforcing effect in mortar substrate surface layer are five kinds of water permeability, absorption, compressive strength, surface layer strength. Water permeanbility of mortar coated siliceous sealer in very than that of plane mortar. Compressive strength of mortar coated siliceous sealer is larger than that of plane mortar about 10%