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조명석 ( Cho Myung Suk ),송영철 ( Song Young-chul ),노재명 ( Noh Jea-myoung ),김도겸 ( Kim Do-gyum ) 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.2
It was proved of the performance and applicability of the organic and inorganic surface penetration supplement developed for aging prevention and durability performance by the used years of concrete structure through experimental method. This article synthesized an inorganic material, TEOS (tetra-ethoxyorthosilicate) and organic material, Acrylate monomer in a way of solution poly-condensation method, induced the performance betterment effect of concrete through the endurance performance improvement of silicate by sol-gel process, and the formation of a soft and flexible impact buffer layer by an organic monomer, and improved aging inhibition performance after concrete penetration by adding Isobutyl-orthosilicate as a performance improvement substance. The developed organic and inorganic surface penetration supplement refills concrete internal gap with physically, chemically stable compounds after penetration, has a high effect in increasing pressure strength by concrete reinforcement, improving durability to use environmental aging factors such as damage from sea wind, carbonation, freezing and fusing and multiple aging, so it is available as the effective life management technique of concrete structure.
조명석(Cho Myung suk),송영철(Song Young-Chul),노재명(Noh Jea-Myoung),김도겸(Kim Do-Gyum) 한국구조물진단유지관리학회 2006 한국구조물진단학회 학술발표회논문집 Vol.10 No.2
It was proved of the performance and applicability of the organic and inorganic surface penetration supplement developed for aging prevention and durability performance by the used years of concrete structure through experimental method. This article synthesized an inorganic material, TEOS (tetra-ethoxyorthosilicate) and organic material, Acrylate monomer in a way of solution poly-condensation method, induced the performance betterment effect of concrete through the endurance performance improvement of silicate by sol-gel process, and the formation of a soft and flexible impact buffer layer by an organic monomer, and improved aging inhibition performance after concrete penetration by adding Isobutyl-orthosilicate as a performance improvement substance. The developed organic and inorganic surface penetration supplement refills concrete internal gap with physically, chemically stable compounds after penetration, has a high effect in increasing pressure strength by concrete reinforcement, improving durability to use environmental aging factors such as damage from sea wind, carbonation, freezing and fusing and multiple aging, so it is available as the effective life management technique of concrete structure.
이홍표 ( Lee Hong Pyo ),조명석 ( Cho Myung Sug ),이금석 ( Lee Geum Suk ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.1
There are two kinds of post-tensioning system for nuclear power plants. one is bonded-type and the other is unbonded-type post-tensioning system. It is difficult to directly evaluate the effective tensile force of tendon in the case of bonded-type. Therefor, it can be evaluated by system identification(SI) method. In order to use SI technique, it should be obtained the strain measurement results of the containment building wall. This paper is mainly focused on the stain measurement according to the internal pressure of containment building using fiber optic sensor and tried to use it as a basic data of the SI technique in the future.
동해를 받는 원전 콘크리트 구조물의 열화 예측에 관한 연구
고경택 ( Koh Kyung-taeg ),이종석 ( Lee Jong-suk ),김도겸 ( Kim Do-gyeum ),김성욱 ( Kim Sung-wook ),조명석 ( Cho Myung-suk ),송영철 ( Somg Yung-chul ) 한국구조물진단유지관리공학회 2001 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.5 No.1
In general, the deterioration induced by the freezing and thawing cyclic in concrete structures often leads to the reduction in concrete durability by the cracking or surface spalling. If it can prediction of concrete deterioration subjected to cyclic freezing and thawing, we can rationally do the design of mix proportion in view of concrete durability and the maintenance management of concrete structures. Therefore in this study a prediction model of deterioration for concrete structures subjected to the irregular freezing and thawing is developed from the results of accelerated laboratory freezing and thawing test using the constant temperature condition and the in-situ weathering data for concrete structures of nuclear power plant.