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산업부산물을 다량 사용한 콘크리트의 압축강도 발현 특성 검토
김용로,송영찬,박종호,정용,Kim, Yong-Ro,Song, Young-Chan,Park, Jong-Ho,Jeong, Yong 한국건설순환자원학회 2011 한국건설순환자원학회지 Vol.6 No.2
본 연구에서는 산업부산물을 다량으로 사용하는 콘크리트의 건설현장의 구조체 적용을 위한 기초자료를 확보하기 위해 혼화재를 다량 사용한 콘크리트의 압축강도 발현 특성을 검토하였다. 이를 위해 본 연구에서는 일반강도 영역을 대상으로 하여 단위결합재량($310{\sim}410kg/m^3$), 혼화재 치환율(70~90%), 단위수량($140{\sim}150kg/m^3$) 및 양생온도에 따른 압축강도 발현 특성을 검토하였으며, 실제 부재에서의 특성을 검토하기 위해 $2,000{\times}2,000{\times}2,000mm$ 크기의 모의부재를 제작한 후, 수화발열 특성 및 압축강도 발현 특성을 검토하였다. 검토 결과를 토대로, 본 연구에서 검토한 산업부산물을 다량 사용한 콘크리트의 경우 대기온도 평균 약 $13^{\circ}C$ 이상의 양생온도 조건에서는 재령 28일에서 24MPa 이상의 강도를 확보할 수 있는 것으로 나타나, 건설현장에서 골조용 콘크리트로 적용이 가능할 것으로 판단된다. In this study, it was investigated compressive strength generation of concrete using high volume mineral admixture obtaining fundamental data for the application of concrete structure in construction field. For this, it was evaluated compressive strength with unit binder contents($310{\sim}410kg/m^3$), replacement ratio of mineral admixture(70~90%), unit water contents($140{\sim}150kg/m^3$) and curing temperature in the normal strength range. Also, after producing mock-up structure, hydration heat and compressive strength generation was evaluated to examine properties in the concrete member. In case of concrete using a large amount of industrial byproducts which was reviewed in this study, it is possible to secure compressive strength more than 24MPa at age 28days with about $13^{\circ}C$ ambient temperature of curing condition and that is considered to be applied to structure at construction site.
단독 및 복합열화에 의한 콘크리트의 내구성 저하에 관한 실험적 연구
김영선 ( Kim Young Sun ),이의배 ( Lee Eui Bae ),박종호 ( Park Jong Ho ),조봉석 ( Cho Bong Suk ),김용로 ( Kim Yong Ro ),김무한 ( Kim Moo Han ) 한국구조물진단유지관리공학회 2004 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.8 No.2
Durability evaluations to assess the deterioration of reinforced concrete structures in the present have been considered only individual deterioration factors such as salt damage and carbonation. Also, indoor accelerated experiments have not been able to realize the combined deterioration factors that actually affect real concrete structures. So, to establish the proper maintenance and rehabilitation methods of reinforced concrete structures that are subject to combined deterioration, a systematic study on combined deterioration is necessary. This study is carried out to compare individual deterioration test with combined deterioration test and to investigate the effect of the permeation of deterioration factors such as CO<sub>2</sub> and chloride ion on the deterioration properties of concrete under the combined deterioration environments. It is concluded that concrete under the combined deterioration environments received damage more than concrete under the individual deterioration environments and invasion resistivity of non-coated concrete is lower than invasion resistivity of coated concrete. Therefore, from now on, maintenance administration techniques that consider combined deterioration will be needed to solve this issue.
단독 및 복합열화에 의한 콘크리트의 내구성 저하에 관한 실험적 연구
김영선(Kim Young Sun),이의배(Lee Eui Bae),박종호(Park Jong Ho),조봉석(Cho Bong Suk),김용로(Kim Yong Ro),김무한(Kim Moo Han) 한국구조물진단유지관리학회 2004 한국구조물진단학회 학술발표회논문집 Vol.- No.-
Durability evaluations to assess the deterioration of reinforced concrete structures In the present have been considered only individual deterioration factors such as salt damage and carbonation, Also, indoor accelerated experiments have not been able to realize the combined deterioration factors that actually affect real concrete structures So, to establish the proper maintenance and rehabilitation methods of reinforced concrete structures that are subject to combined deterioration, a systematic study on combined deterioration is necessary This study is earned out to compare individual deterioration test with combined deterioration test and to Investigate the effect of the permeation of deterioration factors such as CO₂ and chloride ion on the deterioration properties of concrete under the combined deterioration environments It is concluded that concrete under the combined deterioration environments received damage more than concrete under the individual deterioration environments and invasion resistivity of non-coated concrete is lower than invasion resistivity of coated concrete. Therefore, from now on, maintenance administration techniques that consider combined deterioration Will be needed to solve this Issue