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초고층 건축물 시공을 위한 80㎫ 고강도콘크리트 펌프압송에 관한 연구
김우재(Kim Woo-Jae),이건철(Lee Gun-Cheol),김광기(Kim Kang Ki),정상진(Jung Sang-Jin),이종인(Lee Jung-In),김현배(Kim Hyun-Bae) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
The present study purposed to apply 80㎫ high strength concrete for 30 story and 60 story outriggers at the construction site of the 1st World at the Song do Island. The volume of concrete consumed at the site was 14,000㎥, which is larger than the volume of 80㎫ high strength concrete consumed at construction sites in Japan in 2006. For the mass production of 80㎫ high strength concrete and the convey of the concrete to over 2,500m high floors, we evaluated the fluidity of the concrete and its basic physical properties such as compressive strength, creep, drying shrinkage and autogenous shrinkage in the laboratory, and conducted field B/P experiment. In addition, we installed manometers on the concrete conveying pipe at the site and measured pressure during concrete pumping. Through these procedures, we collected basic data on the volume of placement per hour to be used in the construction of high rise buildings with 80㎫ high strength concrete.
폐목질을 사용한 시멘트보드의 기초적 특성에 관한 실험적 연구
황병준 ( Byoung Jun Hwang ),김광기 ( Kwang Ki Kim ),박희곤 ( Hee Gon Park ),강태경 ( Tae Kyoung Kang ),백민수 ( Min Soo Back ),정상진 ( Sang Jin Jung ) 한국건축시공학회 2004 한국건축시공학회 학술발표대회 논문집 Vol.4 No.1
Recently, as the alternatives to preserve environment such as effective usage of wastes or unusable resources are drawing attentions, researches and measures for the two tasks, which are reuse of waste wood and development of eco-friendly materials, are being examined and established in various fields. However, they are still insufficient. Therefore, in this study, for the efficient application of waste woods and eco-friendly effects, mortar was produced using sawdust as the waste wood and mineral material cement for combination, in order to produce inorganic boards using waste woods, which were made when sawing. The present study purposed to analyze the physical and dynamic characteristics of woody cement boards, which were made by modifying water-cement ratio for each wood inclusion rate based on a hardening-accelerator inclusion rate set in previous studies and, based on the findings, to provide basic data about the physical properties of inorganic boards made of waste wood, in order to produce woody cement boards using waste wood, which has problems in being used in the manufacturing of woody cement boards.
황병준(Hwang Byoung-Jun),정광식(Jung Kwang-Sik),김광기(Kim Kwang-Ki),박희곤(Park Hee-Gon),강태경(Kang Tae-Kyoung),정상진(Jung Sang-Jin) 대한건축학회 2004 大韓建築學會論文集 : 構造系 Vol.20 No.10
With environmental contamination and the exhaustion of natural resources due to the rapid industrialization, there are growing concerns over the preservation of the environment and resources and as a result research on recycling wastes such as wood waste is being actively carried out.<br/> Thus, in order to promote the effective use of wood waste and to examine the characteristics of cement boards that are made of wood waste from wood, an environment-friendly material, and can be used as insulating and fire-proofing materials, this study purposed to investigate the properties of mortar made of sawdust and cement, which is an inorganic material used as a binder, to determine the optimal proportion of congelation accelerator, and ultimately to provide basic materials on the physical properties of woody cement boards.<br/> According to the result of this study, the most economically efficient proportion of congelation accelerator CaCl₂ is 4%, and when the proportion of wood increases the specific gravity of cement boards goes down and physical properties such as heat conductivity are Improved.
황병준,정광식,강태경,김광기,임서형,정상진 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)
Recently, as the alternatives to preserve environment such as effective usage of wastes or unusable resources are drawing attentions, researches and measures for the two tasks, which are reuse of waste wood and development of eco~friendly materials, are being examined and established in various fields. However, they are still insufficient. Therefore, in this study, for the efficient application of waste woods and eco~friendly effects, mortar was produced using sawdust as the waste wood and mineral material cement for combination, in order to produce inorganic boards using waste woods, which were made when sawing. The present study purposed to analyze the physical and dynamic characteristics of woody cement boards, which were made by modifying water~cement ratio for each wood inclusion rate based on a hardening~accelerator inclusion rate set in previous studies and, based on the findings, to provide basic data about the physical properties of inorganic boards made of waste wood, in order to produce woody cement boards using waste wood, which has problems in being used in the manufacturing of woody cement boards.