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친환경 고성능 지오폴리머 페이스트의 적정배합 도출에 관한 연구
이강필 ( Kang Pil Lee ),도윤석 ( Yun Seok Do ),이상수 ( Sang Soo Lee ),송하영 ( Ha Young Song ) 한국건축시공학회 2009 한국건축시공학회 학술발표대회 논문집 Vol.9 No.2
After inquiring into physical characteristics of using fly ash and alkali solution, it was found that higher pH density is favorable to strength development at early age and the higher the age is, the higher the compressive strength gets. Also, it was found that when there is more addition of activator, the compressive strength is higher. I was shown that more than atmospheric curing, steam curing was favorable for development of compressive strength. When the temperature of curing temperature was higher, most of the compressive strengths were higher. Thus, based on this study, it was understood that environmental-friendly chemically combined concrete using fly ash and alkali solution can be utilized without using cement.
국내,외산 메타카올린을 사용한 고강도 콘크리트의 내구특성에 관한 실험적 연구
이강필 ( Kang Pil Lee ),이승민 ( Seung Min Lee ),이상수 ( Sang Soo Lee ),송하영 ( Ha Young Song ) 한국건축시공학회 2009 한국건축시공학회 학술발표대회 논문집 Vol.9 No.1
As the high-rise building increase due to the gravitation of population to big cities recently, it requires high quality and high performance of Concrete. As a result, people are keenly interested in Meta-kaolin as new admixture favorable from an economic perspective, which has strength and endurance with admixture at the same level like Silica-fume. Accordingly, as to Meta-kaolin, this study was to set by three levels like domestic one, foreign one, and Silica-fume, the water-binding material ratio 25%, and four level substitute like 0, 10, 20, and 30(%) in order to compare and analyze the quality durability of high-concrete according to the substitute of Meta-kaolin applicable with replacement of Silica-fume. As a result of performing experiment it was found that when water-binding material ratio increases, resistance of neutralization, carbonation, salt damage and sulfate decrease, and when replacement ratio of mineral admixture increases, depth of accelerating carbonation gets greater. Also, the combination of SF and MK-B favored resistance to chloride ion penetration better than MK-A, and it was found that when replacement ratio of binding material increases, the resistance to sulphuric acid increases. Therefore, based on this study, it was understood that meta-kaolin is useable in replacement of silicafume.
메타카올린과 알칼리 자극제를 사용한 무시멘트계 무기복합체의 유동특성 및 강도특성 연구
이강필 ( Kang Pil Lee ),김성수 ( Sung Soo Kim ),이윤성 ( Yun Seong Lee ),이상수 ( Sang Soo Lee ),송하영 ( Ha Young Song ) 한국건축시공학회 2010 한국건축시공학회 학술발표대회 논문집 Vol.10 No.1
As a result of physical characteristics of using meta-kaolin and alkali accelerator, it was found that higher curing temperature density is favorable to strength development at early age and the higher the age is, the higher, most of the compressive strength gets. Also, I was shown that more than atmospheric curing, steam curing was favorable for development of compressive strength. When the temperature of curing temperature was higher, most of the compressive strengths were higher. Thus, based on this study, it was understood that environmental-friendly chemically combined concrete using meta-kaolin and alkali accelerator can be utilized without using cement.
산업부산물을 활용한 무시멘트계 친환경 경량 복합패널 연구
이강필(Lee, Kang-Pil),이상수(Lee, Sang-Soo),송하영(Song, Ha-Young) 대한건축학회 2011 大韓建築學會論文集 : 構造系 Vol.27 No.11
While whole world is trying to reduce the emission of carbon dioxide which is a main cause of the world’s global warming, the field of construction industry actively makes effort to reduce the amount of cement which mainly causes to generate carbon dioxide as well. In this study, unlike the existing architectural wall panel products, the properties of panel depending on addition of exclusive accelerator mixing furnace slag and paper ash without using cement are examined. The appropriate mix with strength and lightweight is deriven. In addition, waterproofing, thermal resistance and fire resistance of eco-friendly lightweight filler are shown excellent and bending performance and water-proofing are shown excellent by applying it to the composite panel. Thus, based on the results of this study, we think that it is possible to apply it into the composite panel, once exclusive accelerator is added into blast furnace slag and paper ash. We confirm the potential of using industrial by-products resource as eco-friendly building materials without using cement.
SFFB를 사용한 3성분계 고강도콘크리트의 유동 및 강도특성
이윤성(Lee Yun-Seong),박종필(Park Jong-Pil),이강필(Lee Kang-Pil),길배수(Khil Bae-Su),이상수(Lee Sang-Soo),송하영(Song Ha-Young) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
The study, as an experiment on applicability of SFFB high strength concrete as substitute material of silica fume, compared and analyzed the concrete flowing and strength properties experimentally in accordance with replacement ratio of SFFB, blast furnace slag and fly ash. As a result of it, the conclusion is as follows. The high range water reducing admixture amount used in which the ternary system concrete of the fly ash and SFFB is needed for the target flowing was less than the ternary system concrete of the blast furnace slag and SFFB. In addition, the material age compressive strength was develop to be excellent.
MgO를 혼입한 저탄소 무기결합재의 양생조건에 따른 강도특성
박종필(Park Jong-Pil),이윤성(Lee Yun-Seong),이강필(Lee Kang-Pil),이상수(Lee Sang-Soo),송하영(Song Ha-Young) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
This study has tried to produce low-carbon inorganic composites which can be produced at a normal temperature, with no processing of high temperature plasticity, using only alkali accelerator by complementing the weak points of blast furnace slag, red-mud, and silica fume to be used as cement substitute, (not the normal concrete admixture). In order to compensate the contraction crack which it generates after manufacturing, the magnesium oxide (MgO) powder is mixed and it utilizes as basic data of the low carbon inorganic composites. In addition, compressive strength according to the curing condition of the inorganic composites mixing the MgO powder and contraction change properties tried to be examined.