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국내 레미콘의 권역별 배합특성에 관한 분석-경기 및 경상권역을 중심으로-
서휘완 ( Hwi Wan Seo ),김영일 ( Young Il Kim ),강창운 ( Ghang Un Kang ),한천구 ( Cheon Goo Han ) 한국건축시공학회 2011 한국건축시공학회 학술발표대회 논문집 Vol.11 No.1
This study analyzes the yearly-best delivered size range of truck mixer based on the specified mix, Water to Binder Ratio, aggregate proportion and unit amount with statistical method targeting on Kyeongi and Kyeongsang province and compares with the similar materials of Japan to propose as a basic standard for the quality control of mixer truck. As a result, in case of the Water to Binder Ratio of these areas, it is higher than Japan`s due to the excessive safety rate reflecting the changes of differential value impact and unit amount, and the unit amount`s standard deviation is very large by reflecting the changes of the amount used and chemical admixture susceptibility. In case of aggregate proportion, the frequency rate is about 50%, which is very similar value with Japan`s one.
국내산 인공경량골재를 이용한 콘크리트의 기초 특성 연구
권해원 ( Hae Won Kwon ),서휘완 ( Hui Wan Seo ),이지환 ( Ji Hwan Lee ),전우철 ( Woo Chul Jun ),이재삼 ( Jae Sam Lee ) 한국건축시공학회 2013 한국건축시공학회 학술발표대회 논문집 Vol.13 No.2
This study was a result of laboratory test to confirm the porperties of concrete containing the domestic artificial lightweight aggregate. The domestic artificial lightweight aggregate is made with bottom ash which waste material in the thermal power plant. In the experimental result air contents of fresh concrete was measured lower than other artificial lightweight aggregate. This air contents is important for retaining the resistance of freezing and thawing. Therefore air contents of concrete will be considered for retaining the resistance of freezing and thawing when manufacture the concrete containing the domestic artificial aggregate.
산업부산물을 활용한 조강형 결합재의 치환율에 따른 조기강도 특성에 관한 연구
전우철 ( Woo Chul Jun ),권해원 ( Hae Won Kwon ),서휘완 ( Hwi Wan Seo ),이재삼 ( Jae Sam Lee ) 한국건축시공학회 2014 한국건축시공학회 학술발표대회 논문집 Vol.14 No.1
This study is a part of development to improve early-age compressive strength of concrete by using industrial by-products. It tried to investigate the characteristics of early-age compressive strength according to curing temperature and industrial by-product replacement ratio 10, 20, and 30 %. As a result, regardless of industrial by-product replacement ratio and age, early-age compressive strength of concrete was found to be high compared to Plain using 100 % cement.