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고로슬래그 미분말 치환율 변화에 따른 고강도 모르타르의 공학적 특성
馮海東(Feng Hai-Dong),손호정(Son Ho-Jung),허영선(Heo Young-Sun),한민철(Han Min-Cheol),한천구(Han Cheon-Goo) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
In the experiment, quality characteristics of high strength mortars were analyzed according to the change of powder and curing temperature of blast furnace slag, and the result is summarized as follows. Autogenous shrinkage length change ratio according to the change of BS replacement ratio and curing temperature increases due to an increase in pore and alkali ion by latent hydraulic property of BS as BS replacement ratio increases.
방화석고보드 부착에 따른 섬유혼입 초고강도 콘크리트의 내화특성
한상윤(Han, Sang Yoon),馮海東(Feng, Hai Dong),손호정(Son, Ho Jung),양성환(Yang, Seong Hwan),한천구(Han, Cheon Goo) 한국구조물진단유지관리학회 2011 한국구조물진단학회 학술발표회논문집 Vol.15 No.1
This study reviewed the fire resisting capacity of ultra high strength concrete by attaching a fireproof plaster board to a concrete pillar member mixed with PF with a view to preventing its explosion and improving its fire resisting capacity during a fire. As a result of experiments, attaching a fireproof plaster board prevents its explosion reduces its internal temperature at 0.025 % of PF mixing ratio, so using a fireproof plaster board mixed with PF is effective for preventing its explosion.
양생온도 변화에 따른 플라이애시 치환 고강도 모르터의 자기수축 특성
손호정(Son Ho-Jung),김영희(Kim Young-Hee),馮海東(Feng Hai-Dong),허영선(Heo Young-Sun),한민철(Han Min-Cheol),한천구(Han Cheon-Goo) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
This study investigates the effect of curing condition on autogeneous shrinkage of high strength mortar specimens incorporating fly ash (FA). Test results showed that increasing FA contents increased the workability of fresh concrete, but slightly decreased the compressive strength of hardened concrete at 28 days. In addition, increasing FA contents and curing temperature decreased the autogeneous shrinkage of the concretes.