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정형호(Chung Hyung Ho),송준원(Song Jun Won),홍구표(Goo-Pyo Hong),박철용(Cheol Yong Park),김진업(Kim Jin Up),양경모(Yang Kyung Mo),이복만(Lee Bok Man) 대한설비공학회 2006 대한설비공학회 학술발표대회논문집 Vol.2006 No.6
An infiltration was realized as an important part of ventilation to change fresh air with contaminated air in a house. In this study, it was measured the infiltration in new apartment buildings according to Seasons, height etc. We measured the infiltration by using tracer gas method and did for 24hours. To quantify the infiltration, Sulfur Hexafluoride(SF?) gas was used. The Constant Concentration was conducted during experimental process and the concentration of the gas was measured with a gas monitor. In the results of the measurement, the infiltration were appeared over 0.6 ACH in winter and about 0.2 ACH in summer and autumn. Also the infiltration were measured more highly at high and low stories than middle stories in winter.
김종락,김성식,이복만,임남기,정상진 대한건축학회 1999 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.19 No.2
This experimental study presents the strength properties of mortar using the blast-furnace slag sand. The mix design of this study is based on the each three classes of unit water;(250, 275, 300) ㎏/㎡ and four classes of W/C;(45, 50, 55 60)% and substitution rate(0, 25, 50, 75, 100)%. It gives following result. As W/C ratio increase, the strength is decrease. In case of mortar using air-cooled blast-furnace slag sand, the 3-days arid 7-days compression strength is increase as substitution rate is higher. But the mortar using quenched blast-furnace slag sand, compression strength is increase as substitution rate is higher. Also the flexural strength was equal to previous a result.
김형남,김우재,김성식,이복만,정상진 대한건축학회 1999 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.19 No.2
Recently domestic building market in the face of 3D, in addition to construction cost increase, materials lack problems and opening a building market to foreign countries, is trying to find out the efficient ways of overcoming these problems. So the necessity to study the permanent form is urgent to escape the problems of constructing human power economy, cost down, noises problem, environmental prevention and efficacy of form work to technical improvement will contribute a practical permanent form in field through economic evaluation of permanent form. In this paper, we compared wood form cost with permanent form cost(made form polymer or fly ash) far frame work.