• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.05a
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• pp.213-214
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• 2021

External insulation method is used to conserve energy of buildings. However, the current external insulation method uses organic insulating materials to become a diffusion path in case of fire. In this study, the purpose of this study is to provide basic data on the required performance of the plastering material according to the CaCO₃ powder addition of the finishing material of the external insulation method. In Figure 1, when powder was added, the adhesion strength decreased by 30% to 35% at 10% and 0% to 50% at 20% compared to Plain. In Figure 2, the moisture permeability increases approximately twice when powder is added. The results for the water absorption coefficient are shown in Figure 3.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.05a
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• pp.72-73
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• 2021

For the development of high-fluidity concrete using low-binder, The effect of the use of the developed acrylic viscosity agent on the physical properties of concrete evaluated. The amount acrylic viscosity agent used was 1.5%, 1.7%, and 2.0% based on the binder amount of 400kg/m3, and slump flow test, slump flow 500mm arrival time measurement, air volume measurement, and U-Box passing test were conducted to determine the effect of the physical properties of concrete. it was judged that 1.5% of the acrylic viscosity agent used in high-fluidity concrete using low-binder was most suitable.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2020.11a
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• pp.81-82
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• 2020

Cement paste is the basic material constituting concrete and the most basic data of workability. This study quantitatively evaluated the measured data using a ring flow and a rotary viscometer to estimate the flow of cement paste, and also evaluated the flow and rheology over time. For this, the current work has studied admixtures that affect the fluidity of cement paste. As a result of the experiment, since fluidity and plastic viscosity are inversely proportional to each other, more experimental studies are needed to obtain high fluidity and high viscosity at the same time.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2020.11a
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• pp.38-39
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• 2020

Since a lot of fugitive dust is generated at construction and civil engineering construction sites in Korea, the fine dust regulation at construction sites has been strengthened in accordance with the implementation of the Special Act on Fine Dust Reduction. In a construction site, water is generally sprayed to temporarily reduce the generation rate of scattered dust, but there is a problem that when water evaporates, it scatters again. In this study, the performance of a scattering dust inhibitor incorporating a polymer that stabilizes the ground and reduces the rate of scattering dust by forming a polymer film even when water evaporates using a polymer and a surfactant was evaluated.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.05a
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• pp.164-165
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• 2021

In Korea, in the case of fire scenarios in performance design, it is assumed that the sprinkler is not working. In addition, it does not applicate various fire conditions. Therefore it is not enough that the accuracy about fire scenario. In foreign countries, reseach is being conducted to predict the casualities that can occur due to fire in the building space through statistical risk analysis. Also, research is consistently conducting for design that consider the sprinker probability of operation. Therefore, to analyze the fire risk of each building in Korea, the risk was analyzed using statistical data. As a result, the risk of casualties that can occur for each building use was analyzed as 0.6(persons/cases) for residential buildings, 0.25(persons/cases) for sales facilities, and 0.12(persons/cases) for buisiness facilities.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2020.11a
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• pp.96-97
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• 2020

In this study, the compressive strength and porosity characteristics of cement mortar mixed with liquid and powder composite water repellent were evaluated. When the liquid water repellent was mixed, the compressive strength at 28 days of age was 42% compared to OPC, and the compressive strength was greatly reduced. However, the 28-day compressive strength of the powder water repellent mixture and P5L1, P6L1 liquid and powder composite water repellent was about 97% compared to OPC, and there was little decrease in compressive strength.

• 한국벤처창업학회:학술대회논문집
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• 2020.06a
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• pp.211-214
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• 2020

2020년 상반기 코로나19 팬데믹 사태 이후 비즈니스의 세계는 매우 다른 모습으로 변화되었다. 향후 비즈니스의 키워드는 디지털로 수렴하는 비대면(Untact)이라 할 수 있다. 즉 디지털을 향해 가속페달을 밟을 것이고 디지털 커뮤니케이션 중심의 비즈니스가 주목받게 될 것이다. 코로나 사태로 인해 사람들이 온라인으로 쏠리면서 디지털 미디어 활용역량이 중요한 화두로 떠올랐다. 코로나 사태가 모든 접점에서 디지털화가 얼마나 중요한지를 일깨워 준 것이다. 본 연구는 디지털 미디어 기기 및 커뮤니케이션 활용역량이 창업의도에 미치는 영향에 관해 위험감수성 및 진취성의 매개효과를 반영하여 진행하고자 한다. 본 연구를 통해 디지털 미디어기기 및 커뮤니케이션 활용역량이 창업에 있어서도 유의한 영향을 미치는지를 검증하고, 디지털 미디어 기기 및 커뮤니케이션 활용 역량이 창업의도에 영향을 미치는 과정에서 위험감수성과 진취성이 매개역할을 할 수 있는지를 규명하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.05a
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• pp.52-55
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• 2020

본 논문에서는 분산 원장의 미들웨어 플랫폼으로 예상되는 블록체인 시스템의 실질적인 운영과 관련하여 블록체인 그룹 구조의 단점에 대하여 연구하고 이를 해결하기 위한 해결책으로 현재 ISO/IEC JTC1 SC6 에서 표준화가 진행중인 만물 네트워크 프로토콜의 사물 유저 소셜 그룹 관리기능을 이용한 블록체인의 운영 방법을 제시하였다. ISO/IEC JTC1 SC6 에서 표준화가 진행중인 만물네트워크의 사물 유저 소셜 그룹 관리기능은 안정적인 프로토콜 기능과 데이터 전송 관리를 제공하고 있으며 멤버 디스커버리기능, 데이터 전송 통로 관리기능 등의 그룹 관리 기능을 제공하고 있다. 이러한 기능을 블록체인 플랫폼에 활용할 수 있어서 블록체인 멤버 관리 및 그룹 관리 기능에 도움이 될 것으로 예상하며 표준화가 진행되고 있는 ISO/IEC JTC1 SC6 의 미래 네트워크 기능과 구조에 적극 반영하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2021.11a
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• pp.79-82
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• 2021

본 논문에서는 현재 ISO/IEC JTC1 SC6 에서 표준화가 진행중인 만물네트워크 프로토콜 기능을 구현하기 위한 초기 단계로 만물네트워크 사물 사용자의 소셜 그룹 형성을 위한 프로토콜 메시지를 JSON 표현으로 표기하였다. ISO/IEC JTC1 SC6 에서 표준화가 진행중인 만물네트워크의 사물 유저 소셜 그룹 관리 기능은 안정적인 프로토콜 기능과 데이터 전송 관리를 제공하고 있으며 멤버 디스커버리기능, 데이터 전송 통로 관리기능 등의 그룹 관리 기능을 제공하고 있다. 이러한 기능을 구현하기 위한 표준 프로토콜 메시지를 JSON 으로 표기함으로써 만물네트워크 실현 및 상용화에 기여할 수 있으며 특히 표준화가 진행되고 있는 ISO/IEC JTC1 SC6 의 미래 네트워크 구현과 실증에 적극 반영하고자 한다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.11a
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• pp.129-130
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• 2021

For the development of high-fluidity concrete using low-binder, The effect of the use of the developed acrylic viscosity agent on the physical properties of concrete evaluated. The amount acrylic viscosity agent used was 0.28%, 0.29% and 0.30% based on the binder amount of 350kg/m³, and slump flow test, air volume measurement, U-Box passing test and strength compressive were conducted to determine the effect of the physical properties of concrete. it was judged that 0.29% of the cellulose type viscosity agent used in high-fluidity concrete using low-binder was most suitable.