• Proceedings of the Korean Institute of Building Construction Conference
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• 2020.11a
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• pp.188-189
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• 2020

In the field of architecture, concrete and steel bars are the most common and popular combinations. The relationship between the two in a structure is a complementary good that increases in utility when consuming both materials at the same time. However, the combination of the two, which has been perceived as semi-permanent, often faces repairs or reconstruction without its lifespan reaching decades. There are a number of deterioration factors at work for the reason for this phenomenon. Among them, the neutralization of concrete in particular refers to the process in which calcium hydroxide inside concrete reacts with carbon dioxide and loses alkalinity, which creates a corrosive environment for rebars inside concrete, causing serious damage to concrete. In this study, we intend to use a multi-physical analysis program using finite element analysis method to analyze the degree of carbonation according to the internal temperature and concentration of carbon dioxide in concrete, thereby contributing to the prediction of long-term neutralization of concrete and the research related to measures for neutralization of concrete.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2022.11a
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• pp.117-118
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• 2022

High-strength concrete is used for building durability on the coast. It is common to order and produce the concrete from several ready mixed concrete companies. The concrete in Busan was also commissioned by 12 ready mixed concrete companies. The compressive strength and salt diffusion coefficient were measured. The average value and deviation were analyzed.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.05a
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• pp.197-198
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• 2021

The temperature and humidity inside concrete affects the depth of carbonation. In this study, the temperature and humidity inside concrete were predicted by the numerical method under the boundary conditions of ambient temperature, humidity, solar radiation, and wind. Using the results of the thermal humidity analysis, diffusion of carbon dioxide and the reaction of cement hydration products were calculated for carbonation depth.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2021.11a
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• pp.145-147
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• 2021

도시에 인접한 섬마을은 농어촌지역의 섬마을과는 차별화된 해양문화콘텐츠가 필요하나, 섬마을 내 농어업을 영위하는 주민들의 생업 형태는 대부분 유사한 실정임. 본 연구에서는 도시에 인접한 섬마을의 해양공간환경 데이터를 분석하여 실리도만의 특색있는 해양문화콘텐츠 계획안을 제시하고자 함

• Proceedings of the Korean Institute of Building Construction Conference
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• 2023.05a
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• pp.221-222
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• 2023

The purpose of this study is to analyze the applicability and limitations of SPOT robots in the construction industry. The SPOT robot, which is being introduced to construction sites for smart construction with the progress of the 4th industrial revolution, is shaped like a four-legged dog and is equipped with various sensors for data collection and autonomous driving. In this study, hardware and software were analyzed, such as the size of the SPOT robot, mobility on slopes and heights, operating environment, and software functions that can collect data with a sensor weighing up to 14 kg. In addition, while the SPOT robot operates in a construction environment, performance such as stability, accuracy, signal connection distance, and obstacle avoidance are evaluated, and the applicability and limitations of the SPOT robot in the construction industry are analyzed. Based on this analysis, the purpose of this study is to evaluate when and how SPOT robots can be effectively used at construction sites, identify limitations, and derive contributions and improvements for the construction industry.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2020.11a
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• pp.25-27
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• 2020

현재의 도시는 관계성 희박화, 익명성 등의 문제로 커뮤니티 활성화가 과제로 존재한다. 일본 오사카는 물의 도시를 표방하며, 수변공간의 가치를 재검토하고 재생을 도모하고 있으며, 카모가와를 비롯한 수변공간은 도시 가운데 개방적 공공장소로 존재하면서 매력적인 공간 창출을 도모하려는 움직임이 지속되고 있다. 본 연구에서는 일본의 수변공간 활성화에 착안하여 지금까지 이용되어온 방식과 사람들의 행동을 규명하는 것으로 시사점을 얻는 것을 목적으로 하고 있다.

• Korean Architects
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• s.493
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• pp.28-33
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• 2010

• Korean Architects
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• s.537
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• pp.52-57
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• 2014

• Korean Architects
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• s.524
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• pp.26-31
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• 2012

• Proceedings of the Korean Institute of Building Construction Conference
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• 2022.04a
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• pp.174-175
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• 2022

The blast furnace slag, which is widely used as a cement admixture, has latent hydraulics under the influence of cement hydrate, and fly ash and silica fume mainly cause a pozolane reaction. As a result, the cement structure becomes dense, and it is possible to compensate for defects when concrete is usually made with portland cement alone. When fixing carbon dioxide through reaction with carbon dioxide, the amount of calcium hydroxide in the cement paste is important. The larger the amount of calcium hydroxide, the more active the reaction may occur. It is also an important variable in calculating the depth of neutralization through carbonization. In this study, calcium hydroxide in cement paste using mixed materials was quantified through thermal analysis.