• Proceedings of the Korean Radioactive Waste Society Conference
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• 2019.05a
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• pp.261-262
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• 2019

• Journal of the Korea Safety Management & Science
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• v.12 no.3
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• pp.327-332
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• 2010

It is necessary that End-of-life Vehicle (ELV) should be recycled from the point of view of environmental preservation and resource recycling. This paper deals with two issues. The first one is the basic functional construction and plant layout of the ELV dismantling system that can maximize the reusability of parts and the recyclability of materials. The second issue is the development of a simulation model which can be used to estimate the performance of the layout design. The simulator has been interfaced with an interactive layout design system, and used to effectively determine an optimal layout design of the ELV dismantling system.

• Journal of the Korean Recycled Construction Resources Institute
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• v.4 no.4
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• pp.371-378
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• 2016

In this study, a small portable sorting pilot for separation that can be used in dismantling construction site, which is the stage of construction waste generation, was developed, and its separation efficiency was evaluated to increase the actual recycling rate of the construction waste. The pilot was developed as portable sorting pilot for separation of 6 ton capacity that can handle one arm roll box within a $15m^2$ area in consideration of narrow places in the downtown area where a number of dismantling sites are located and various processes performed in the dismantling sites. In order to evaluate the efficiency performance of the developed device, the separation and sorting were carried out ten times with respect to trommel rotational speed RPM 2-3, 4-6 and 7-8. According to the results, the highest efficiency of about 90% was shown at RPM 6-7.

• Magazine of the Korea Concrete Institute
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• v.20 no.1
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• pp.8-10
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• 2008

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.233-238
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• 2008

Korea has a high volume of exhaust in environmental pollutants compared to her economic size, which results from the increase of the ratio in high energy consuming industries. There arises an issue that efficient energy saving is not achieved in the related projects of the construction, which is one of the high energy consuming industries. In addition, such projects of dismantling old and decrepit buildings are frequent in recent years. Given the situation, to obtain much better effects of energy saving, it is necessary to build basic databases and develop utilization plans on energy consumption volume, exhaust volume of pollutants, and environmental expenses that come from the dismantlement stages out of the life cycle of construction projects. Therefore, this study calculates the exhaust volume of environmental pollutants, converts it into environmental expenses by pollutants, and evaluates the environmental economics on the projects of dismantling buildings, utilizing LCI DB that is suggested by Ministry of Knowledge Economy and Ministry of Environment. For this purpose, related data research, the existing literature study, and on-the-spot field investigation were conducted. Based on the results of analysis on the collected data, the environmental economics of the target building was evaluated.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.44 no.5
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• pp.707-717
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• 2024

Recently, the implementation of unmanned and automated technologies has been actively considered as a solution to reduce safety accidents in industrial sites. However, bridge construction sites are recognized as a more challenging area for research and development compared to other industries due to the complexity of the site, such as weather and terrain, and the fact that the work is not repetitive or standardized. In this paper, a formwork system for unmanned and automated construction of bridge piers, which are considered high-risk work environments due to tasks such as rebar assembly, concrete pouring, and formwork dismantling and assembly at high altitudes, was developed. To achieve this, the formwork was equipped with motorized spindles and an automated lifting system to replace the manual dismantling and assembly process. Additionally, manipulators were installed on the upper work platform to replace workers in tasks such as rebar assembly and concrete pouring. To verify the proposed technology, we aimed to demonstrate the feasibility of the automated formwork system for unmanned pier construction through an assembly test.

• KIEAE Journal
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• v.11 no.3
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• pp.57-62
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• 2011

Asbestos have been used around the world because of reliable and cost-effective physicochemical characteristics. After incubation period about 15-40 years asbestos can cause various cancers, including malignant mesothelioma when inhaled into the air. These properties turned out, asbestos have been banned from using in developed countries. Also in Korea also, the use of asbestos was banned across the board by revision of Industry Safety and Health Act in February 2009. Therefore, the problem of asbestos is not when using. It is about dismantling, maintenance, and the final processing of asbestos waste. Asbestos Cement slates which is Widely distributed throughout the country as roofing materials has much scattering potential compare with inside materials. Also Ministry of Environment is planning to introduce legislation 'Asbestos Safety Management Act' through Environment Announcement and The same Act. 24 show as follows. Minister of Environment or governor should do survey on the actual condition targeting rural buildings with slates and partly or fully fund to dissolve, remove asbestos slate which was used in each buildings. Therefore, to solve these problems, database-building and necessity of management strategies have been continually arisen. So this study was performed. Its application value is very high in terms of its political, economic. Asbestos Cement Slates database could build to collect national registered building data and then using GIS, asbestos cement Slates distribution map were constructed in each province's cities and counties of the country. And this map by Application, construction was to visualize by application, construction of year. Through these results, information of Asbestos Cement Slates could visually inform to policy makers, asbestos dismantling and management contractor, and civilian and it would alleviate the gap of knowledge information. This is expected to be utilized by medium and long-term and effective plan for demolition and dismantling of asbestos cement Slates.

• Proceedings of the SAREK Conference
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• 2004.11a
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• pp.136-136
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• 2004

• Magazine of RCR
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• v.16 no.3
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• pp.12-20
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• 2021

• Magazine of RCR
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• v.16 no.3
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• pp.21-27
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• 2021