• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.8
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• pp.793-800
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• 2016

The efficient materials management in construction field is a very important work required for designing and demolishing building. As the waste amount caused by the building demolition is increased, the concern related to the treatment method, recyclability, and effect on the environment have been gradually increased. In general, the conventional databases for the construction materials management does not consider the reuse of the construction materials on steps for the building demolition and reconstruction, but they only consider managing the type and input amount of them. In this paper, we propose the database system for efficiently managing the various construction materials informations including the location and condition of each construction materials for the efficient reuse of them on the building demolition and reconstruction. The considered informations are obtained the RFID(: Radio Frequency IDentification) system with on-board the location estimation module. Using the reuse management of construction materials, based on the proposed database, we expect the reduction of the construction cost and time.

• The Journal of the Korea institute of electronic communication sciences
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• v.12 no.1
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• pp.195-200
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• 2017

Due to the rapid development of Internet technology, qualities of Web services are steadily improving and the Web database systems are actively employed to efficiently manage proper informations in various fields. In this paper, we propose a Web database system for the efficient material management for reusing construction materials. The proposed Web-based management system is operated using the spring framework, after constructing a database based on the collected data including tag ID, Location, Material, State, and Cycle, using the RFID(: Radion Frequency IDentification) system equipped with a location estimation module. Recently, the processing problem for a large amount of the residues generated at the demolition stage of various buildings is magnified in the construction site. The proposed Web-based construction material management system is expected for improving the processing problem as increasing the reusability and for reducing the construction cost as efficiently managing the construction materials for the reuse.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.9
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• pp.1027-1032
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• 2015

Using the radio wave, RFID(: Radio Frequency IDentification) wirelessly transmits the unique information saved in a tag attached on the specific object. In the construction area, the trend in using RFID for managing the input and inventory of the construction materials is upward. General management systems for the construction materials have only a function of identifying the tag attached on the construction materials, but the management system with a function of identifying and managing the location information of the construction materials employing RFID, for reusing it, is not actively developed. For the efficient reuse of the construction materials, in this paper, we propose the RFID system with a function of estimating and saving the location information of the specific construction materials, based on the estimated distances between the particular subs and reader. The proposed system consists of RFID reader, distance estimate, communication, and memory units.

• Journal of the Korea Institute of Building Construction
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• v.18 no.1
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• pp.9-15
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• 2018

Radon gas, which is present on the earth, is a primary carcinogen released from rocks, soil, building materials, etc., and exists as a unique gas phase. In order to solve the risk of radon gas, we evaluated the basic performance which can be used as indoor finishing materials in addition to the radon gas reduction properties of the matrix using anthracite. An anthracite used as a conventional filter material was used to produce a matrix, and a test was conducted to replace the gypsum board, which is one of the building materials used in the existing room. As the anthracite replacement ratio increases, flexural failure load strength increases and thermal conductivity tends to decrease. Depending on the thickness of the board, the reduction performance of radon gas shows a slight difference.

• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.12
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• pp.1201-1208
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• 2016

Radio Frequency Identification (RFID) technology has a significant attraction throughout various industry sites, along with the development of wireless communication technologies. The typical applications of RFID include medical, logistics, and distribution, and, specially, it is effectively applied to non-contact environments, because it employs radio waves. Although, recently, construction cases of the RFID management systems for the inventory management of the construction materials have been increased, the related researches and experiments for the reused materials are not actively performed. In this paper, we propose the RFID system with the localization function for effectively managing the reuse of the construction materials, adding to the conventional inventory management system. The proposed system consists of a RFID reader unit and a receiver unit, and the location information of the material with the attached RFID tag is obtained by estimating the position of a RFID reader. The distance value for estimating the reader position is calculated using the Received Signal Strength Indicator (RSSI) value of Zigbee, and the performance evaluation of the proposed system is performed in the indoor space of $5m{\times}5m$.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2011.11a
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• pp.486-489
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• 2011

건축물 내 외벽에 주로 사용되는 건축용 자재 중 샌드위치 패널은 양면으로 도장한 철판 사이에 심재로 단열재를 넣어 구성된 합성복합자재이다. 샌드위치 패널의 사용범위는 창고시설 및 공업용 건축 등의 용도로 많이 사용되고 있으며, 최근에는 시공에 따른 이점으로 주택 및 상업용등으로 널리 확대되어 사용되고 있다. 본 연구에서는 화재초기의 연기밀도는 인명 대피 시 시야확보에 있어 중요한 역할을 하기에 현재 국내에서 사용되는 건축용 외장재를 용도별로 선정하여 시간에 따른 연기밀도의 값을 구하고 용도에 따른 화재 연기의 확산 정도를 예측하는데 목적을 두었다.

• Proceedings of the Korean Fiber Society Conference
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• 2002.04a
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• pp.259-262
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• 2002

Polyvinylchloride(PVC)는 1838년 Regnault에 의해 처음으로 합성된 고분자로 1920년대 후반부터 섬유로 이용하기 위한 많은 연구가 시도되었으나, 상업적 규모로 제조되기 시작한 것은 1942년경부터였다[l]. 현재, PVC는 건축자재용 파이프, 필름 등의 포장재, 가구 및 수송자재, 자동차 내장재 등의 다양한 용도로 사용되어지고 있으나, 다른 폴리머에 비해 열안정성이 낮아 분해시 HCl 외에도 benzene, naphthalene, toluene과 다른 alkylated benzene이 방출되어 유독성과 금형 및 기기의 부식에 있어서 문제가 되고 있다[2]. (중략)

• Analytical Science and Technology
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• v.22 no.1
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• pp.57-64
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• 2009

A material database has been developed for VOCs and formaldehyde emitted from building materials in this study. New classification system has been made by correlating the classification methods used in Korean Air Cleaning and Environmental Protection Agency. The developed databases include emission rates of TVOC, 5VOC and formaldehyde emitted from each building material. In addition, the databases can be used as an input variable to estimate indoor air quality (IAQ) using computer simulation since they also contain chemical component and general imformation. Box plot was used to do statistical analysis for emission rates of formaldehyde and TVOCs from different types of building materials. Also we confirmed the building materials worsening IAQ by categorizing the emission characteristic of different types of pollutants.

• Fire Science and Engineering
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• v.29 no.4
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• pp.61-66
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• 2015

PVC pipe has excellent corrosion resistance and chemical resistance and is broadly used. However there are no regulations regarding exposed piping material in buildings. There is growing concern about the vulnerability of piping to fires and generating toxic gas. Exposed piping should be made of incombustible materials to prevent spreading of toxic gas and to minimize damage to life and property in case of fire. Many big structures are being built, and concerns regarding damage by fire are continuously growing. In these circumstances, we should reinforce fire safety standards for buildings and heighten safety consciousness to become a well-developed country. For these reasons, we investigated the materials used for exposed piping and the standards of well-developed countries to enhance safety. We tried to figure out the alternatives by examining the actual conditions of each region's buildings. Based on the use of incombustible materials for exposed piping in each region, we tried to enhance the effectiveness for safety by suggesting revisions for related laws and regulations.

• Journal of the Society of Disaster Information
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• v.17 no.3
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• pp.617-626
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• 2021

Purpose: The purpose of this study is to evaluate the fire srpead risk of building exterior and roofing materials due to the firebrand of forest fire occurring in the urban areas. Method: In order to achieve this research purpose, by selecting building materials used for exterior and roofing materials of buildings, the time to ignition, total heat release, and heat release rate were investigated, and a forest fire firebrand system was established to the possibility of fire spread was confirmed. Result: As a result of the cone calorimeter test, the roofing material had a similar or faster ignition time due to radiant heat compared to the exterior material with the steel plate exposed to the outside, and showed a higher heat release rate and total heat release than the exterior material. Although it was affected by the flammable material, it was confirmed that it did not spread easily due to the limited amount of combustible material, and carbonization marks appeared inside. Conclusion: The cone calorimeter test method has been shown to be useful in understanding the combustion characteristics of building materials by radiant heat, but the fire spread due to a firebrand in a forest fire is directly affected by the flame due to the ignition of surrounding combustibles, so finding a direct correlation with the cone calorimeter method is difficult. It is judged that the roof material may be more vulnerable to the spread of fire due to the fire than the exterior material.