• Magazine of the Korea Concrete Institute
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• v.20 no.5
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• pp.33-42
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• 2008

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.13 no.5
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• pp.82-89
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• 2014

In this paper, fire resistance test was carried out to obtain class H-120 thermal insulation of fire dampers according to a hydrocarbon fire conditions. Specimens were fabricated three different types according to the change of the insulation system applied to damper blade and coaming which were measured surface temperature by performing the fire resistance test. As a test result, specimen-1, 2 of an uninsulated damper blade were exceeded thermal insulation acceptance criteria at 21 minutes, 46 minutes respectively, but specimen-3 of an insulated damper blade was satisfied thermal insulation acceptance criteria during 120 minutes. The test results showed that the insulation of the damper blade was an important factor in the fireproof performance of fire dampers concerning the coaming length minimum 500 mm on the unexposed side as specified test standard.

• Proceedings of the Korean Geotechical Society Conference
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• 2005.10a
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• pp.129-139
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• 2005

In this paper, the behaviors of tunnel damaged by fire, the diagnostic techniques for evaluating tunnel stability are presented. Also two fireproof construction methods are recommended. Three tunnels damaged by fire were analyzed to evaluate the structural stability. From the these analyzed, it is recommended that surface checking, rebound number of concrete by Schmidt Hammer, and carbonation of concrete are essential to evaluate the engineering properties of concrete in tunnel structure damaged by fire. On the basis of case studies of tunnel fire collected by ITA, the change of concrete and steel strengths by fire are explained, and numerical analysis, which was performed on culvert and circle tunnel, shows that distribution of temperature in the tunnel is dependant upon tunnel shape. Two fireproof construction methods using panel and punching metal are introduced to protect the tunnel by fire.

• Proceedings of the Korea Concrete Institute Conference
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• 2008.04a
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• pp.961-964
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• 2008

There are researches in progress on ensuring the safety of the high impact concrete in case of fire which is a current rising social problem and this research institute also developed PFB technology, the explosion preventing technology. PFB technology is to apply POSCO E&C Fire Board, a fireproof board, with an adhesive agent on the construction site, and this technology passed 3-hour fireproof test and this technology was proven from a previous research that the temperature of main root is maintained under $200^{\circ}C$. Therefore, tests on basic contents was performed in this research before the actual construction, with a full scale of wooden prototype to apply PFB technology to actual construction sites and the tests were done on the workability of fireproof board, the adhesive power, the resistance against imprint of wooden nail, the heat conductivity and etc. As the results of these tests, PFB technology was proven to have an excellent workability at a construction site and to be easy for processing and also, this technology was proven to have a great resisting power against imprint of wooden nail. Therefore, this research has confirmed that PFB technology has no problem to be applied on a construction site.

• Fire Science and Engineering
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• v.3 no.3
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• pp.3-7
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• 1989

The aim of this study is to provide the basic data of spray setting method for the fireproof covering. For this purpose, the purpose, the behavior of different three kinds method which is the number of thimes, interval, finishing for a required performance. The result of the data analysis shows that it is better to spray setting method at a time and to finish by natural becomes to reduce a period and labor cost for works.

• Proceedings of the Korea Concrete Institute Conference
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• 2009.05a
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• pp.471-472
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• 2009

Recently, UH-PH SC (Ultra High PH Strength Concrete) used in High rise building is the material increases in tendency. Thus, the results indicate that it is possible to fireproof panels, fire protection of materials.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2013.11a
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• pp.141-142
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• 2013

철골건축물은 화재에 취약한 구조로써 내화성능 확보를 위하여 내화피복이 필수적이다. 국내에서 가장 많이 사용되고 있는 철골내화피복재는 내화뿜칠재로 폭 넓게 사용되고 있으나, 기존 제도에서 인정 당시의 내화성능은 확인이 가능하나 시간경과에 따른 내구성저하와 이에 따른 내화성능 저하가 예상된다. 이에 본 연구에서는 실내조건에서 장시간 자연폭로실험을 실시함으로써 내화뿜칠피복재의 시간경과에 따른 내화성능 저하현상을 확인하였다.

• Fire Science and Engineering
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• v.15 no.4
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• pp.78-85
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• 2001

This dissertation is research on the fireproof characteristic of molded transformer and the extinguishable characteristics of the NAF S-III. As the research method, a theoretical examination has been made for the combustion process of epoxy resin, which was the main material of molded transformer, and extinguishing process of NAF S-III, which has recently been used in the clean extinguishable chemicals. Furthermore, for its proof, the experiments on combustion and extin-guishment on molded transformer has been performed. By installing the actual molded transformer in and artificial the horizontal heating furnace which has similar conditions with the electrical substation, and after subsequently ignited, the extinguishing process has been observed by classifying it into the natural extinguishment of the ignited transformer, and extinguishable chemical in NAF S-III has been injected. The volume of injected extinguishable chemical was the economical amount which was equipped with the extinguishable capability on the molded transformer under combustion, and it was calculated with the Announcement of the Ministry of Government Administration and Home Affairs as the basis. With the injection of the calculated extinguishable chemicals, the ignited transformer has completely extinguished within one minute.

• Journal of Advanced Marine Engineering and Technology
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• v.37 no.4
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• pp.431-437
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• 2013

In this paper, Fire resistance test was carried out to obtain class H-120 thermal insulation of fire dampers according to a hydrocarbon fire conditions. Specimens were fabricated three different types according to the change of the insulation system applied to damper blade and coaming which were measured surface temperature by performing the fire resistance test. As a test result, specimen-1, 2 of an uninsulated damper blade were exceeded thermal insulation acceptance criteria at 21 minutes, 46 minutes respectively, but specimen-3 of an insulated damper blade was satisfied thermal insulation acceptance criteria during 120 minutes. The test results showed that the insulation of the damper blade is an important factor in the fireproof performance of fire dampers concerning the coaming length minimum 500 mm on the unexposed side as specified test standard.

• Journal of the Korean Recycled Construction Resources Institute
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• v.11 no.4
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• pp.560-567
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• 2023

This study is part of the research on fire-resistant materials to prepare for changing fire behavior, oyster shell and egg shell, which are natural calcium carbonate materials, were substituted as fine aggregates. The purpose of this study was to evaluate the strength and fire resistance performance according to the substitution rate, and to provide data for use as fire resistance material. Oyster shells and egg shells were substituted with 10~50 % of the fine aggregate, respectively, and tested for strength and Simplified heating according to the KS test method. Although the strength of OS was measured to be higher than that of ES, the backside temperature was also measured to be higher. As a result, it is recommended to use fireproof boards with OS where strength performance is required, such as explosive fires, Where high fire resistance performance is required, such as high-temperature fires over 1000 ℃, fireproof boards with ES can be selected according to the application.