보관 환경이 다른 목재 종의 화재위험성 등급 평가 및 예측 = Assessment and Pred iction o f Fire Risk Grad es o f Wood Species in Different Storage Environments

다국어 초록 (Multilingual Abstract)

In this study, the fire risk index of different wood species used in construction was calculated using Chung's equations-II,Chung's equations-III, and Chung's equation-IV. The test specimens were from larch, Russian ash, sapele, and camphor tree.
Their fire characteristics were evaluated using a cone calorimeter according to ISO 5660-1. After combustion, the fireperformance index-II (FPI-II) of the specimens, as calculated by Chung's equations, varied between 1.56 and 8.12 s2/kW, andthe fire growth index-II (FGI-II) varied between 0.03 and 0.23 kW/s2. The fire performance index-III (FPI-III) based onpolymethylmetacrylate varied between 5.27 and 27.36, and the fire growth index-III (FGI-III) varied between 0.20 and 1.58.
The fire risk index-IV (FRI-IV), which is the fire risk grade, showed that Russian ash and camphor tree have a high firerisk, with FRI-IV values of 0.27 and 0.30, respectively. Therefore, wood species that contain volatile compounds or havea low bulk density have a high FRI-IV value owing to decreased FPI-II and FPI-III and increased FGI-II and FGI-III.

국문 초록 (Abstract)

본 연구에서는 건자재용 목재의 화재위험성 평가를 하기 위하여 Chung’s equations-II, Chung’s equations-III 그리고Chung’s equation-IV에 의하여 화재위험성 지수를 산정하였다. 시험편은 낙엽송, 러시아 물푸레나무, 샤벨, 녹나무를사용하였다. 콘칼로리미터(ISO 5660-1)를 사용하여 시험편에 대한 화재 특성을 시험하였다. 시험편의 연소 종료 후Chung’s equations에 의해 산정된 화재성능지수-II (FPI-II)는 1.56∼8.12 s2/kW로 나타났고, 화재성장지수-II (FGI-II)는0.03∼0.23 kW/s2로 나타났다. polymethylmetacrylate (PMMA)를 기준으로 한 화재성능지수-III (FPI-III)는 5.27∼27.36으로 나타났고, 화재성장지수-III (FGI-III)는 0.20∼1.58으로 나타났다. 화재위험성 등급인 화재위험성지수-IV(FRI-IV)는 러시아 물푸레나무와 녹나무가 각각 0.27과 0.30으로 비교적 화재위험성이 높은 목재로 나타났다. 그러므로 체적밀도가 낮거나 휘발성 화합물을 함유하고 있는 목재는 FPI-II와 FPI-III가 낮아지고, FGI-II와 FGI-III가 높아짐에 의하여 FRI-IV가 높은 값을 나타내었다.

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