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http://dx.doi.org/10.14346/JKOSOS.2017.32.5.149

An Experimental Study on the Development of Fire-retardant Treated Wood for Construction  

Seo, Hyun Jeong (Department of Safety Engineering, College of Engineering, Incheon National University)
Kim, Nam Kyun (Department of Safety Engineering, College of Engineering, Incheon National University)
Jo, Jeong Min (Department of Safety Engineering, College of Engineering, Incheon National University)
Lee, Min Chul (Department of Safety Engineering, College of Engineering, Incheon National University)
Publication Information
Journal of the Korean Society of Safety / v.32, no.5, 2017 , pp. 149-156 More about this Journal
Abstract
This study investigates fire-retardant performances and combustion/thermal characteristics of fire-retardant treated wood by comparing them with those of fire-retardant untreated wood from the expreimental resutls of cone calorimeter and thermo-gravimetric(TG) analyzer. Hazardousness of combustion product gases for fire-retardant treated wood and untreasted wood were also observed from the results of internal finish material incombustibility test according to the Korea standard code of KS F 2271. In this study, we also tried to improve the fire retardant performance of wood by applying fire-retardant chemical composites, and to secure the fire safety performance in buildings. Red pine (Pinus densiflora) was selected as a test specimen because it is mostly used as a building material in Korea. Fire retardant chemical composites (FRCs) were prepared by mixing boron, phosphorous, and nitrogen species and treated by press-impregnation method. Water-based FRCs were composed of 3% boric acid($H_3BO_3$), 3% borax decahydrate($Na_2B_4O_7$), 8% ammonium carbonate($(NH_4)_2CO_3$), diammonium phosphate ($(NH_4)_2HPO_4$) varied from 10-30% and potassium carbonate($K_2CO_3$) varied from 10-30%. From the test results of cone calorimeter, TG analysis and gas hazard assessments, newly proposed were the optimal composition and production methods of FRCs which can sufficiently meet fire-retardant level 3 based on Korea law of construction. Thus, the FRCs, developed in this study, are anticipated to contribute to the improvement of fire safety and widespread of usage in wood as building materials.
Keywords
Fire-retardant treated wood; cone calorimeter; thermogravimetric analysis; combustion properties; toxicity gases;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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