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Cold-formed Light gauge Steel Frame (LSF) floor-ceiling systems are commonly made with non-combustible fire protective membrane to protect the steel floor joists in fire. Thermal improvements to the fire protective membrane delay the heat transfer to structural elements and provide enhanced fire resistance level. Hence, this study addresses the thermal performance of different fire resistant board configurations under standard fire conditions to compare and propose improvements to conventional systems. Small-scale fire tests were conducted for a range of configurations of gypsum plasterboard, calcium silicate board and magnesium oxide board with the inclusion of thin steel sheathing. Fire test results showed that gypsum plasterboard and calcium silicate board performed very similar in regards to insulation criterion based failure times, while magnesium oxide board performed considerably worse. In all cases steel sheathing provided improved failure times. Improvements of 48%, 33% and 47% were obtained for gypsum plasterboard, calcium silicate board and magnesium oxide board when steel sheathing was used. This paper presents the details of the small-scale fire tests of different fire resistant board configurations and the results of time-temperature profiles. Based on these results, optimum fire resistant board configurations are recommended to achieve higher fire resistance levels for LSF floor-ceiling systems.

Titel:	Experimental study of fire resistant board configurations under standard fire conditions
Autor/in / Beteiligte Person:	Steau, Edward ; Mahendran, Mahen ; Poologanathan, Keerthan
Link:	https://eprints.qut.edu.au/205250/1/69035086.pdf https://eprints.qut.edu.au/205250/ https://doi.org/10.1016/j.firesaf.2020.103153
Zeitschrift:	Fire Safety Journal, 2020
Veröffentlichung:	Elsevier Ltd., 2020
Medientyp:	academicJournal
DOI:	10.1016/j.firesaf.2020.103153
Schlagwort:	Calcium silicate board Cold-formed steel floor systems Fire tests Gypsum plasterboard Magnesium oxide board Thin steel sheathing
Sonstiges:	Nachgewiesen in: BASE Sprachen: unknown Collection: Queensland University of Technology: QUT ePrints Document Type: article in journal/newspaper File Description: application/pdf Language: unknown Relation: https://eprints.qut.edu.au/205250/1/69035086.pdf; Steau, Edward, Mahendran, Mahen, & Poologanathan, Keerthan (2020) Experimental study of fire resistant board configurations under standard fire conditions. Fire Safety Journal, 116, Article number: 103153.; https://eprints.qut.edu.au/205250/; Centre for Data Science; Centre for Materials Science; Science & Engineering Faculty; Faculty of Science; School of Civil & Environmental Engineering Rights: free_to_read ; http://creativecommons.org/licenses/by-nc-nd/2.5/ ; 2020 Elsevier Ltd ; This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au

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Experimental study of fire resistant board configurations under standard fire conditions