Fire safety of steel wall systems using enhanced plasterboards

Poologanathan, Keerthan, Mahendran, Mahen, & Frost, Ray L. (2013) Fire safety of steel wall systems using enhanced plasterboards. In Proceedings of the 19th International CIB World Building Congress, Brisbane 2013: Construction and Society, Queensland Univeristy of Technology, Brisbane Convention & Exhibition Centre, QLD, pp. 1-12.

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Fire safety design is important to eliminate the loss of property and lives during fire events. Gypsum plasterboard is widely used as a fire safety material in the building industry all over the world. It contains gypsum (CaSO4.2H2O) and Calcium Carbonate (CaCO3) and most importantly free and chemically bound water in its crystal structure. The dehydration of the gypsum and the decomposition of Calcium Carbonate absorb heat, which gives the gypsum plasterboard fire resistant qualities. Currently plasterboard manufacturers use additives such as vermiculite to overcome shrinkage of gypsum core and glass fibre to bridge shrinkage cracks and enhance the integrity of board during calcination and after the loss of paper facings in fires. Past research has also attempted to reduce the thermal conductivity of plasterboards using fillers. However, no research has been undertaken to enhance the specific heat of plasterboard and the points of dehydration using chemical additives and fillers. Hence detailed experimental studies of powdered samples of plasterboard mixed with chemical additives and fillers in varying proportions were conducted. These tests showed the enhancement of specific heat of plasterboard. Numerical models were also developed to investigate the thermal performance of enhanced plasterboards under standard fire conditions. The results showed that the use of these enhanced plasterboards in steel wall systems can significantly improve their fire performance. This paper presents the details of this research and the results that can be used to enhance the fire safety of steel wall systems commonly used in buildings.

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ID Code: 59108
Item Type: Conference Paper
Refereed: Yes
Keywords: Fire safety, Steel wall systems, Enhanced plasterboards, Chemical additives, Fillers, Thermal performance, Standard fire conditions
ISBN: 978-0-9875542-1-5
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 [please consult the author]
Deposited On: 15 Apr 2013 22:20
Last Modified: 01 Aug 2015 11:11

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