Inorganic polymer foams: transform from non-structural to structural upon fire

Zhang, Zuhua and Yang, Tao and Wang, Hao and Yao, Xiao (2013) Inorganic polymer foams: transform from non-structural to structural upon fire. In: 4th International Conference on Smart Materials and Nanotechnology in Engineering (SMN 2013), 10-12 Jul 2013, Gold Coast, Australia.

Abstract

An inorganic polymer is formed by dissolution of aluminosilicate solid materials in a strong alkaline activator solution, polymerization, gelation and/or crystallization. This material possesses many superior properties to normal organic polymers, such as high temperature resistant and non-flammable. This study aims to explore the possiblity of using inorganic polymers as a fire resistant building material. Inorganic polymer foams containing ∼8% of Na2O (mass ratio to solid materials) and 45-50% porosity (in volume) are synthesised from fly ash and slag and with sodium silicate solution as activator. The compressive strength, volumetric stability and phase features of the porous inorganic polymers before and after exposed to 100, 400 and 800oC temperatures are determined and analysed. After exposure to high temperature, the inorganic polymer foam without slag addition maintains the compressive strength at 100oC and 400oC and increases by 40% at 800oC. In contrast, the foam that contains 20% slag, although which has a much higher initial strength than the non-slag foam, can only maintain the strength at 100oC but lose strength dramatically at 400 and 800oC. The measurement of volumetric stability and XRD analysis indicate that the larger shrinkage of slag-containing foam and the decomposition of calcium silicate phases under high temperatures is accounting for the large strength loss. The current study shows a possibility to develop a kind of new building material with the function of transforming from nonstructural to structural upon fire.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © (2013)Society of Photo-Optical Instrumentation Engineers (SPIE). Print copy of the Proceedings held in the USQ Library at call no. 620.5 Fou.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 28 Jan 2014 01:23
Last Modified: 15 May 2017 05:37
Uncontrolled Keywords: fire resistance; fly ash; geopolymer; high temperature strength; inorganic polymer; shrinkage
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
09 Engineering > 0915 Interdisciplinary Engineering > 091505 Heat and Mass Transfer Operations
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
Socio-Economic Objective: B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870303 Polymeric Materials (e.g. Paints)
Identification Number or DOI: 10.1117/12.2027739
URI: http://eprints.usq.edu.au/id/eprint/24124

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