Mechanical properties of geopolymer foam at high temperature

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Show simple item record Le, Van Su Szczypinski, Michal M. Hájková, Pavlína Kovačič, Vladimír Bakalova, Totka Voleský, Lukáš Hiep, Le Chi Louda, Petr 2020-06-01T08:20:21Z 2020-06-01T08:20:21Z 2020-01
dc.description.abstract In this work, geopolymer foam composites containing waste basalt fibre (10, 30, and 50%wt) were exposed to elevated temperatures of 200, 400, 600, 800 and 1000 degrees C. With an increase in high temperature, the geopolymer foams material exhibits a decrease in compressive strength and bending strength. When heated above 600 degrees C, geopolymer foams materials exhibit a significant reduction in mechanical properties. It shows clearly with the naked eye that surface cracks in case of samples containing 10% of basalt filler. However, when increasing fillers with basalt fibres up to 30% and 50%, the cracking of the sample surface is no longer visible to the naked eye. Especially when the temperature increases, the mechanical properties also increase without decreasing in the sample of 50% by weighing to the binder. The results show that reinforcing the geopolymer foams with basalt ground fibre improves the mechanical properties at high temperatures. cs
dc.format.extent 10 stran cs
dc.language.iso cs cs
dc.subject aluminium cs
dc.subject compressive strength cs
dc.subject flexural strength cs
dc.subject agent powder cs
dc.subject basalt fibre cs
dc.title Mechanical properties of geopolymer foam at high temperature cs
dc.identifier.doi 10.1515/secm-2020-0013
local.relation.volume 27
local.relation.issue 1
local.citation.spage 129
local.citation.epage 138

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