Rheology and elevated temperature performance of geopolymer foam concrete with varying PVA fibre dosage

Article

Dhasindrakrishna, K., Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2022. "Rheology and elevated temperature performance of geopolymer foam concrete with varying PVA fibre dosage." Materials Letters. 328. https://doi.org/10.1016/j.matlet.2022.133122
Article Title

Rheology and elevated temperature performance of geopolymer foam concrete with varying PVA fibre dosage

ERA Journal ID1005
Article CategoryArticle
AuthorsDhasindrakrishna, K., Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay
Journal TitleMaterials Letters
Journal Citation328
Article Number133122
Number of Pages4
Year2022
PublisherElsevier
Place of PublicationNetherlands
ISSN0167-577X
1873-4979
Digital Object Identifier (DOI)https://doi.org/10.1016/j.matlet.2022.133122
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S0167577X2201477X
AbstractThis study presents the effects of Poly Vinyl Alcohol (PVA) fibre on the rheology and fire resistance of geopolymer foam concrete (GFC), which are important for the foam stability and elevated temperature performance of GFC respectively. The yield stress of fresh geopolymer slurry and the interstitial paste, the strength of the hardened GFC and their fire resistance were assessed and correlated to the fibre content. The results showed that the yield stress of geopolymer slurry and interstitial paste increased with the fibre dosage by up to 16 times. Adding fibre also continuously improved the compressive strength by up to 54%. Furthermore, the residual strength after exposure to elevated temperatures was improved with the fibre until 2% dosage; this was noticeable until 200°C. However, further increasing the fibre dosage deteriorated the residual strength.
KeywordsAerated geopolymer
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020400505. Construction materials
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Byline AffiliationsSchool of Engineering
Centre for Future Materials
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