Effect of water absorption on the mechanical properties of cotton fabric-reinforced geopolymer composites

Cotton fabric (CF) reinforced geopolymer composites are fabricated with fibre loadings of 4.5, 6.2 and 8.3wt%. Results show that flexural strength, flexural modulus, impact strength, hardness and fracture toughness are increased as the fibre content increased. The ultimate mechanical properties were...

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Bibliographic Details
Published inJournal of Asian Ceramic Societies Vol. 2; no. 3; pp. 223 - 230
Main Authors Alomayri, T., Assaedi, H., Shaikh, F.U.A., Low, I.M.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.2014
Taylor & Francis Group
Subjects
Geopolymer composites
Mechanical properties
Microstructures
Water absorption
Mechanical properties
Geopolymer composites
Water absorption
Microstructures
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Summary:Cotton fabric (CF) reinforced geopolymer composites are fabricated with fibre loadings of 4.5, 6.2 and 8.3wt%. Results show that flexural strength, flexural modulus, impact strength, hardness and fracture toughness are increased as the fibre content increased. The ultimate mechanical properties were achieved with a fibre content of 8.3wt%. The effect of water absorption on mechanical and physical properties of CF reinforced geopolymer composites is also investigated. The magnitude of maximum water uptake and diffusion coefficient is increased with an increase in fibre content. Flexural strength, modulus, impact strength, hardness and fracture toughness values are decreased as a result of water absorption. Scanning electron microscopy (SEM) is used to characterise the microstructure and failure mechanisms of dry and wet cotton fibre reinforced geopolymer composites.
ISSN:2187-0764
2187-0764
DOI:10.1016/j.jascer.2014.05.005