Correlation of microstructure and mechanical properties of various fabric reinforced geo-polymer composites after exposure to elevated temperature. Issue 9 (November 2015)

• Record Type: Journal Article
• Authors: Samal, Sneha; Phan Thanh, Nhan; Petríková, Iva; Marvalová, Bohdana; Vallons, Katleen A.M.; Lomov, Stepan V.
• Is Part Of: Ceramics international. Volume 41:Issue 9(2015)Part B
• Page Start: 12115
• Page End: 12129
• Publication Date: 2015-11
• Subjects: C. Mechanical properties -- Carbon fiber -- Geocomposite -- E-glass fiber -- Basalt fiber; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.06.029
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: This article presents the correlation between microstructure and mechanical properties such as flexural strength, flexural modulus of fabric reinforced geo-polymer composite after their exposure to elevated temperature (up to 1000 °C). Geo-polymer matrices with Si:Al ratio of 15.6 were synthesized and the samples of geo-polymer composite were fabricated with three different types of fabric reinforcements such as carbon, E-glass and basalt fibers. The residual strength of carbon based geo-polymer composite increased with increase of the processing temperature after 600 °C. The basalt reinforced geo-polymer composite strength decreased at higher processing temperature, which may be due to the strong interaction between matrix and fiber and transformation of the composite into a ceramic-like structure. The non-adhesion of E-glass fiber to geo-polymer matrix and pyrolysis of the fiber at high temperature has been observed in the composite. Carbon reinforced geo-polymer composite can be possible candidate for the high temperature applications in thermal barrier coatings and panels.