TY - JOUR N2 - This paper reports on the flexural properties of thin fly ash geopolymers exposed to elevated temperature. The thin fly ash geopolymers (dimension = 160 mm × 40 mm × 10 mm) were synthesised using12M NaOH solution mixed with designed solids-to-liquids ratio of 1:2.5 and Na2SiO3/NaOH ratio of 1:4 and underwent heat treatment at different elevated temperature (300°C, 600°C, 900°C and 1150°C) after 28 days of curing. Flexural strength test was accessed to compare the flexural properties while X-Ray Diffraction (XRD) analysis was performed to determine the phase transformation of thin geopolymers at elevated temperature. Results showed that application of heat treatment boosted the flexural properties of thin fly ash geopolymers as the flexural strength increased from 6.5 MPa (room temperature) to 16.2 MPa (1150°C). XRD results showed that the presence of crystalline phases of albite and nepheline contributed to the increment in flexural strength. L1 - http://journals.pan.pl/Content/124083/PDF-MASTER/AMM-2022-3-45-Yun-Ming.pdf L2 - http://journals.pan.pl/Content/124083 PY - 2022 IS - No 3 EP - 1150 DO - 10.24425/amm.2022.139714 KW - thin geopolymer KW - fly ash KW - elevated temperature KW - flexural strength A1 - Ng, Yong-Sing A1 - Liew, Yun-Ming A1 - Heah, Cheng-Yong A1 - Al Bakri Abdullah, Mohd Mustafa A1 - Ng, Hui-Teng A1 - Chan, Lynette Wei Ling PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 67 DA - 2022.08.26 T1 - Flexural Properties of Thin Fly Ash Geopolymers at Elevated Temperature SP - 1145 UR - http://journals.pan.pl/dlibra/publication/edition/124083 T2 - Archives of Metallurgy and Materials ER -