Mohd. Mustafa Al Bakri Abdullah

Preferred name

Mohd. Mustafa Al Bakri Abdullah

Official Name

Abdulah, Mohd. Mustafa Al Bakri

Alternative Name

Abdullah, M.M.A.

M.M.A. Abdullah

Mustafa Al Bakri, A. M.

Albakri Abdullah, M. M.

Main Affiliation

Universiti Malaysia Perlis

CeGeoGTech UniMAP

Scopus Author ID

53164519100

Now showing 1 - 1 of 1

Flexural properties of thin fly ash geopolymers at elevated temperature

( 2021)
Yong-Sing Ng
;
Liew Yun Ming
;
Heah Cheng Yong
;
Mohd. Mustafa Al Bakri Abdullah
;
Hui-Teng Ng
;
Lynette Wei Ling Chan

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 solidsto-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.

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