M. Mohd Salahuddin, N. Mazlan, F. Mustapha, M. Ishak, and A. Saprudin, “Factorial design approach to investigate the significance of factors on the fire resistant, compression and adhesion properties of geopolymer binder”, J. Mech. Eng. Sci., vol. 14, no. 3, pp. 7191–7204, Sep. 2020.