C. Teh Hao Wern and N. Ali, “Fresh Properties and Compressive Strength of 3D Printing Concrete Containing GGBS with Varies in Water-Cement Ratio”, rtcebe, vol. 5, no. 1, pp. 205–215, Sep. 2024, Accessed: Apr. 08, 2026. [Online]. Available: https://penerbit.uthm.edu.my/periodicals/index.php/rtcebe/article/view/8036