“Study Addition of Bamboo Leaf Ash as a Substitute for Cement and Coconut Fiber as an Additive to the Compressive Strength of Concrete: Addition of Bamboo Leaf Ash as a Substitute for Cement and Coconut Fiber as an Additive to the Compressive Strength of Concrete”, teras, vol. 11, no. 3, Sep. 2021, Accessed: May 26, 2026. [Online]. Available: https://ojs.unsiq.ac.id/index.php/teras/article/view/3162