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. 2021;11(3). Accessed May 26, 2026. https://ojs.unsiq.ac.id/index.php/teras/article/view/3162