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 [Internet]. 2021 Sep. 30 [cited 2026 May 26];11(3). Available from: https://ojs.unsiq.ac.id/index.php/teras/article/view/3162