Waste Concrete as a Substitute for Coarse Aggregate Materials for Compressive Strength of Concrete Fc’ 20,75 MPa. U Karst [Internet]. 2022 Apr. 30 [cited 2026 Jan. 31];6(1):31-42. Available from: https://ojs.unik-kediri.ac.id/index.php/ukarst/article/view/2338