Safitri E, Wibowo W, Fadhil BD. Compressive Strength Study on Reactive Powder Concrete with 30% Quartz Sand and Variations in Fly Ash Composition as Partial Substitution of Cement. SCBMEJ [Internet]. 2024 Jul. 23 [cited 2025 Apr. 26];1(3):9. Available from: https://journal.pubmedia.id/index.php/civilengineering/article/view/3009