The Study of Concrete Mixture Planning with the Addition of Superplasticizer and the use of Silica Fume as a Substitute of Cement. dynamicsaint [Internet]. 2020 Oct. 30 [cited 2024 Nov. 21];5(2):964-7. Available from: https://journals.ukitoraja.ac.id/index.php/dynamicsaint/article/view/1119