Frediyansyah, M. T., Sukamta, S., Sulistyowati, R. A. ., Umam, M. . and Lie , H. A. . (2024) “The Influence Of Adding Superplasticizer With Time Interval And Variation Of Water Reduction On The Early Strength And Workability Of Concrete”, Eduvest - Journal of Universal Studies, 4(7), pp. 5577–5591. doi: 10.59188/eduvest.v4i7.1593.