Paramitha, K. K. ., Tajunnisa, Y. . and Pratiwi, W. D. . (2025) “Early Age Strength of Development Ultra High-Performance Concrete Using Class-F Fly Ash and Local Materials for Repair”, IPTEK The Journal of Engineering, 10(2), pp. 158–168. Available at: https://journal.its.ac.id/index.php/joe/article/view/8255 (Accessed: 27 January 2026).