Paramitha, Kharisma Keysia, Yuyun Tajunnisa, and Wiwik Dwi Pratiwi. “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, no. 2 (September 2, 2025): 158–168. Accessed January 28, 2026. https://journal.its.ac.id/index.php/joe/article/view/8255.