Zaid A. Al-Sudani

Performance of Hybrid Crumb Rubber–Steel Fiber Concrete Incorporating Silica Fume and Metakaolin

This study developed hybrid concrete incorporating crumb rubber (CR), micro-steel fibers (STF), silica fume (SF), and metakaolin (MK) to balance strength, stiffness, deformability, and energy absorption. Twenty-six mixtures were produced using 5–20% CR as a volumetric replacement for river sand, 0.5–2.0% STF by concret...