Modification of UHPC Matrix and Fiber Surface for Improving the Mechanical Performance of Ultra-High-Performance Fiber-Reinforced Concrete

In this study, filler and silica fume were substituted by Liquid crystal display glass powder (LCDGP) nanosilica, respectively, to improve the performance of ultra-high- fiber-reinforced concrete. addition, surface steel fiber was modified with ethylenediaminetetraacetic acid (EDTA) solution interfacial friction between Ultra-high-performanceconcrete (UHPC) matrix. Both LCDGP nanosilica reacted calcium hydroxide form hydrates, roughness increased owing EDTA treatment. When used, compressive strength decreased a decrease in packing density; however, tensile strengths Ultra-high-performance fiber-reinforced-concrete (UHPFRC) improved on using nanosilica. It observed that modification force UHPC interface; therefore, it more effective improving than strength.