Use of Fly Ash for Improvement of Bond Strength with Different Development Lengths

The goal of this research is to explore the feasibility using fly ash concrete for structural applications by testing material’s reinforcement bond properties. A pull-out test was performed on specimens with a 0, 20, 25, and 30 percent replacement cement then compared identical tests control cast from 100 Portland mix. were 12 mm, 20mm, 25 mm steel bars used. Also, compressive cement. As percentage increases slump value decreases. This creates problems in workability concrete. When decreases, increase strength normal ordinary use results an both strength.