Effect of Recycled Tyre Steel Fiber on Compressive Strength of Hollow Concrete Blocks

Concrete is the most commonly used construction material. This being most adaptable used material in buildings, cementitious material upgrading becomes extremely crucial. Destructive nature combined with brittle failure and restricted tensile strength are considered as the two main obstacles of conventional concrete. This study attempts to investigate the consequence of addition of steel fiber in different amounts in hollow concrete blocks. The main objective of the study is to find the optimum value of steel fiber content and the effect of addition of steel fiber on the compressive strength of hollow concrete blocks. The hollow concrete block samples were tested for compressive strength after twenty eight days of curing time and a distinguished increase in compressive strength were observed for all percentage addition of steel fibers when compared with the control sample. Specimens of hollow concrete blocks with steel fiber of aspect ratio thirty two but different fiber volume (1.00%, 2.00%, 2.50%, 3.00%, and 3.50%) and the control hollow concrete blocks were prepared. The comparison on the performance of those hollow concrete blocks and the control sample has done. Hollow concrete block with steel fiber of 2.50% by volume gave the optimum value of compressive strength, and hollow concrete block with steel fiber of 3.00% by volume gave the optimum value of density compared to the remaining hollow concrete blocks. It was found that the specimen of hollow concrete block with this percentage of steel fibers satisfied the objectives of this study.