• UZAIR HASAN
• AMAN BATHLA
• AWAIS NAZIR MALIK

In this study, I have examined that the mechanical properties of concrete can be made better by the inclusion of a single type of fiber, but it is not so effective. The incorporating hybrid fiber of two fibers into concrete can lead to improvements and representation of their benefits. Here three types of fiber were examined: hooked-end steel fiber, crimped-end steel fiber and crimped polypropylene fiber. This paper presents compressive strength properties of steel-polypropylene fiber reinforced concrete compared to hybrid reinforced concrete and plain concrete. All these results were performed on normal concrete along with steel-fiber concrete, polypropylene concrete and hybrid concrete in 7 and 28 days by the universal testing machine. Various volume percentages of fibers are added i.e. steel (0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%) and polypropylene (0.1%, 0.2%, 0.3%, 0.4%, 0.5%). From the investigation, it was found that steel and polypropylene (0.8% & 0.2%) gave the best result for all the three fibers used and out of the hooked-end and crimped-end steel fiber, hooked-end gave more compressive strength and it was also effective, so hooked-end steel fiber was used for hybrid reinforced fiber content. For the hybrid reinforced fiber content, same volume percentages were prepared for hooked steel and polypropylene (0.5%-0.5%), (0.6%-0.4%), (0.7%-0.3%), (0.8%-0.2%), (0.9%-0.1%), (1.0%-0.0%). Here, also the (0.8%-0.2%) of steel-polypropylene gave the highest compressive strength from all the volume percentages which is 59.65MPa.

Concrete, Steel Fiber, Polypropylene Fiber, Hybrid Fibers, Fiber Reinforced Concrete, Compressive strength

"INVESTIGATION FOR COMPRESSIVE STRENGTH OF STEEL-POLYPROPYLENE FIBER FOR PAVEMENT CONSTRUCTION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.73-77, June-2019, Available :http://www.jetir.org/papers/JETIR1906595.pdf

"INVESTIGATION FOR COMPRESSIVE STRENGTH OF STEEL-POLYPROPYLENE FIBER FOR PAVEMENT CONSTRUCTION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp73-77, June-2019, Available at : http://www.jetir.org/papers/JETIR1906595.pdf