Experimental Investigation on Chemically Treated Hooked End Steel Fiber Embedded in Rubberized Concrete

The bond mechanism of hooked end fiber is investigated in the current research by means of single-fiber pull-out test conducted for normal and high strength concrete. The recycled devulcanized rubber is partially added to the concrete as an alternate to fine aggregate up to certain percentage. In the current research, hooked end steel fiber (untreated and treated) is embedded in four different concrete composites. The experimental results revealed that, out of all combinations, the treated hooked end fiber tested with half embedment length possesses maximum peak load caused by tension. The results also reveal that the increase in diameter and embedment length along with compressive strength directly enhances the maximum pull-out load.