Tensile strength of concrete reinforced with combined steel and basalt fibers

The article examines how to enhance the load bearing capacity and tensile strength of the concrete structures by dispersing reinforcement using a hybrid mixture of steel and basalt fibers. This experiment used locally available coarse and fine aggregates of the Namangan area, steel and basalt fibers which were manufactured in Uzbekistan. Experimentally Residual tensile strength Residual tensile strength was tested on prismatic specimens 150×150×600 mm. The findings revealed that plain concrete failed brittlely with sudden disbanding whilst fiber-reinforced concrete failed progressively as a consequence of bridging effect of the fibers that supported the integrity of the specimen. It was found out that with an addition of content of steel fibers there was a progressive increase in residual tensile strength with the best performance being recorded at 3 % steel fibers and 0.2 % basalt fibers. The results substantiate the assumption that the joint use of steel and basalt fibers considerably increases the resistance to crack propagation, strength and ductile properties of concrete.