Interaction Diagram for Crack Control of Steel Fiber Reinforced Concrete with Additional Reinforcing Bars

Abstract

This research was to study the residual tensile strength and flexural of steel-fiber reinforced concrete with additional reinforcing bar. The test was conducted in accordance with BS EN 14651. The crack width due to one-way flexural strength of the steel-fiber-concrete rebar reinforcement was studied and the crack width was calculated by using the the EUROCODE 2 standard developed by Löfgren. To create an algorithm for analyzing flexural strength with axial force for safety envelope, using crack width as a control parameter. From the algorithm results, it was found that Research shows that the amount of rebar, the thickness of cross-section, and the amount of steel fibers all affect the crack width that occurs. By inserting rebar into the cross-section, the crack width due to bending force is reduced. While increasing the thickness, the cracking moment becomes higher. The study also found that when using the EUROCODE 2 standard crack width as a safety control, the cross-section of steel fiber reinforced concrete with rebar can only carry 20 to 30 percent of the bending force.