STUDYING THE BEHAVIOR OF COMPOSITE SLAG BEAM UNDER SHEAR STUD CONNECTOR IN TENSION AND COMPRESSION ZONES

Every year, the quantity of slag produced in Jordan from steel making is approximately 500,000 ton. This huge amount of slag caused environmental and disposal problems. To solve these problems, research has been carried out to use part of the slag as base course in road making and as aggregate in concrete mixes. The present work used composite beam with shear stud connector and replaced the conventional aggregate by slag at 100%, 75%, 50%, 25%, and 0% (limestone) proportions. The experimental results show increase in stress of about 36.7% when replacing all limestone aggregate with slag. This indicates that the slag aggregates enhanced the strength of the structural element in building and reduced the deflection. Similarly, the strain is reduced in the slag composite beam (as compared with that in limestone beams with zero slag). Consequently, improvement in the modulus of elasticity and stiffness of structural elements occurred. It can be concluded that including slag in beams improves their mechanical properties and may at least partly alleviate the environmental problems arising from production of steel. The presence of shear stud welded on the web prevent the slipping between concrete and steel as seen in the testing of specimens.