Magnetic Aggreagates and Steel Fibre Combination Effect on Improving of Mechanical Characteristics of High Weight Concrete

In this paper, the mechanical properties of special concrete with magnetic heavy weight aggregates and steel fibres, from 24 different mixed designs with 0, 50, 100% of heavy weight aggregates replacing with regular aggregates, 0.52 and 0.4 water-cement ratios and 0, 1, 1.5 and 2% of steel fibers, totally 300 specimens including cubic, cylindrical, and beam was investigated. The results showed that the compressive, tensile and shear strenghts were improved with using special aggreagate and fibres particularly with 50% high weight aggreagate and 2% steel fibres.