The thesis examines the influence of steel fibres on the bond strength between a reinforcing steel bar with a diameter of 20 mm and standard-strength concrete with a water-binder ratio of 0.52 and the influence of steel fibres on the compressive strength of different types of concrete. The types of concrete researched contained an identical amount of steel fibres and only differed in type of cement used. The control concrete contained no steel fibres. Three types of cement were used, differing from each other in the amount of cement clinker. The standard cement contained 65% of clinker, the special cement contained 80% and the pure Portland cement contained 95%. The basic formulations of the mixfures were based on the formulations from Drago Saje’s doctoral thesis from 2001. Appropriate standard tests were also carried out on fresh concrete. We have found that the effect of steel fibres on the bond strength between concrete and rebar was greatest in those types of concrete that contained standard Portland cement.