This research aims at to evaluate the effect of steel fiber on concrete specimens under compressive strength. The compression strength test was determined in three groups with three specimens each, a control group and two experiments with proportions of 25 and 30 kg/m3 of steel fiber. a compression test was made on the specimens at the age of 14 days. The results of the group with the highest resistance is that with a proportion of 25 kg/m3 of steel fiber with resistance 212,39 kg/m2, exceeding the control group by 1,1%.
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