EFFECTS OF FLEXURAL REINFORCEMENT RATIO ON CRACKING MOMENT OF CONCRETE FOOTINGS

Tests were performed on 15 concrete footings, supported on granular soil to assess effect of flexural reinforcement ratio when bending cracking occurs. Square footings of 450 mm by side and 80 mm thickness were used, resulting in a ratio (Lv/H=2.9). Results of previous tests made at University of Sucre were included to compare; managing to analyze reinforcement ratios corresponding to 0%, 0.55% and 1.1%. This study proposes to compare the bending resistant moment experimentally estimated, with the prediction of cracking moment established in the ACI318-14 code. The experimental study it concluded that the flexural reinforcement ratio provided, affects load magnitude under which onset of cracks occurs due to bending.