Evaluation The Effect Of Reinforcing Bar On The Compressive Strength Of Concrete

Abstract

In this study focus on the evaluation of concrete strength made of brick and stone aggregate by using cylinder. one sizes cylinder diameter (4 inch) are used to find out the effect of core diameter on the core strength. Three different sizes of rebar diameter (10mm, 12mm, 16mm) without rebar are used to evaluation the effect rebar presence in core on the core strength. concrete was prepared with two mixing ratios (1:1.5:3 and 1:2:4) & different materials (Bricks & stone chips) Each mix ratio of fresh concrete, three ∅4"x8"cylinder samples were taken and tested at 28 days. From the cylinder, 48 numbers cylinder of 4inch diameter core samples were taken. Each diameter of core, three samples were taken without presence of rebar and other core samples were taken with presence of 10mm, 12mm, 16mm rebar in each set of core samples. The cylinders and concrete core samples were tested. The test results are analyzed. From the test results, it is found that cylinder strength (with rebar) decreases significantly with compare to cylinder strength (without rebar). Strength of with rebar(10mm,12mm,16m) is decreased about 13.60% and 17.64%,21.93% respectively with compare to cylinder strength (without rebar) for stone & ratio 1:1.5:3. Strength of with rebar(10mm,12mm,16m) is decreased about 12.11% and 22.05%,30.76% respectively with compare to cylinder strength (without rebar) for bricks & 1:1.5:3. respectively with compare to cylinder strength of between mixing ratios (1:1.5:3 and 1:2:4) & different materials (Bricks & stone chips), without rebar & different rebar. It is found that cylinder strength (with rebar) decreases significantly with compare to cylinder strength (without rebar). Strength of with rebar(10mm,12mm,16m) is decreased about 10.62% and 21.76%,23.42% respectively with compare to cylinder strength (without rebar) for stone & ratio 1:2:4. Strength of with rebar(10mm,12mm,16m) is decreased about 16.10% and 28.14%,35.11%, respectively with compare to cylinder strength (without rebar) for bricks & 1:1.5:3, respectively with compare to cylinder strength of between mixing ratios (1:1.5:3 and 1:2:4) & different materials (Bricks & stone chips), without rebar & different rebar