EXPERIMENTAL INVESTIGATION ON THE COMPRESSIVE STRENGTH OF CONCRETE WITH DIFFERENT SIZES OF COARSE AGGREGATE
Journal: International Journal of Advanced Research in Engineering and Technology (IJARET) (Vol.11, No. 09)Publication Date: 2020-09-30
Authors : D. Pradeep Kumar; Abraham Biable;
Page : 464-472
Keywords : Compressive strength; slump test; water – cement ratio; workability;
Abstract
The grading of aggregates is an important factor in the preparation of concrete and its compression strength. This experimental investigation was conducted to find the impact of different aggregate sizes on the compressive strength of the concrete. The aggregates used in this experiment was 8 mm and 11.2 mm size. The concrete of M 25 grade and the water-cement ratio of 0.4 was used for this experiment. Tests were done on the concrete making materials, on the fresh concrete and hardened concrete. The fresh batches of concrete prepared from each of the coarse aggregate sizes were collected, and the slump test for the collected batches was conducted to determine the workability. In total, 24 concrete cubes of size 150 mm × 150 mm were cast and cured for 28 days. The cubes, after 28 days of curing, were tested in compression testing machine to determine the compression strength of the concrete. The results showed that the workability of the concrete was directly proportional to the aggregate size. And also, the compressive strength increased with an increase in aggregate sizes.
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