To find the Influence of the Size of the Aggregate of the Compressive Strength of Concrete

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To Find The Influence Of The Size of The Aggregate of The Compressive Strength of Concrete

To find the Influence of the Size of the Aggregate of the Compressive Strength of Concrete

Abstract

To Find The Influence Of The Size of The Aggregate of The Compressive Strength of Concrete The effects of aggregate type, size, and content on the behavior of normal and high-strength concrete, and the relationships between compressive strength, flexural strength, and fracture energy are discussed.Compression test results show that high-strength concrete containing basalt produces slightly higher compressive strengths than high-strength concrete containing limestone, while normal-strength concrete containing basalt yields slightly lower compressive strengths than normal-strength concrete containing limestone.

The compressive strength of both normal and high-strength concrete is little affected by aggregate size. High-strength concrete containing basalt and normal-strength concrete containing basalt or limestone yield higher compressive strengths with higher coarse aggregate contents than with lower coarse aggregate contents. The compressive strength of high-strength concrete containing limestone is not affected by aggregate content.

Conclusion

Given a constant water to cement ratio (0.5) and mix (1:2:4), a change in coarse aggregate size affected the workability (slump) of concrete. The workability (slump) was directly proportional to the aggregate size. It increased from 10.0 mm, 13.5 mm to 20.0 mm for the 9.5 mm, 13.2 mm and 19.0 mm, respectively. As the slump increased, the concrete became more workable. The mean compressive strength of the concrete aggregates was assessed and found to increase with increasing aggregates size.