Coarse aggregate is a construction material that is typically made up of crushed stone, gravel, or recycled concrete, with particles that are larger than 0.2 inches in diameter. It is one of the two main types of aggregate used in concrete production, the other being fine aggregate.
Coarse aggregate is typically used to provide strength and bulk to the concrete mixture. It is added to the mixture to help resist compressive forces and to provide a stable structure for the concrete. The size, shape, and surface texture of the coarse aggregate particles can also affect the workability and finish of the concrete.
The quality of coarse aggregate is important for the strength and durability of the final concrete product. Coarse aggregate should be clean, well-graded, and free of contaminants such as clay, silt, and organic matter. It should be hard, durable, and resistant to abrasion and impact. The size of the coarse aggregate particles should also be appropriate for the intended use of the concrete.
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