Construction aggregates are materials used in building and construction projects. They include sand, gravel, crushed stone, and recycled concrete. These materials provide strength and stability to structures like roads, bridges, and buildings. Aggregates are essential for creating concrete and asphalt, which are vital for infrastructure development. They help improve drainage, reduce erosion, and enhance the durability of construction projects. The quality and size of aggregates can significantly affect the performance of the final product, making them a crucial component in the construction industry.