What is the typical function of course aggregates in construction?

Course aggregates play a crucial role in construction primarily by providing strength and stability to concrete and other structural materials. They consist of larger particles, typically ranging from 3/8 inch to several inches in diameter, which serve to give bulk and structural integrity to concrete mixes. When combined with cement and fine aggregates, they create a composite material that can withstand significant loads and stresses.

By enhancing the overall strength of the concrete, coarse aggregates help resist compressive forces, making them essential in the construction of foundations, roads, bridges, and various other structures. This strength is critical for ensuring the longevity and durability of the structures, as it helps them withstand external forces such as wind, earthquakes, and other environmental factors.

While other functions such as filling gaps, serving as decorative elements, or absorbing water may be associated with different materials or parts of construction, the primary and most significant role of coarse aggregates is to provide the necessary strength and stability that support the entire structure.