What is an Aggregate?
Aggregate definition - A combination of materials used in construction. Materials include sand, stone and a major amount of concrete.
Ideal Home Garden Explains
Aggregate are extremely durable and last for a long time. It's purpose is to provide reinforcement to the overall composite. Aggregate is commonly used in home improvement projects for the little maintenance that is required, decorative look, resistance to weather extremes, and durability against heavy machinery.