What do you need to add to cement to turn it into concrete?

To turn cement into concrete, you need to add aggregates (such as sand and crushed stone) and water. These ingredients are mixed together in specific proportions to create a cohesive and durable construction material known as concrete. Additionally, other additives like admixtures, fibers, or supplementary cementitious materials can be incorporated to enhance specific properties of the concrete, such as strength, durability, workability, or to achieve certain desired characteristics.