betão
Betão is the Portuguese word for concrete. Concrete is a composite material composed primarily of aggregate, a binder, and water. The aggregate is typically composed of coarse aggregate such as gravel or crushed stone, and fine aggregate such as sand. The most common type of binder is Portland cement, which is a manufactured material made from limestone, clay, and other minerals. When mixed with water, Portland cement undergoes a chemical reaction called hydration, which causes it to harden and bind the aggregate particles together.
The properties of concrete can be varied by altering the proportions of its constituent materials, as well