Water plus cement plus aggregates. The formula seems simple but the reality of concrete manufacturing is far more complex. The development of formulas for concrete requires very advanced scientific skills. The quality of cement and aggregates, the dosage and the proportions are just some of the variables that influence the properties of concrete.
Concrete is a building material made by mixing water, aggregates and sand with a binding agent (usually cement) and, if necessary, with additives. This mixture is made on building sites and factories.
The characteristics of concrete can vary greatly depending on the choice of cement and cement-aggregates ratio, the type of aggregates used, the inclusion of additives, etc. The way concretes are used and surface treated can also have an impact on their performance and appearance. So concrete is reconstituted stone and is sometimes referred to as "liquid stone".
Concrete is a carefully balanced mix of cement, aggregates and water. Cement acts as the binder and modifies the characteristics and uses of concrete.
Aggregates, another essential ingredient in concrete, retains the intrinsic properties of the rocks that they come from. The colour, chemical and physical characteristics of aggregates have a direct impact on the durability, esthetics and mechanical properties of concrete.