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quand des additifs pour béton ont-ils été utilisés

Concrete additives have been widely used in construction for many decades, and their importance has grown over time. Concrete is a mixture of cement, eau, sable, et agrégat, and it is widely used as a building material due to its durability, force, et résistance aux intempéries. Cependant, traditional concrete mixtures often lack certain properties that make them unsuitable for some applications.
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