The evolution of lime
Mortars for plasters made from lime are one of the oldest methods of construction, due to their ease of cooking as well as their association with the benefits of the environment. Lime is one of the only products that does not have any negative impact on the environment, because it absorbs all the pollution it releases in its acquisition - Lime cycle. The oldest plaster, made from mortar made of lime, are still preserved today, indicating that Cal guarantees increased resistance in the infrastructures.
Unfortunately, Cal Aérea was being excluded from the construction, being replaced by much cheaper secondary products, such as cement, paints and many other materials. The exchange of materials was due to the search for materials with a very different and more practical hardening. However, it is still very much in demand by heritage recovery and reconstruction teams to continue guaranteeing the quality and characteristics of yesteryear. There is and will be a great difficulty for mortars made of cement to replace lime, because they are more difficult to work, they are much more rigid, they are more soluble and it does not guarantee a good breathing of the walls.
Finding a solution of a raw material with the same characteristics as lime will be extremely difficult. Its hydraulic properties, faster hardening and environmental characteristics are hardly imitated by any other material. At the environmental level, this raw material absorbs all the carbon dioxide that it releases in its design.
In short, it should be noted that there is no raw material like Cal, because if we analyze the monuments, they were built with this product, and after so many years, they still have the same characteristics.
