|
|
Limes, mortars, concretes and paints have been used over centuries as building and decoration products.
Today lime has became a noble material that is often utilized to restore historic buildings, cathedrals, castles, or to enter in the green building. Indeed thanks to its numerous qualities ( regulator of hygrometry, great workability, resistant to bacteria and vegetable growth) it is mainly used by professionals or by private persons for individual houses.
Lime is a natural product resulting of the burning of a more or less pure limestone. According to the chemical composition of the original rock, different limes can be obtained.
In Europe, two kinds are mainly used:
- NATURAL HYDRAULIC LIME
 The pure natural and hydraulic lime is obtained by the calcination of rock essentially carbonate of calcium ( limestone) mixed with elements that get transform, during the burning, into silicates and aluminates of calcium. When the lime is used in a mortar blend, these elements, in accurate amount, confers to lime, in a first time, an hydraulic setting. Then it reacts at the air contact; while the limestone, transformed into hydrated lime, begins its setting or carbonation at the ambient air. The pure natural hydraulic lime can enter into composition of binders. It gives to them additional properties, particularly appreciated by building professionals.
- HYDRATED LIME
 Hydrated lime is a product resulting from the calcination of a rock composed of a large amount of calcium carbonate : limestone. It contains very few impurities. It has various uses. Used in mortars it sets when in contact with the air over a long period of time. White hydrated lime is dedicated to decoration works with precautions during frost period because of its low set.
|
|
|