Characteristics and how it is made
Mortar is considered one of the most popular materials
used in the construction field and is composed of binders, normally lime
or cement, and from inert materials, i.e. sand and water.
The binders, in this case, serve precisely to bind the
compound and to give the mortar its setting characteristics and to
determine its resistance.
Furthermore, there are different types of binder, but one of
the most used is certainly natural hydraulic lime.
But, what is hydraulic lime? Let’s find out together…
Hydraulic lime
Hydraulic lime is defined as the heir to lime
hydrates and the forerunner of cement binders, and is called hydraulic for
due to its ability to set and harden in contact with water.
In addition, hydraulic lime is obtained from the firing of
limestone rocks rich in silica and can be both natural and artificial.
Hydraulic lime
natural
Natural hydraulic lime is produced by cooking the
marl, i.e. an impure limestone rock, or mixtures of limestone and clay
at a temperature of approximately 1000°, inside special ovens. And, once
Once out of the oven, the material is quenched and then ground.
But why are such high temperatures used?
Because such temperatures allow you to obtain a powder
rich in calcium hydroxide and calcium silicates. And the reaction between silicates
of lime and the hydrated lime will determine the hydraulicity of the product.
In addition, natural hydraulic lime, after quenching and
during maturation, it converts into a kind of powder with a variable color
from white to hazelnut.
And, according to the legislation, it is marked with the acronym
NHL (Natural Hydraulic Limes).
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discover our natural hydraulic lime.
If you would like more information on lime
natural plumbing contact us at the email address: info@calcherasangiorgio.it or to
number: 0461 775515.