CAL NHL POLVO

DESCRIPTION

DESCRIPTION

Hydraulic conglomerate obtained for the calcareous clayey cooking without addictions and constituted mostly by silicates and calcium aluminates and calcium hydroxide.

Enforcements

  • Rehabilitation and interior and exterior restoration of emblematic and old buildings. It can be perfectly used in new construction. Allows “extra fine” finishes and textures.

Properties

  • Its characteristics are result only of an adequate raw material composition. It does not contain addictions.
  • Hydraulic setting for a chemical reaction of its own component, and it brings excellent resistances in the short time.
  • Compatibility with the building methods and old materials from the chemical, structural and mechanical points of view.
  • Constancy of low humidity variable conditions volume.
  • Lower expansion, weak retraction and bigger flexibility under determined mechanical conditions that facilitate the adaptation to the support deformation without provoking cracking.
  • Lower water-tightness in front of chemical attacks (vibrations, wind, frost-thaw cycle) and chemical (rain, salts, acids, etc.).
  • Bigger durability/ it does not produce efflorescence due to the lime that contains that has been manufactured with high quality raw material without additions.
  • Bigger structural activity, for the cracks auto seal: the mortar absorbs water, dissolving the hydrated lime that penetrates in the gaps and cracks where it gets re-carbonated to seal them. This phenomenon is related with dissolution / re-precipitation of the calcite and depends on the lime pureness.
  • Capacity of keeping the aspect and firmness original bringing higher durability.
  • Excellent adherence to the support due to its fineness and the water retention that maintains during more time its basic pH (> 12).
  • Due to its pureness it offers an excellent permeability, allowing the gaseous changing between the interior and exterior of the building and letting the walls “breath”

Download the technical sheet

Enter your email address