FoamLime BASE mortar protects against outdoor weather and mechanical loads.
FoamLime BASE is a mortar manufactured from natural hydraulic Lime NHL-5 and high calcium content (CL-90-S) slaked or hydrated lime, both certified under UNE-EN 459-1:2010 Standard; siliceous and calcareous sands of great purity and compensated granulometries according with UNE-EN 12620, UNE-EN 13139, UNE-EN 13043 and UNE-EN 13242 Standards as well as from fibres and biodegradable additives
This mortar has exceptional qualities, which cannot be obtained in a natural way with cements or artificial limes, such as double setting.
This double setting comprises a first one, hydraulic and fast, due to the hydraulic lime content with which an immediate hardening is obtained on site, and a second, aerial and slow, as the result of carbonation produced by Carbon Dioxide pressure on slaked or hydrated lime.
FoamLime BASE properties
- The hexagonal shape of the hydrated lime crystals provides higher plasticity.
- The high fineness of hydrated lime (around 1 micron) as well as the aggregate content favours workability.
- The larger specific surface of lime provides better workability and plasticity and the smaller particle size favours a greater coating of the aggregate.
- It is compatible with the system and the other materials it is made up from, from a chemical, structural and mechanical point of view.
- It has excellent adherence to the base substrate due to its lime fineness and water retention which maintains its alkaline pH (>12) longer.
- Great elasticity which favours the adaptation to substrate deformations without producing cracks.
- Constant volume under variable humidity conditions.
- Provides aesthetic and homogeneous looks.
- Less expansion and light shrinkage.
- Higher flexibility under given mechanical conditions.
- Does not produce efflorescence (white stains appear, produced by soluble alkaline salts—sodium and potassium sulphate) due to the fact that the lime it contains has been manufactured from high-quality raw materials and sodium and potassium content is below 0,01%, with an amount of soluble salts much lower than that of cement thus avoiding important damage to the stone/mortar system because of crystallization and/or hydration cycles.
- Greater permeability—dampness is evacuated toward the exterior as vapour.