PURE NATURAL LIME

NHL 2

Calce

The NHL 2 is a pure white low resistance St ASTIER Pure Natural Hydraulic Lime, produced using the use of selected siliceous limestones. The baking of the limestones is carried out in vertical ovens at a temperature below 1250°C and reduced in powder by only the breakdown of calcium oxide, without the need for grinding. NHL 2 is totally devoid of pozzolanic materials, blast furnace slags, flying ash or hydraulic binders of any kind (clinker, cement, etc.), VOCs and according to Standard UNI EN 459-1.

Product features

The porosity of Natural Hydraulic Lime NHL 2 guarantees high water vapour diffusion, gives breathability to the substrate, allows the disposal of absorbed water and regulates environmental humidity avoiding the formation of dangerous condensation and moulds. The high basicity of the mixture whose pH is equal to 12.5 makes the surfaces impregnable from biodeteriogenic agents and prevents their proliferation, generating hostile conditions for the survival of pathogenic micro organisms (bacteria, fungi, viruses) causing infections, diseases or allergic reactions. Products obtained with the only NHL 2 binder, being totally mineral; do not constitute "special waste".

Main features

  • PRODUCT TYPE: Pure Natural Hydraulic Lime NHL 2 UNI EN 459-1
  • COLOUR: White Brightness Index 76
  • FINENESS 90 micron: 5%
  • FINENESS 200 micron: 0,5%
  • CHEMICAL ANALYSIS: CaO: 63%; SiO2 insolubile: 8%; SiO2 Combined: 6%; Al2O3: 1,3%; Fe2O3: 0,4%;
    SO3: 0,31%; MgO: 0,75%; MnO: 0,01%; TiO2: 0,12%; K2O: 0,16%; Na2O: 0,04%.
  • MIXTURE pH: >12,5
  • APPARENT DENSITY: aprox. 500 kg/m³
  • FREE LIME Ca(OH)2: 58%
  • EXPANSION: < 1 mm
  • COMPRESSIVE STRENGTH 7 DAYS: 2 MPa
  • COMPRESSIVE STRENGTH 28DAYS: 3-4 MPa
  • PENETRATION: 22,5 mm
  • LOSS ON IGNITION: 20%
  • CURING TIME: 6 h
  • FIRE REACTION (EN13501-1): A1 class
  • COVERAGE: 250-350 kg/m3aggregate
  • PACKAGE: 25 kg bags
  • PALLET: 40 bags of kg 1000
  • STORAGE: keep in dry place for 18-24 months in original package
  • APPLICATION TEMPERATURE : from + 5°C to +32°C
  • REACH CLASSIFICATION: See SDS

Contact us if you would like to know more about this product?

Fill in the form below and you will be contacted as soon as possible by our expert who will recommend the best solution to your problems

  I have read and understood the Privacy Policy - art.13 Legislative Decree 196/2003

Subscribe to our newsletter

  I declare that I have read and acknowledged the Information drawn up according to Legislative Decree 196/2003 'Code Concerning the Protection of Personal Data' and I give my consent to utilise my personal data in order to make use of the 'Newsletter' service with the methods described in the above-mentioned Information