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Application

A moderately hydraulic lime binder for the production of mortars particularly suited for ecological new build, restoration and preservation works. The product’s special composition allows the mortar product to breathe and also permits constant hygrometric exchange between the substrate and the environment.

Description

SMET NHL 3.5 is a high quality pure natural hydraulic lime binder, produced under an ISO 9001 and ISO 14001 quality system to BS EN 459-1. The moderate hydraulic strength development of SMET NHL 3.5 makes it suitable for producing lime mortars for masonry work, rendering, plastering base coats and limecrete.

Benefits:

  • Historical, gypsum and cement-free NHL.
  • Produces highly breathable mortars.
  • Highly sulfate resistant.
  • Low-stress hardening process.
  • Excellent subsequent hardening.
  • High water retention and elasticity in produced mortars.
  • Excellent bond properties to masonry.
  • EN 459-1.
  • CE marked.

Applications:

A moderately hydraulic lime binder for the production of mortars particularly suited for ecological new build, restoration and preservation works. The product’s special composition allows the mortar product to breathe and also permits constant hygrometric exchange between the substrate and the environment.

General information
Specification data - Hydraulic limes
Product Reference

SMET NHL 3.5

Standard product features

Technical characteristics:

  • Mechanical strength, 28 days: Approx. 4.25 MPa.
  • Fineness at 90 μ: 4%.
  • Fineness at 200 μ: 0.7%.
  • Expansion: 0.5 mm.
  • Bulk density: 0.8 g/cm³.
  • Real density: 2.71 g/cm³.
  • Free water content: 0.87%.
  • Free lime content: Approx. 26.8%.
  • SO3: Approx. 1.22%.

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