Article No. 074230

    RM

    Mineral stone replacement mortar

    Variant
    Colour: Restoration Mortar | 0742
    Packaging unit

    Product specifications

    On delivery

    Flexural tensile strength After 7 days: approx. 4 N/mm²
    After 28 days: approx. 5 N/mm²
    Compressive strength Normal < 13 N/mm²
    Soft < 8 N/mm²
    E-modulus (DIN 1048) Normal approx. 11 kN/mm²
    Soft approx. 7 kN/mm²
    Maximum grain size Fine 0.2 mm
    Medium 0.5 mm
    Coarse 2.0 mm
    Bond strength (28 d) Approx. 0.5 N/mm²
    Bulk density Approx. 1.7 kg/dm³
    Water requirement 3.9 - 5.0 l/30 kg
    Shrinkage deformation DIN 52450 After 7 days: approx. -0.3 mm/m
    After 28 days: approx. -0.7 mm/m

    The stated values represent typical product characteristics and are not to be construed as binding product specifications.

    Field of application

    • For use indoors and outdoors
    • Restoring, supplementing and re-profiling mineral substrates such as natural stone, brick, concrete and synthetic stone
    • Reproducing ornamental building elements in a tamping procedure

    Properties

    • Low free alkali content
    • Good flank adhesion
    • Low inherent stress
    • UV-resistant pigments
    • Can be made hydrophobic
    • Preparation
      • Substrate requirements

        Clean, dust-free and capable of supporting a load.

      • Preparations

        Any necessary cleaning measures should be performed as gently as possible, e.g. by spraying with cold or hot water or steam cleaning; stubborn dirt should preferably be cleaned using the rotec soft blasting method or Remmers cleaning products (e.g. Facade Cleaner Paste, Clinker Cleaner AC, Combi WR).

        Preserve valuable heritage ornamental elements and statues by carefully removing encrusted dirt and using the appropriate Remmers Stone Strengthener to carry out repeated intensive strengthening.

        For further details on preparing substrates using stonemasonry techniques, see the separate document "Instructions for Use".

    • Application
      • Mortar cover / Filling knife / Trowel application
      • Application temperature: min. 5 °C max. 30 °C
      • Application requirements

        Temperature of the material, air and substrate: from min. +5 °C to max. +30 °C

      • Apply a contact layer to the pre-wetted substrate using grout (dry mortar/water) in a layer thickness of approx. 2 mm.

        Apply the mortar onto the contact layer wet-on-wet in layer thicknesses of 1.5 to 3 cm, 1 to 2 mm beyond what will become the final surface.

        Joints in the masonry must be maintained.

        Application of thin layers at the edges of defective areas can be facilitated by adding Remmers Haftfest to the mixing water (mixing ratio 1:10). In this case, hardening will be somewhat delayed but the bonding strength will be increased.

        After sufficient hardening (when the grain pops), roughen the surface or scrape down to the final surface.

        Rework the repaired areas (using a scraper or abrasion tool) onto the structure surrounding the defective area.

        Wait at least 24 hours before applying subsequent layers.

    • Application instructions
      • Once it has hardened, mortar must not be made workable again by adding either water or more wet mortar.

        The type and duration of the reworking and surface treatment will influence the colour.

        Slight deviations in colour between different batches are possible.

        Protect wet mortar surfaces against frost, rain and drying out too quickly for at least 4 days.

    • Working tools / cleaning
      • Mortar cover / Filling knife / Trowel application
      • Mixing tool, wide brush, trowel, filling knife, foam rubber float, scraper

      • Clean tools with water while the material is still fresh.

    • Storage / shelf life
      • Protect form moisture
      • Shelf-life 12 months
      • If stored in an unopened container and in a dry place, the product will keep for approx. 12 months.

    • Usage
      • Approx 1.6 kg / l void
      • Approx. 1.6 kg/l cavity

      • Apply to a large enough trial area to determine the precise amount required.

    • General information
      • May contain traces of pyrite (iron sulphide).

        Do not use on gypsum-based substrates.

        The characteristic data of the product were calculated under laboratory conditions at 20°C and 65% relative humidity.

        The mixing water must be of drinking water quality.

        Low chromate content in accordance with Directive 2003/53/EC.

        Special colour according to colour number (MF no., colour swatches, NCS etc.) or submitted sample (in the case of changing or alternating colours, clearly mark the desired colour).

        The colour that is obtained after drying and hardening depends on the ambient conditions and the processing method. For instance, a freshly smoothed surface will be lighter than one that is smoothed later or roughened. Different grain sizes of the same product may lead to slight differences in colour. Substrates soaked from the back may cause discolouration.

        Always set up a trial area/trial areas first.

        Alkaline binders may cause a dissolution process on non-ferrous metals.

        Deviations from applicable regulations must be agreed separately.

        The relevant test certificates must be observed when planning and carrying out work.

    • Disposal instructions
      • Larger quantities of leftover product should be disposed of in the original containers in accordance with the applicable regulations. Completely empty, clean containers should be recycled. Do not dispose of together with household waste. Do not allow to enter the sewage system. Do not empty into drains.

    • Safety / regulations
      • For further information on the safety aspects of transporting, storing and handling the product and on disposal and environmental matters, please see the current Safety Data Sheet.

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