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    Epoxy Terrazzo

    Description

    Marmix is a tricomponent product made up of:

    • Component A: a mix of liquid epoxy prepolymers.
    • Component B: copolymerization amine.
    • Component C: special inert material and fillers.

    Following application and hardening, the product provides a very hard covering featuring c. 70 MPa compression resistance as well as excellent flexibility and mechanical resistance; it is specifically designed for honing and diamond polishing.

    Marmix offers excellent adhesion to the underlying surface and good general reactivity, allowing it to be honed (during summer time) already the following day.

    Marmix is used as a specific mortar for terrazzo and Venetian style floors, with their typical aggregates of assorted marble, glass and coloured sands, either in a coarse-grained or fine-grained (“PASTELLONE”) mix.

    Preparing the underlying surface

    Prepare the surface according to state-of-the-art resin floor requirements: carefully examine the subfloor to make sure it makes up a suitable and structurally sound base.
    This kind of floor must be laid only on surfaces showing compression resistance no lower than 25 MPa and stripping resistance no lower than 2 MPa.

    Sand and concrete footings are not the best choice of underlayment: the required performance can however be easily achieved with special sand/concrete precast footings like NORD RESINE SC-1, or alternatively highly select inert material mixed with SC 1-BASE.
    We recommend in any case adding FIBRE PE by NORD RESINE to the mix for improved performance.

    The footing must be left to set for a suitable length of time (at least 28 days); max residual humidity must be lower than 4% (carbide measurement); if necessary, you can increase the resistance of a sand and porous concrete footing by deep impregnation with NORPHEN SW SOLID (diluted according to technical card instructions); you will need between 100 and 200 g pure product (at least) for each centimetre thickness of the surface to be consolidated.

    Marmix is used as a specific mortar for terrazzo and Venetian style floors, with their typical aggregates of assorted marble, glass and coloured sands, either in a coarse-grained or fine-grained (“PASTELLONE”) mix.

    Industrial quartz concrete can be coated over after shot blasting or diamond wheel sanding (max humidity content 4 %).

    Tiled surfaces must be made rough using a diamond cup wheel.

    Large wood panelled surfaces can be coated over after treating the gaps with NORPHEN PU reinforced with a 160g/m² GLASS MESH strip (about 57 cm wide), followed by fine dusting with 0.10.5 mm. quartz sand.

    Detailed surface preparation
    1) Surface humidity content lower than 4%:

    • Before you pour MARMIX directly over it, make sure the underlayment is cohesive enough
    • Prepare MARMIX according to the instructions given further down on this card, and pour it onto the surface with the specially thick spatula supplied by NORD RESINE, without using a bubble bursting roller.

    2) Surface humidity content between 4 and 5 %:

    • Apply a coat of NORPHEN SW SOLID diluted with 1 part water; you will need approx. 100g/m² product
    • The day after, you can spread MARMIX over the surface.

    3) Surface humidity content higher than 5%:

    • Apply a coat of NORPHEN SW SOLID diluted with 2 parts water
    • Smooth over with NORPHEN W3 (amount needed: c.1.5 kg/m²)
    • Wait 48 hours at 20°C, then go ahead and pour MARMIX over.

    4) Industrial quartz concrete:

    • Shot blasting is the best way to prepare this type of surface for MARMIX application
    • On the now rougher surface you will be able to spread the product directly with no need for further preparation procedures.

    5) Section gaps

    Pay special attention to section gaps; this the procedure to follow:

    • a. industrial quartz floors up to 15 cm thick, less than 1 year old, with only one reinforcing mesh: fill up throroughly with NORPHEN FONDO SL, even repeating the operation a few times
    • b. floors as above, more than 18 cm thick and with two reinforcing meshes or else floors with only one reinforcing mesh and more than 1 year old: fill up the gap with extruded-expanded material and seal with NORPHEN FONDO SL, thickened with c. 3% SILICA (in weight).

    Preparing and laying the mix:

    pour MARMIX component A into a suitable container (a bucket will do), followed by component B, and mix to obtain a homogeneous mixture;

    transfer to a cement mixer suitable for thick and heavy mortars (e.g. a vertical one with fixed drum and moving blades); add MARMIX component C, mixing to obtain a homogeneous mixture with no dry lumps of powder;

    proceed immediately to pour and spread the mix.

    Use: the special NORD RESINE thick spatula designed for use with MARMIX (“MARMIX” spatula).

    Do not use: a bubble bursting roller to help spread the resin, as you may leave behind small lumps of resin and inert material.

    Working times

    MARMIX’s gel-time is long enough to allow for easy handling, provided the product is kept cool in summer and warm in winter.

    Marmix is available in a great number of colours; you can arrange your chosen one directly with Licata Greutol’s technical department. The final floor cost may vary according to the required colour.

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