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Mapelastic Smart Cementitious Membrane:  

Two-component, high-flexibility cementitious mortar (with crack-bridging capacity > 2 mm) applied by trowel or roller for waterproofing balconies, terraces, bathrooms and swimming pools     

WHERE TO USE

Mapelastic Smart is used to protect concrete structures, renders with hairline cracks and cementitious surfaces in general which, being subject to vibrations, may suffer from cracking, and for waterproofing hydraulic projects such as channels, faces of dams and swimming pools, basins, storage tanks, balconies and terraces. Particularly suitable for waterproofing irregular surfaces.     

Some application examples    

  • Waterproofing hydraulic channels, faces of dams and basins.
  • Waterproofing bathrooms, showers, balconies, terraces, swimming pools etc. before laying ceramic tiles.
  • Waterproofing plasterboard, render or cementitious surfaces, lightweight cement blocks and marine-grade plywood.
  • Flexible protection layer of new concrete structures or repaired structures subject to minor deformation under load.
  • Protection of cementitious renders or concrete with cracks due to shrinkage, minor movement caused by thermal gradients or dynamic stresses due to the passage of vehicles, against infiltration of water and aggressive elements from the atmosphere.
  • Protection of concrete pillars and beams and road and railway viaducts repaired with products from the Mapegrout or Planitop ranges against the penetration of carbon dioxide.
  • Protection of structures with an inadequate layer of concrete over the reinforcement rods against the penetration of aggressive elements.
  • Protection of concrete surfaces which may come into contact with sea water, de-icing salts, such as sodium or calcium chloride, and sulphates.  

ADVANTAGES    

  • High performance: a 2 mm thick film can cover cracks up to 2 mm wide.
  • Excellent mechanical characteristics thanks to the use of Mapetex Sel reinforcement.
  • CE-certified product in compliance with EN 1504-2 and EN 14891.
  • Excellent elongation at failure (120%).
  • Fluid consistency for easy application.
  • Resistant to UV rays.
  • May also be applied on existing coverings.
  • Compatible with ceramic, mosaic and natural stone coverings.  

TECHNICAL CHARACTERISTICS

Mapelastic Smart is a two-component mortar based on cementitious binders, fine-grained selected aggregates, special admixtures and synthetic polymers in water dispersion, blended according to a formula developed in MAPEI's own research laboratories. When the two components are mixed, a blend with a plastic consistency is obtained. It may be applied by brush, by roller or by spraying with a worm screw rendering machine on both horizontal and vertical surfaces at a thickness of approximately 2 mm. Due to the content and high quality of the synthetic resins, the hardened layer of Mapelastic Smart remains constantly flexible under all environmental conditions. Mapelastic Smart is waterproof and resistant to the penetration of aggressive substances which are present in the atmosphere, such as carbon dioxide, sulphur dioxide and sulphuric anhydride, and soluble salts such as chlorides and sulphates, which are present in seawater or in the ground. Mapelastic Smart has excellent bonding properties on all cementitious, ceramic and marble surfaces as long as they are sound and sufficiently clean. These properties, together with its resistance to the deteriorating effect of UV rays, a characteristic of this product, ensure that structures protected and waterproofed with Mapelastic Smart have a long service life, even if they are located in areas with particularly rigid climatic conditions, in coastal areas with a saline-rich atmosphere or in industrial areas where the air is particularly polluted. Mapelastic Smart meets the requirements defined by EN 1504-9 ("Products and systems for the protection and repair of concrete structures - Definitions, requirements, quality control and evaluation of conformity - General principles for the use of products and systems") and the requirements claimed by EN 1504-2 coating (C) according to the PI, MC and IR principles ("Protection systems for concrete surfaces").     

RECOMMENDATIONS         

  • Do not apply Mapelastic Smart at temperatures lower than +8oC.
  • Do not add cement, aggregates or water to Mapelastic Smart.
  • Protect from rain and water spillages for the first 24 hours after application.
  • Do not leave Mapelastic Smart exposed in swimming pools.  

APPLICATION PROCEDURE Preparation of the substrate

A) Protection and waterproofing of concrete structures and elements (eg. pillars and beams for road and railway viaducts, cooling towers, chimneys, underpasses, retaining walls, applications in coastal areas, basins, channels, faces of dams, columns, faces of balconies, skirt roofs, etc.). The surface to be treated must be sound and perfectly clean. Remove all cement laitance, flaky parts and traces of powder, grease, oil and removing compounds by sand-blasting or washing down with high-pressure water. If the structure to be waterproofed and protected with Mapelastic Smart is in a poor condition, remove the damaged parts by hand or mechanical means, or by using a water jet blasting which uses high pressure water and is particularly recommended, because the reinforcement rods are not damaged and the structures are not subject to vibration which could cause hairline cracks to form in adjacent concrete Once the rust has been completely removed by sandblasting, carry out the repair with a ready-mixed mortar from the Mapegrout or Planitop range. Absorbent surfaces to be treated with Mapelastic Smart must be slightly dampened beforehand with water.     

B) Waterproofing of terraces, balconies and swimming pools

CEMENTITIOUS SCREEDS:  settlement cracks caused by plastic or hygrometric shrinkage must be sealed beforehand with Eporip;  if thicknesses of up to 20 mm have to be levelled out (to create slopes, fill out dips, etc.) use Adesilex P4 or Planitop Fast 330.

EXISTING FLOORS:  existing floors and coverings in ceramic, gres, klinker or terracotta etc. must be well bonded to the substrate and free from substances which could compromise the quality of the bond, such as grease, oil, wax, paint, etc.     

To remove all traces of material that could affect the adhesion of Mapelastic Smart, clean existing floors with a mixture of water and 30% caustic soda and thoroughly rinse the floor with water to eliminate all traces of caustic soda.     

RENDERS: new, cementitious-based renders or limecement renders must be well cured (in good weather, we recommend at least 7 days per mm of thickness applied), bonded to the substrate, resistant and free of powder or all kinds of paint;  dampen absorbent surfaces to be treated beforehand with water. Close up of the waterproofing layer In the waterproofing sector, more than in any other sector, it is essential that particular attention is paid to details. Mapeband TPE, Mapeband and other special accessories are indispensable and a determining factor. Mapeband TPE is used to seal structural joints and joints subject to high dynamic stress, Mapeband is used to waterproof construction joints, joints between horizontal and vertical elements and special kits from the Drain range are used to seal drain holes. It is absolutely imperative that special care is taken in these critical areas after levelling out and cleaning the substrate before applying the cementitious waterproofing mortar. Preparation of the mortar Pour component B (liquid) into a suitable, clean container. Then slowly add component A (powder) while stirring with a mechanical mixer. Carefully mix Mapelastic Smart for a few minutes, making sure that no powder remains stuck to the sides or the bottom of the container. Keep stirring until a perfectly homogenous mix is obtained.     

Use a low-speed mechanical mixer for this operation to avoid too much air entering the mix. Do not prepare the mix by hand. Preparation of Mapelastic Smart may also be carried out with a mortar mixer, which is usually supplied with mortar sprayers. If this technique is used, make sure that the mix is homogenous and has no lumps before it is poured into the hopper of the pump.     

Manual application of the mortar Mapelastic Smart must be applied in at least two coats by trowel or with a roller within 60 minutes of it being mixed, to give a final thickness of at least 2 mm. When used for waterproofing terraces, balconies, basins and swimming pools, and for protecting substrates which have hairline cracks or elements which are particularly stressed, we recommend to embed Mapenet 150 alkali-resistant glass fibre mesh in the first layer of fresh Mapelastic Smart, to act as a reinforcement. After the mesh has been laid, finish the surface with a flat trowel and apply a second layer of Mapelastic Smart when the first one has set (after 4-5 hours). To further improve elongation at failure and crack-bridging of Mapelastic Smart on horizontal surfaces, we recommend inserting Mapetex Sel non-woven macro-holed polypropylene fabric. The first layer of Mapelastic Smart must be at least 1 mm thick. While it is still fresh, carefully lay Mapetex Sel on the surface, and press it in using a flat-bladed trowel to make sure that it is perfectly buttered. Then apply the second coat of Mapelastic Smart to completely cover the fabric, and smooth over the surface using a flat-bladed trowel. After applying Mapelastic Smart, wait at least 5 days for curing before laying ceramic tiles. This waiting time can be longer in cold climatic conditions. In good weather and at normal temperatures, on the other hand, this time may be reduced to 24 hours for dry substrates.     

Laying ceramic tiles on Mapelastic Smart     

BALCONIES AND TERRACES:    

  • Bond in place with a C2 class cementitious adhesive such as Keraflex or Keraflex Maxi S1 or, for more rapid interventions, a C2F class adhesive such as Granirapid or Ultralite S1 Quick;
  • Grout all joints with a CG2 class cementitious product such as Keracolor FF or Keracolor GG mixed with Fugolastic or Ultracolor Plus;
  • Seal all expansion joints with a specific MAPEI flexible sealant (such as Mapeflex PU45, Mapeflex AC or Mapesil LM. Other types of sealant may be recommended, depending on specific service conditions. Please contact MAPEI Technical Services Department).      

SWIMMING POOLS:    

  • Bond ceramic tiles with a C2 class cementitious adhesive (Keraflex or Keraflex Maxi S1) or a C2F class rapid adhesive (Granirapid or Ultralite S1 Quick). For mosaic use Adesilex P10+Isolastic mixed with 50% water (class C2TE);
  • Grout all joints with a CG2 class cementitious product (Keracolor FF/ Keracolor GG mixed with Fugolastic or Ultracolor Plus) or with an RG class epoxy product (from the Kerapoxy range);
  • Seal all joints with Mapesil AC silicone sealant.  

Application of the mortar by spraying After preparing the surface (refer to "Preparation of the substrate"section) spray on at least two layers of Mapelastic Smart at a thickness of at least 1 mm per layer with a rendering machine fitted with a spraying lance for smoothing and levelling compound in order to form a final layer at least 2 mm thick. Successive coats must only be applied when the previous one is dry (after 4-5 hours). In areas with hairline cracks or which are highly stressed, insertion of Mapenet 150 in the first layer of fresh Mapelastic Smart is recommended. Immediately after laying the mesh, Mapelastic Smart must be smoothed with a flat trowel. To ensure the mesh is totally encapsulated, a further layer of Mapelastic Smart may be applied with a spray gun. To further improve elongation at failure and crack-bridging of Mapelastic Smart on horizontal surfaces, we recommend inserting Mapetex Sel non-woven macro-holed polypropylene fabric. The first layer of Mapelastic Smart must be at least 1 mm thick. While it is still fresh, carefully lay the Mapetex Sel on the surface, and press it in using a flat-bladed trowel to make sure that it is perfectly buttered. Then apply the second coat of Mapelastic Smart to completely cover the fabric, and smooth over the surface using a flat-bladed trowel. If Mapelastic Smart is used, for protecting bridge piles and beams, railway underpasses or facades on buildings etc., the product may be painted over using products from the Elastocolor range, acrylic resin-based paint in water dispersion available in a wide array of colours obtained using the ColorMap automatic colouring system. If Mapelastic Smart is used for protecting horizontal concrete surfaces not for pedestrian use such as on flat roofs, the product may be painted over with Elastocolor Waterproof flexible acrylic resin-based paint in water dispersion. Elastocolor Waterproof is available in a wide range of colours obtained using the ColorMap automatic colouring system and must be applied at least 20 days after applying Mapelastic Smart.     

PRECAUTIONS TO BE TAKEN DURING AND AFTER APPLICATION     

No special precautions need to be taken when the temperature is around +20oC.  During hot weather, it is advisable to keep the product out of direct sunlight before use (powder and liquid).  After application, and in particularly dry, hot or windy weather, we recommend that the surface is protected from rapid evaporation with sheets.     

Cleaning Due to the high bonding strength of Mapelastic Smart, even on metals, we recommend that work tools are washed with water before the mortar sets. Once it has set, cleaning may only be carried out by mechanical means.     

CONSUMPTION Application by trowel or roller: Approx. 1.6 kg/m2 per mm of thickness. Spray gun application: Approx. 2.2 kg/m2 per mm of thickness. N.B.: the consumption figures indicated are for a seamless film on a flat surface and are higher if applied on uneven substrates. PACKAGING Units of 30 kg: component A: 20 kg bags; component B: 10 kg drums. STORAGE Mapelastic Smart component A may be stored for up to 12 months when contained in its original sealed packaging in a dry place. The product complies with the conditions of Annex XVII to Regulation (EC) N 1907/2006 (REACH), item 47.     

Mapelastic Smart component B may be stored for up to 24 months. Store Mapelastic Smart in a dry place and at a temperature of at least +5oC.     

SAFETY INSTRUCTIONS FOR PREPARATION AND APPLICATION Mapelastic Smart component A contains cement that when in contact with sweat or other body fluids causes irritant alkaline reaction and allergic reactions to those predisposed. It can cause damage to eyes. In case of contact with the eyes or skin wash immediately with plenty of water and seek medical attention. Mapelastic Smart component B is not considered hazardous according to current standards and regulations regarding the classification of mixtures. It is however recommended to use gloves, eye protection and to take the usual precaution when handling chemical products. For further and complete information about the safe use of our product please refer to the latest version of our Material Safety Data Sheet. PRODUCT FOR PROFESSIONAL USE.     

 

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