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Mapelastic Guard
Description

A two-component, flexible cementitious mortar for protecting large concrete structures subject to high stress.

Residual GreenHouse Gas emissions measured throughout the life cycle of this product using Life Cycle Assessment (LCA) methodology, verified and certified with EPDs, have been offset for the year 2026 through the acquisition of carbon credits in support of forestry protection projects.

Key Features
  • Mapelastic Guard is a two-component, flexible, light grey mortar made from cementitious binders, fine grained selected aggregates, special additives and synthetic polymers in water dispersion according to a formula developed in the MAPEI Research & Development Laboratories.
  • When the two components are mixed together, a free-flowing mix is obtained which may be applied at thicknesses up to 2mm, including on vertical surfaces.
  • Thanks to its high content of quality synthetic resins, the hardened layer of Mapelastic Guard Zero maintains its flexibility under all environmental conditions, and is totally impermeable to water at pressures up to 1.5 atmospheres and the penetration of de-icing salts, sulphates, chlorides and carbon dioxide.
  • Mapelastic Guard also has excellent adhesion on all concrete surfaces, provided that they are sound and sufficiently clean.
  • These properties, together with its excellent resistance to UV rays, ensures that structures protected with Mapelastic Guard are durable, even when located in areas with particularly cold climatic conditions, in coastal areas with a saline-rich atmosphere or in industrial areas where the air is highly polluted.
  • Mapelastic Guard complies with the principles in 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 minimum requirements of EN 1504-2 coating (C) according to principles PI, MC and IR (“Surface protection systems for concrete”).
Scope of Use

Protecting concrete structures against aggressive atmospheric agents.

Some application examples:

  • Protection for structures with insufficient concrete cover around steel reinforcement.
  • Protecting concrete piles and decks on road and railway viaducts from carbon dioxide penetration.
  • Protecting concrete surfaces that come into contact with seawater, de-icing salts such as sodium chloride and calcium and sulphate salts.
  • Protecting concrete with cracks caused by shrinkage to block the penetration of water and aggressive agents present in the atmosphere.
  • Flexible skimming layers on concrete structures with thin sections, including those subject to small deformations when under load (for example prefabricated elements).
Limitations on Use
  • Do not use Mapelastic Guard for thick coatings.
  • Do not apply Mapelastic Guard at temperatures below +8°C.
  • Do not add cement, aggregates or water to Mapelastic Guard.
  • Protect from rain and accidental spillages of water for the first 24 hours after application.
Other Performance Attributes
  • Residual GreenHouse Gas emissions measured throughout the life cycle of this product using Life Cycle Assessment (LCA) methodology, verified and certified with EPDs, have been offset for the year 2026 through the acquisition of carbon credits in support of forestry protection projects.
Documents
Safety Data Sheet Mapelastic Guard A

Version 1 (2025)

Safety Data Sheet Mapelastic Guard B

Version 1 (2025)

Technical Data Sheet Mapelastic Guard
EPD Mapelastic Guard
HPD Mapelastic Guard

Mapei have over 80 years of experience, with innovative quality adhesives, sealants and chemical products and systems for the building industry.

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