Water-proofing admixture

STONE MH Plus is a modified silane-based admixture. Containing virtually no volatile elements, it has been developed for the mass water-proofing of concrete. STONE MH Plus is designed as an additive for use with green concrete. The water- repellent effect develops as the concrete sets. STONE MH Plus reacts with the contact surfaces of the pores and capillaries of the mineral-based material to form an invisible, water-repellent surface, thereby creating an effective droplet- forming effect. The preservation of the material’s high level of water-vapour permeability means that the concrete is still able to “breathe” effectively. The high proportion of active ingredients in STONE MH Plus helps it considerably to reduce the appearance of efflorescence, while preventing damage due to frost and acid rain. Other positive benefits provided by this product include a drastic reduction in water absorption and high resistance to alkaline-based substances. Thanks to a low dosage rate, 0.5% to 1.5% with respect to the concrete mixture as a whole, a high level of cost-efficiency is achieved. The addition of STONE MH Plus provides the surface layer with excellent water-repellent properties. The amount added is low with respect to conventional products, making it easy to handle.

Product characteristics
  • strong hydrophobing effect
  • high water vapour permeability
  • reduces the occurrence of efflorescence
  • high alkali resistance
  • low dosage