Resistance to chemicals
A range of solvent-free resin-based coatings is available from Weber to protect concrete from chemical attack. In some instances impregnation of the concrete with an acrylic or silane sealer may help to reduce the ingress of chloride ions.
BS EN 1504-9:2006
BS EN 1504 Principle 6 is concerned with increasing the resistance of the concrete surface to wear, erosion and impact damage. Where concrete has been attacked by chemicals the nature of the attack and the chemicals need to be identified and protective measures taken to reduce their effects and apply the repair methods. Soils, water treatment works and sewage can generate acids or sulphates that can promote attack on the concrete and reinforcement.
BS EN 1504-2 and BS EN 1504-3
BS EN 1504-2: Surface protection systems for concrete
BS EN 1504-3: Structural and non-structural repair
Methods of protection based upon the BS EN 1504 Principle 6 is the use of the following:
- 6.1 Overlays or coatings.
- 6.2 Impregnation.