What Is Efflorescence And How To Reduce It?
You create your “Dream House” from your hard earned money, and invest time, energy, money and that extra effort to live in a palace which is unique and distinctive. You innovate by selecting the best quality raw materials during the construction and hire the best professionals for the job.
Still, after a year or may be immediately after you have shifted, you find white patches or deposits on the colourful concrete or the surface of the masonry. It is painful and maddening. However, you must understand what this actually is?
Efflorescence and Causes
The discolouration or the white stains on the concrete are crystalline salt deposits of calcium, sodium and potassium hydroxide and is termed as – Efflorescence. Though they are harmless, they can also be the deposits of carbonates and sulfates of calcium and magnesium. They are water soluble and easy to wash with clean water. It is very unpleasant, though, when you find them on your integral-coloured concrete.
The general reason behind the efflorescence is the excess water in the concrete which mixes with calcium hydroxide of concrete (water soluble) and through the capillary of concrete; travels to the surface. CH then reacts with the atmospheric carbon dioxide and forms the white crystals. The crystallization takes speed during wet and cool conditions followed by the spells of dry and warm conditions.
Efflorescence Treatment Melbourne
You must follow the following methods to prevent this phenomenon from happening:
Water repelling sealant
Use hydrophobic sealant in the building materials. This prevents water absorption in the surface. This will block the movement of water from within to the surface.
Use of polyethylene sheets
Fixing of capillary barriers like polyethylene sheets in the building materials and soil will reduce the chances of water and salts mixing.
Reduce water flow
Cracks in the wall lead to the flow of concrete and water from the joints calls for salt deposition, hence avoid them. The proactive approach of using effective water stops and water drainage systems will not allow water to pond.
Try to lower the water-cement ratio so that the water content in the concrete does not exceed, thus reducing the chances of water through the pores to move towards the surface.
Mixing soluble salts
Always check and treat water before mixing cement or sand or mortar. Water used for mixing is normally taken for granted. Thus, the chances of water-soluble alkali sulfates getting mixed with concrete increases. Clean and salt-free water and clean sand should be used to reduce the potential of efflorescence.
Storage in water-free conditions
Store your masonry materials in a water-free area or which is above ground levels. Preferably cover them to prevent water precipitation.
Small, easy precautionary measures taken by you can keep you happy and contented forever. There is nothing technical in understanding the annoying Efflorescence Treatment Melbourne and getting rid of it once and for all. However, if nothing seems to work out, it is always better to take help of professionals who will conduct a systematic efflorescence treatment in Melbourne.