Calcium hydroxide or lime is formed by the hydration reaction between portland cement and water.
Efflorescence on stained concrete floors.
These surfaces allow water to travel within the surface.
Efflorescence is actually a harmless crystallized mineral salt that has formed on your basement walls over time.
It is produced due to low temperatures moist conditions condensation rain dew and water added to the surface of fresh concrete to assist troweling.
Efflorescence is caused by vapor migrating through the slab bringing soluble salts to the surface of the concrete.
Concrete efflorescence has a habit of reappearing which means that you may need to repeat the cleaning process several days to several weeks after initially carrying it out.
The efflorescence can be happening when moisture starts to react with concrete causing some white stains in the concrete.
When moisture and water vapor migrate to the surface of hardened concrete floors walls and colored concrete it carries with it calcium hydroxide.
A general rule for cleaning efflorescence is to try gentle methods first before moving on to harsher techniques source.
It will generally look like a white powdery substance.
Efflorescence definition efflorescence is the white powdery substance on the surfaces of unsealed concrete and the white blush seen with sealed floors.
Acid cleaning may discolor stained concrete so test it on a small section first.
Efflorescence is normally worn off or washed away on unsealed concrete surfaces.
It s also commonly found on floors.
Efflorescence is caused when soluble salts and other water dispersible materials come to the surface of concrete and mortars.
The best approach would be to strip the sealer from a small area and perform a moisture test either a calcium chloride moisture test or an electronic surface moisture test so you can get an idea of how much moisture is in the slab.
In cases where moisture bubbles up from your basement floor it may even resemble a white foam on your floors.
Efflorescence is white powdery material formed on concrete floor surface when soluble salts migrate to the surface of concrete.
It has a white or greyish tint and consists of salt deposits left behind when water evaporates.
Efflorescence is a crystalline deposit of salts that can form when water is present in or on brick concrete stone stucco or other building surfaces.
Some surfaces and mostly stained concrete will be more susceptible to the reaction than others.
But really the best approach to dealing with efflorescence is to keep it from forming in the first place.
With any luck the efflorescence will stay away long term after enough cleanings have been performed.