Cracking or Spalling
Crumbling or Spalling of Concrete Walls
Crumbling or spalling of the concrete walls in your home can have various causes such as outdoor temperature, soil pressure, concrete quality, manufacturing defects, and chemical or mechanical attacks.
Possible causes
Temperature and pressure
In Quebec, temperature fluctuations are very significant. Concrete blocks can spall due to freezing and thawing cycles, especially if the hollow parts have not been filled with concrete. They can also be damaged by tree roots. Finally, soil pressure can also cause the breaking or crushing of concrete block foundations.
Chemical and mechanical attacks
If your foundation’s concrete contains pyrite, it will chemically react with water, causing cracks and crumbling in the concrete. In cases of pyrite-related issues, the concrete must be completely replaced.
Water, wind, and frost can lead to the gradual deterioration of concrete. High concentrations of de-icing salt can also attack the concrete. The metal reinforcements in reinforced concrete may also be affected by corrosion.
Concrete quality and errors during pouring
Since the 1950s, concrete manufacturing in Quebec has been highly regulated and controlled. Factory-made concrete has a lifespan of over 150 years. However, prior to this period, manufacturing techniques were much more artisanal.
If your house is old, it is possible that the concrete mix was made on-site and was improperly balanced. It is also possible that the concrete pouring was poorly executed: too much delay before pouring, drying too slowly or too quickly, pouring at too low a temperature, exposure to frost during drying, use of concrete made without sufficient compressive strength, or subjected to excessive vibrations during placement.
THE GOUDRONS DU QUÉBEC SOLUTION
Our solutions for crumbling or spalling concrete walls
Worried about a problem with your foundation?
Our team will identify the cause of the crumbling or spalling of the concrete in your home and offer the best long-term solution to resolve the issue. Contact us to receive support from our specialists.
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