What are the factors causing Disintegration of Concrete? — XFACTORY.IN

Concrete has long been known as a reliable construction material, but deficiencies in material selection, detailing, and design can affect the service life of concrete. Disintegration of concrete structures can become a challenge for the owners of these structures.

Temperature Change

Disintegration is the physical deterioration (such as scaling) or breaking down of the concrete into small fragments or particles. It usually starts in the form of scaling, which is Scaling is referred to the loss of the surface portion of concrete (or mortar) as a result of the freezing and thawing.

Sulphate Attack

Soluble sulphates react with Tricalcium Aluminate of **cement** I n the presence of moisture and form products which occupy much bigger volume than that of original constituents and so expansive reaction results causing disintegration and weakening of concrete, masonry, plaster, and formation of cracks. The reaction is very slow and cracks start coming to notice after 2 to 3 years.

Carbonation Attack

When **concrete** hardens due to hydration of cement, some calcium hydroxide is liberated which sets up a protective alkaline medium inhibiting galvanic cell action and preventing corrosion of steel. In course of time, free hydroxide in concrete reacts with atmospheric carbon dioxide forming calcium carbonate, resulting in shrinkage cracks.

These are the most common factors that cause the disintegration of concrete resulting in cracks.

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