Spalling
Spalling is the breaking, flaking, or chipping of concrete, brick, or masonry surfaces caused by moisture, corrosion, freeze-thaw cycles, or other deterioration.
What is Spalling?
Spalling is surface damage where pieces of concrete, brick, or masonry crack, chip, or break away from the main body of the material.
It is often a sign that moisture, corrosion, or internal pressure is damaging the structure from within.
Common Causes of Spalling
Freeze-Thaw Damage
Water enters the material, freezes, expands, and gradually breaks the surface apart.
Rebar Corrosion
When reinforcing steel rusts, it expands and pushes outward on the surrounding concrete.
Poor Concrete Quality
Weak mixes, poor curing, or finishing errors can make surfaces more vulnerable.
Why Spalling Matters
Reduces durability: Surface damage can expose deeper layers to more moisture and deterioration.
Signals bigger issues: Spalling may point to structural moisture or corrosion problems.
Affects appearance and safety: Loose material can create hazards and an unprofessional finish.
Common Mistakes
Only patching the surface: Cosmetic repair alone may fail if the root cause is not fixed.
Ignoring drainage problems: Water management issues often lead to recurring damage.
Waiting too long: Small spalling can become larger structural repair work over time.
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