Discover the Secrete of Concrete Durability
Can your concrete structure resist weathering action (water penetrations), chemical attack, and abrasion?
The secrete of concrete durability is quality. A durable concrete will guarantee the achievement of structures with long life. In other words, it can last longer and withstand the environmental attacks without significant defects on the performance of the structures.
According to the American Concrete Institute (ACI), the durability is defined as "the ability of concrete to resist weathering action, chemical attack, and abrasion while maintaining its desired engineering properties".
Increase in the service life of a structure depends on the quality of the material selection, mix design method, production, placement, finishing and curing of concrete. Moreover, concretes serve in different exposure conditions would require different durability requirements.
The most important degradation mechanisms in concrete structures are:
Freeze-thaw damage (physical effects, weathering)
Alkali-aggregate reactions (chemical effects)
Sulfate attack (chemical effects)
Corrosion of reinforcing steel embedded in concrete (chemical effects)
Carbonation of concrete
Abrasion (physical effects)
Mechanical loads (physical effects)
Microbiological induced attack (chemical effects)
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