##  [Sulfate Attack](/sulfate-attack) 

  ##  [Sulfate Attack](https://engineering.quantumdictionary.io/sulfate-attack-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

Chemical deterioration of cementitious materials caused by ingress of sulfate ions that react with cement hydration products to form secondary, often expansive minerals (e.g., ettringite, gypsum), producing softening, internal expansion, cracking, loss of stiffness and compressive strength, and increased permeability.