How do you protect a concrete surface from aggressive materials , such as most acids , that can have a deteriorating effect on concrete . The first line of defense against chemical attack is to use quality concrete with maximum chamical resistance , followed by the application of protective treatments to keep corrosive substances from contacting the concrete .

Principle and practices that improve the chemical resistance of concrete include using a low water cement ratio , selecting suitable cement types ( such as sulfate-resistance cement to prevent sulfate attack ) , using suitable aggregates , water and air entrainment  . A large number of chemical formulatons are available as sealers and coatings to protect concrete from a variety of environments ; detailed recommendations should be requested from manufacturers , formulators or material suppliers  ..