To provide a cement composition excellent in sulfuric acid resistance, strength development, etc., and to provide a method for repairing a concrete structure therewith.

Provided is a sulfuric acid-resistant cement composition comprising cement, a water-soluble, organic, metal sulfonate-substituted compound and an inorganic alkali metal sulfate. It is desirable that 0.5-10 pts.mass water-soluble, organic, alkali metal sulfonate-substituted compound is present per 100 pts.mass cement. It is desirable that the cement composition further contains one or more inorganic powders selected from among silica fume, slag, and fly ash. Also provided are a method for repairing a concrete structure with the sulfuric acid-resistant cement composition and a secondary concrete product lined with the sulfuric acid-resistant cement composition.

COPYRIGHT: (C)2008,JPO&INPIT