Abstract: The activity of ceramic polishing powder was tested and evaluated by activity test. Taking ceramic polishing powder as supplementary cementing materials for concrete， the effects of the ceramic polishing powder on concrete compressive strength was studied. It is showed that the ceramic polishing powder possesses reaction activity， it can interact with Ca(OH)2， i. e.， secondary hydration reaction. The development trend of compressive strength of ceramic polishing powder concrete with age is similar to that of plain concrete. The concrete compressive strength at different ages declines with increasing mass fraction of cement replaced with ceramic polishing powder. If the mass fraction of replacement is not more than 30%， the strength grade of concrete can be at the level of C30 or C40. Finally， with the same mass fraction of replacement， the compressive strength of ceramic polishing powder concrete approximates to fly ash concrete at different ages.

Key words: ceramic polishing powder, activity evaluation, secondary hydration reaction, concrete, compressive strength