Abstract: Strength grade C30 of recycled aggregate that was one of effective methods to dispose waste solid was fabricated with Ca series expanding agent, and blast furnace slag cement and low absorption recycled aggregate used to restrain alkali-aggregate reaction.The durable experiment shows that the strength and durability compared ordinary concrete with recycled aggregate concrete both display the same properties and Ca series expanding agent, blast furnace slag cement, and small water absorption play a good effect on durability of recycled aggregate concrete.

Key words: solid waste%recycled aggregate%durability