Abstract: The misfired properties of each kind of aggregates are testified and the dolomite and limestone aggregates are chosen to make misfired concrete. The influences of different aggregates on the workability and strength of cement mortar and concrete are investigated. The results show that the misfired aggregates provide higher fluidity of cement mortar. The low strength concrete with dolomite has lower early strength and higher long-term strength. The low strength concrete with limestone has higher early strength and higher long-term strength.