Abstract：
The main contains of clay ceramsite is quartz by X-ray analysis. The grade of grains, the bulk unit weight, the specific gravity, the void ratio and the water-absorption of clay ceramisite have been measured. The mix-ratio of clay ceramisite porous concrete has been designed. The compressive strength of the porous concretes is bigger than 5MPa after curing 28 days, and its porosity is almost bigger than 25%. With the increasing of water-cement ratio, and the decreasing of cement dosage, the porosity of the clay ceramisite porous concrete decreased, and its compressive strength increased. For the clay ceramisite porous concrete, the appropriate cement dosage is 250kg/m3.
