Abstract:Based on the physical and chemical properties of sludge and construction waste

construction rubbish

sludge or river sediment were used as base stock to prepare a well kind of waterproof insulated high strength and lightweight foaming ceramic plate

and the effects of firing condition

solid phrase including aggregate and glass fragment

animal foaming agent

bentonite on the foaming tendency and properties such as water absorption rate

porosity

density and compressive strength were explored. The results showed that under the optimal formula and firing conditions including the combined aggregate of construction waste and sludge of 70%

glass fragments of 20%

animal protein foaming agent of 5%~7%

bentonite of 5%~7%

and under preheating temperature of 700 ℃

preheating time of 40 min

sintering temperature of 1 200 ℃

sintering time of 30 min

the best foaming ceramic property was obtained such as the water absorption rate of 1.62%

porosity of 70.12%

the compressive strength of 5.12 MPa

the bulk density of 0.48 g/cm3. The product performance is better than the relevant national standards.