Experimental study on preparation of unburned brick with ecological sinter
Unburned bricks were prepared with ecological sinter as the main raw material by pressing forming method.The ef-fects of forming pressure and raw material ratio on the compressive strength of the unburned bricks were studied in the laboratory,and the industrialization experiment of unburned bricks preparation was carried out.The results showed that the 7 d and 28 d com-pressive strength of the unburned bricks under the condition that the forming pressure 20 MPa and the mass ratio of ecological sin-ter,cement,slag and waste brick 45∶15∶15∶25 can reach 12.98 MPa and 16.04 MPa respectively.Under the optimized raw material ra-tio,all the performance indexes of the unburned bricks prepared by the enlarged industrial test meet the MU15 grade requirements of JC/T 422-2007"Non-fired rubbish gangue brick",and the surface of the samples have no bump,crack,damage and stratification.The microscopic analysis shows that the gel material is interwoven with the mineral and other substances in the ecological sinter,and the particles in the rubber material system are tightly wrapped at the same time,forming a dense network structure,which is the main reason for the high compressive strength of the unburned brick.
万方数据
维普
