Research on preparation of silicate autoclaved brick with architectural ceramic waste residue
DING Qi
YANG Zanzhong
LIU Min
ZHAO Tiantian
WU Qiyang
ZHOU Xuexia
Abstract：Silicate autoclaved brick was prepared by using architectural ceramic waste residue as raw materials.The effects of aggregate and lime content,forming pressure and forming water content on the properties of the products were discussed.The mixing ratio of raw materials was determined by orthogonal experiment.And the strength of the products forming mechanism was studied by XRD,SEM and EDS.It was shown that material ratio,forming water content and forming pressure had a certain impact on the performance of products.The samples were prepared by compounding materials in accordance with the mass ratio of ceramic waste residue∶lime∶aggregate∶seed crystal∶water glass=50∶15∶33∶2∶0.5,adding water 18％ and under 25 MPa pressure forming,and by autoclaving under hydrothermal conditions with steam pressure 1.2 MPa for 6 h.The compressive strength of autoclaved brick was 44.5 MPa.The hydrothermal reaction between SiO2 and CaO in the raw materials produces hydrates such as tobermorite,CSH(B)and C-S-H gel,coated on the surface of the solid particles and/or filled in between the particles,interweaving to form a solid cemented body,thus forming the overall strength of the material.
Keywords：ceramic waste residueautoclaved brickorthogonal experimentaggregateforming pressureforming water content
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 39-43 )