Abstract: Glass powder with different particle size distributions were tested by laser particle analysis. Influence of the particle size distribution of glass powder on properties of complex binder were investigated by using GIA and SEM. The result show that the particles ranging?10 μm has the positive effect on the strength development of complex binder, the particles ranging from 5 to 10 μm has the maximum positive degree of grey incidence. Those with size lager than 45 μm correlated with the properties of complex binder negatively, contributed less to the strength development of complex binder. Glass powder can be more dispersed to porosity of complex binder when glass powder were prepared by physical milling ( 35 min) , the structure of complex binder is more dense, and the compressive strength of complex binder is improved.

Key words: glass powder;particle size distribution;grey incidence analysis;microstructure