The effect of wet-grinding on the properties of glass powder and its application in cement based materials

Abstract

To improve the pozzolanic reactivity, waste glass (WG) needs to be micronized to fine particles so as to expedite the leaching of active constituent. The key feature of this work is to examine the effect of wet-grinded WG on the mechanical and structural properties of cement based materials. The experimental results show that wet-grinding can improve the ions leaching behavior of WGP and decrease the stability of silicon oxide bond. The pozzolanic reactivity of WGP was dramatically enhanced after wet-grinding, as high as 144.1% at 1 d and 110.9% at 28 d when the mean grain size of WGP reached 0.90 µm. The ground WGP can promote the transformation of capillary pores to gel pores to improve the compactness of microstructure regardless of the reaction time.