Synthetic silica glass in non-portland cements

Abstract

A cement composition can include water and a blended cement. The cement composition can be free of Portland cement. The blended cement can include cement and a supplementary cementitious material. The cement can be calcium aluminate cement or calcium aluminophosphate cement. Fly ash is a common supplementary cementitious material containing silica. However, fly ash can have large variances depending on the source of the fly ash. Instead of fly ash, the supplementary cementitious material can be ground synthetic glass, such as soda-lime glass, which has consistent properties regardless of the source.

Dependencies are inferred from the claim text.