With environmental regulations being placed on coal burning facilities, they are shutting
down or converting to natural gas. In both cases, coal slag and fly ash are becoming harder to
find. Both the quantity and quality have diminished. Silica Fume is another pozzolanic material
commonly used in concrete. Silica Fume has a large surface area which requires more water as

well as a plasticizer to be added to the concrete mix. Glass pozzolan is a sustainable, cleaner, and

more environmentally friendly replacement to the current options in the market today as it is all 100%

recycled material