Urban Mining Industries is launching the first full-scale commercial processing plant for Pozzotive, a concrete-grade pozzolan derived from post-consumer waste glass. The newly opened charter facility in Beacon Falls, Conn., is equipped for 50,000-plus tons of annual output.
“Bringing this innovation to Connecticut creates a perfect circular economy: we harvest and process 100 percent of our recycled glass, and use it in local, sustainable building projects, while also reducing transportation emissions and costly landfill space,” says Pozzotive inventor and principal Louis Grasso. In the ramp up to commercialization, he adds, Pozzotive ground glass pozzolan has been successfully used in mix designs for over 10 million concrete masonry units, 750,000 square feet of concrete pavers, and 500,000 square feet of prestressed plank.
By replacing up to 50 percent of carbon dioxide-intensive cement, Pozzotive reduces embodied carbon on a ton-for-ton basis and yields a high-performing product that increases the resistance of concrete slabs and structures to chloride penetration, sulfate attack, efflorescence and freeze thaw cycles. This means longer lasting concrete that reduces replacement cost while lowering a project’s upfront carbon footprint.
Differentiating Pozzotive from other ground glass pozzolans, Urban Mining notes, are its optimal and reliable particle size and a clean, consistent chemical composition. Particle size plays a huge role in the pozzolanic reaction that imparts strength and durability to high performance concrete. “Our years of testing and use have refined the manufacturing process for Pozzotive to tightly control the range of particle sizes to maximize the efficiency of its pozzolanic reaction,” Grasso observes.
With this sustainable innovation, Urban Mining is also leading the charge in reducing the amount of recycled glass that goes to expensive and overburdened landfills with its patented process for sorting, cleaning and milling waste glass regardless of color, size, presence of ceramics or cleanliness. Better performing, longer lasting concrete, lowering CO2 emissions and transforming the recycling industry add up to what company officials call a “win-win-win.” — Urban Mining Industries, New Rochelle, N.Y., www.pozzotive.com