ENREast —As the sustainability movement took hold in construction a quarter-century ago, concrete maker Louis P. Grasso Jr. was nudged by its leaders to gain a competitive edge by producing a pozzolan made from locally sourced recycled glass to reduce cement’s carbon content. Soda-lime glass, typically used in bottles, consistently contains at least 71% silica dioxide, "which immediately signaled its potential as a high-quality pozzolan," he says. That generated his development of the trademarked additive Pozzotive, now in its largest application yet—in 52,000 cu yd of concrete used to build floors in the more than $3-billion JPMorgan Chase high-rise in Manhattan, which opened last year.

ConcreteProducts.com —Urban Mining Industries recently completed deliveries for the largest project to date incorporating its Pozzotive Ground Glass Pozzolan: 270 Park Avenue, a 1,388-ft. tower housing the JPMorganChase global headquarters in New York City. Urban Mining processed the binding agent from post-consumer waste glass feedstocks at its Beacon Falls, Conn. facility, dispatching loads to the SRM Concrete ready mixed plant in Long Island City. New York-based Severud Associates, Consulting Engineering P.C. approved Pozzotive-rich mix designs for concrete on metal deck, shear wall and other structural conditions throughout the 60-story building.

Urban Mining Industries —The funding, from the Department of Energy’s Office of Manufacturing and Energy Supply Chains (MESC), will advance the development of two manufacturing plants in FL and MD to produce a high performance, low-carbon cement replacement while expanding economic opportunities for both of these former coal communities. Urban Mining Industries was selected by the U.S. Department […]

KHL Construction Briefing —Still the second-most-used substance behind water, global concrete consumption is showing no signs of falling. However, as Mitchell Keller reports, the material isn’t what it once was, as the industry races to create more sustainable products.