A new concrete manufacturing technique extracts carbon dioxide out of the air, or directly out of industrial exhaust pipes, and turns it into synthetic limestone.
With cement manufacturing responsible for 4% to 8% of the world’s carbon dioxide emissions, this breakthrough could be a significant development in the effort to reduce greenhouse gas. Consider that the pace of construction worldwide has been robust, particularly in China, in recent years. And, cement production worldwide could grow 23% by 2050.
Portland cement is made with limestone that is quarried and then heated to high temperatures, an energy-intensive process that releases huge amounts of carbon dioxide. The new technique, which has already been demonstrated in California, could not only slow the advance of climate change, but actually help to reverse it.
The inventor was inspired by how coral transform minerals in seawater to a shell-like substance. The “low-energy mineralization” technique he developed turns captured CO2 into calcium carbonate, the material synthesized by coral.
Related Stories
| Sep 20, 2012
AGC awarded federal grant to provide fall-protection safety program
The Associated General Contractors of America will continue to provide fall protection safety training next year after being awarded a federal safety grant.
| Sep 20, 2012
East Lansing officials accused of ignoring unauthorized project that led to partial building collapse
The unauthorized construction of a fifth-floor penthouse on a downtown East Lansing, Mich. mixed-use development led to a partial building collapse earlier this year.
| Sep 20, 2012
Reflective roofs could reduce rainfall in Arizona
Green standards may have to take into account the impact of reflective roofs on rainfall in the desert Southwest.
| Sep 20, 2012
Earth Advantage Institute offers green certification for small commercial buildings
Earth Advantage Institute announced a new green building certification aimed at new or substantially remodeled small commercial buildings built to green standards.
| Sep 14, 2012
To create more pedestrian-friendly neighborhoods, Chicago unveils safety plan
As more urban mixed-use and residential developments aim to encourage residents to walk and use mass transit, cities are addressing pedestrian safety.
| Sep 14, 2012
Worker killed in Brooklyn building collapse; overloaded floor decking blamed
One worker was killed after he and others plunged 40 feet through an unfinished upscale Brooklyn townhouse building.
| Sep 14, 2012
NRCA University offers photovoltaic class
NRCA University will offer a class called “Photovoltaic Roof Systems: Energizing Your Business” Oct. 16 in Philadelphia.
| Sep 14, 2012
Costa Rica’s strict building codes prevent major damage in powerful quake
The relatively little damage from a 7.6 earthquake was due in large part to strict building codes in Costa Rica, a country that has long enjoyed more stability, better governance, and stronger economic development than many of its Central American neighbors.
| Sep 14, 2012
Building codes should require continuous connection from roof to foundation, says IBHS chief
“One of the most effective ways to greatly increase a building’s strength and safety during hurricanes, tornadoes and straight-line windstorms is to be sure the building is tied together properly,” says Julie Rochman, president and CEO of the Insurance Institute for Business & Home Safety (IBHS).
| Sep 7, 2012
Related Companies and unions agree to wage-cutting deal on Hudson Yards
The Related Companies has won wage-cutting agreements with four dozen construction unions in its efforts to save money on the $15 billion development of Hudson Yards.