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
Codes and Standards | May 17, 2019
Dept. of Energy to award up to $33.5 million for advanced construction R&D
Focus is on techniques to reduce energy bills.
Codes and Standards | May 16, 2019
Mixed reviews on targeted tax break for San Francisco neighborhood
“Twitter tax break” may have worsened some of the area’s problems.
Codes and Standards | May 15, 2019
OSHA inspections to increase, says Secretary of Labor
Newly hired inspectors getting up to speed.
Codes and Standards | May 14, 2019
Database records more than 1,360 K-12 school shooting incidents since 1970
Naval Postgraduate School program maps locations nationwide.
Codes and Standards | May 13, 2019
In many cities, downtown housing comes with a hefty premium
Urban core living costs hundreds of thousands more in largest U.S. cities.
Codes and Standards | May 7, 2019
San Francisco plan would require largest commercial buildings to use 100% renewable electricity
First in the U.S. mandate would be phased in from 2022 to 2030.
Codes and Standards | May 7, 2019
ABC says best practices can improve construction companies’ safety by 680%
Daily ‘toolbox safety talks’ were most effective safety measures.
Codes and Standards | May 7, 2019
Office noise significantly reducing employee concentration, productivity, and creativity
Workplace distractions cause some to choose to work remotely.
Codes and Standards | May 7, 2019
WSP USA says it will be carbon neutral in 2019
Engineering firm will offset carbon at all offices and with employee business travel.
Codes and Standards | Apr 25, 2019
Report: Contractors invest $1.6 billion in workforce development annually
ABC members increased training spending 45% from 2013, according to a new report.
