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 | Feb 10, 2022
Intl. Code Council committee on diversity seeks applicants
New board aims to increase diversity in the membership association.
Codes and Standards | Feb 9, 2022
Climate impact of gas stoves in U.S. equal to half a million cars
New study could increase momentum to ban fossil fuels in new buildings.
Codes and Standards | Feb 7, 2022
Energy efficiency ratings not reflecting true energy use
Highest rated U.K. buildings are less efficient than lower rated ones.
Codes and Standards | Feb 3, 2022
Illinois tops USGBC list of states with the most LEED certified projects in 2021
Top 10 states plus D.C. certified more than 247 million gross square feet.
Codes and Standards | Feb 2, 2022
Public works contracting reform advances in New York State
Governor signs bill to form advisory council that will propose policy changes.
Codes and Standards | Feb 2, 2022
Commercial and multifamily construction starts rebounded in 2021
Following COVID uncertainty in 2020, the industry recovered, but still lags 2019 levels.
Codes and Standards | Feb 1, 2022
Biden Administration launches state, local coalition to boost building performance standards
Will focus on energy efficiency and electrification across the buildings sector.
Codes and Standards | Jan 26, 2022
Downtown digital twin to aid Las Vegas in setting policy priorities
Will be used to address energy use, emissions, traffic, parking, noise, and emergency management.
Codes and Standards | Jan 25, 2022
Modeling tool helps compare options for HVAC systems when little known about a building
Compares projected costs and energy usage for all HVAC systems and hot water consumption.
Codes and Standards | Jan 25, 2022
Critics slam proposed revamp of California’s solar net energy metering rate
Could make rooftop solar panels unaffordable for most customers.
