Researchers from MIT’s Concrete Sustainability Hub discuss their research showing that increasing the reflectivity of paved surfaces could help lower air temperatures in U.S. cities by an average of 2.5 degrees. “If we reflect more energy back out, it’s the same as emitting less CO2,” says Randolph Kirchain, co-director of the Concrete Sustainability Hub.
Principal Research Scientist Randolph Kirchain, co-director of the Concrete Sustainability Hub, speaks with Jane Margolies of The New York Times about how the Inflation Reduction Act expands eligibility for tax credits for installing emissions-reduction equipment at manufacturing plants. “These credits are really valuable to keep technology coming down in cost,” says Kirchain.
Writing for The Boston Globe, Randolph Kirchain, co-director of the MIT Concrete Sustainability Hub, and postdoctoral associate Hessam Azarijafari explore how cool pavements could be used to address urban heat. “If Boston were to properly implement cool pavements, it would reduce its CO2 emissions by 1.5 million tons over 50 years — between 1 and 3 percent of the reductions needed to meet its 2050 carbon neutrality pledge,” they write. “These reductions would come from not just reflectivity, but also from better road quality over time.”
Writing for The Conversation, MIT Concrete Sustainability Hub Co-Director Randolph Kirchain and postdoctoral associate Hessam AzariJafari explore how building lighter-colored, more reflective roads could potentially help lower air temperatures and reduce heat waves. “As cities consider ways to combat the effects of climate change, we believe strategically optimizing pavement is a smart option that can make urban cores more livable,” they write.
In a letter to The Guardian, Prof. Franz-Josef Ulm, Randolph Kirchain and Jeremy Gregory of the Concrete Sustainability Hub argue that “concrete remains a vital means of social and economic transformation for developing nations.” The authors add that “we ought to expand our understanding of it and use its full potential to enable sustainable development.”
Jeremy Gregory, executive director of the MIT Concrete Sustainability Hub, writes for USA Today about how the quality and condition of a roadway impacts a vehicle’s fuel use and greenhouse gas emissions. “Actions that improve road design and conditions can reduce vehicle fuel consumption and emissions,” argues Gregory.
In an article for The Huffington Post, Erik Rancatore highlights how “researchers at the MIT Concrete Sustainability Hub have developed a method to incorporate the risk and repair costs of damage from hurricanes and earthquakes into life-cycle analysis of residential buildings.”
Johanna Knapschaefer writes for ENR that MIT researchers have developed a new pavement-vehicle interaction test to measure the amount of fuel saved from driving on repaved highways. “For each road, we know the amount of traffic, the temperature [of the pavement], structural data, material data and GPS coordinates,” explains Prof. Franz-Joseph Ulm.
USA Today reporter Tracy Moran writes about the use of environmentally friendly materials in constructing buildings, highlighting Prof. Rolland Pellenq’s work to make concrete more sustainable. “His work has proven that reducing the ratio of certain materials can make concrete nearly twice as resistant to fractures while cutting concrete emissions by as much as half,” writes Moran.
David Weinberg of Marketplace reports that MIT researchers have developed a formula for concrete that reduces its greenhouse-gas emissions. Dr. Roland Pellenq explains that to make a “greener” cement, researchers examined concrete’s properties at the “sub-micron or big-nano level.”
Professor Rolland Pellenq’s team has developed a new formula that would reduce the greenhouse gas emissions associated with concrete production by half, reports Julia Pyper for Scientific American. The mixture also achieves "two times the resistance of normal cement, in mechanical resistance to fracture,” says Pellenq.
New York Times reporter Colin Nickerson writes about Professor Linn Hobbs’ research into whether the ancient Egyptians used a synthetic material to build the Great Pyramids. "It could be they used less sweat and more smarts," Hobbs told The New York Times.