A new paper by Prof. Admir Masic and his colleagues reinforces his theory that the ancient Romans used a technique called “hot-mixing” to create concrete, reports Andrew Paul for Popular Science. “The evidence resides at an ancient Roman construction site preserved in great detail by the Mount Vesuvius eruption,” explains Paul. “Isotopic analysis confirmed that the workers in Pompeii relied on hot-mixing when making their concrete.”
By studying a workshop that was buried in Pompeii almost 2,000 years ago, Prof. Admir Masic and his colleagues have uncovered how the ancient Romans created self-healing and long-lasting concrete, reports James Woodford for New Scientist. Masic and his team were stunned at how “exceptionally well preserved” the site was and that it offered an opportunity to understand Roman concreting methods in a way that “no laboratory reconstruction could ever replicate”. He adds: “The materials were exactly as they were at the moment the eruption froze the city in time,”
While visiting a house that was under renovation when Mount Vesuvius erupted, MIT researchers were able to confirm the tools and ingredients used by ancient Romans to create long-lasting concrete, reports Humberto Basilio for Scientific American. “The hot mixing method creates fragmented, highly porous lime clasts within the mortar that allow calcium to easily travel through the material and recrystallize to fill cracks,” Basilio explains. “Understanding and mastering this “self-healing” technology will allow engineers to use the technique in modern construction.”
Prof. Admir Masic and his colleagues have confirmed that ancient Romans utilized “hot-mixing,” a technique that combines quicklime with volcanic rock, volcanic ash, and water, to create concrete that has lasted for thousands of years, reports Margherita Bassi for Gizmodo. “The team also discovered weights and measurement tools, which they propose may have been used to maintain concrete pouring ratios and build straight, even walls,” writes Bassi. “In short, the site revealed the clearest evidence yet of the ancient Roman use of hot-mixing in concrete.”
While analyzing samples from a newly-discovered construction site in Pompeii, researchers at MIT confirmed the ingredients and methods behind the ancient Romans’ durable and self-healing concrete, reports Will Dunham for Reuters. "Modern concretes generally lack intrinsic self-healing capability, which is increasingly important as we seek longer-lasting, lower-maintenance infrastructure," explains Prof. Admir Masic. "While the ancient process itself is not a direct replacement for modern standards, the principles revealed can inform the design of next-generation durable, low-carbon concretes."
Researchers at MIT have developed electron-conducting carbon concrete, a new kind of cement “that can store and release electricity like batteries,” reports Matthew Burgos for Design Boom. “MIT’s concrete battery shows a future where the material can be embedded into roads or parking areas to charge electric vehicles directly, or for off-grid homes that do not need external power,” Burgos explains.
Researchers at MIT have developed an “AI-powered tool that scans scientific literature and over 1 million rock samples to identify materials that can partially replace cement in concrete,” reports Samanatha Hindman for Yahoo! News. The new system could “change how we build cities forever,” says Hindman. “The system sorts materials based on their physical and chemical properties, narrowing them down by how well they hold concrete together when mixed with water (hydraulic reactivity) and how they strengthen it over time (pozzolanicity).”
Prof. Jessika Trancik speaks with ABC News reporter Julia Jacobo about the role of green hydrogen in decarbonization efforts. “Hydrogen itself could be a really important component to a green transition,” says Trancik.
Prof. Christopher Reinhart speaks with GBH reporter Craig LeMoult about the feasibility of harvesting energy from the Charles River. Reinhart notes that using renewable heat pumps along with the old, existing steam infrastructure could be a good option for Boston and other cities around the country that have district energy systems. “I think you would see a lot of those, especially with the overall push towards decarbonization,” says Reinhart.
Prof. Admir Masic speaks with New York Times reporter Amos Zeeberg about his research studying the benefits of lime clasts – a material used in ancient Roman infrastructure. According to Masic’s research, “these lime clasts were actually reservoirs of calcium that helped fill in cracks, making the concrete self-healing,” writes Zeeberg. “As cracks formed, water would seep in and dissolve the calcium in the lime, which then formed solid calcium carbonate, essentially creating new rock that filled in the crack.”
With skateboarding the sixth fastest-growing sport in the U.S. from 2019 to 2023, Bloomberg reporter Alexandra Lange highlights how Alexis Sablone MA ’16, coach of the 2024 Olympic Women’s U.S. Skateboarding Team, a three-time X-Games gold medalist, and graduate of MIT’s Department of Architecture, recently “designed a set of sculptural skate elements for a former tennis court, formalizing and aestheticizing what had been an informal spot” at a park in Montclair, New Jersey.
Prof. Stuart Madnick speaks with CNBC reporter Trevor Laurence Jockims about cybersecurity attacks on American water systems. Madnick explains that while a population’s water has not been shut off due to a hack, but “we have demonstrated in our lab how operations, such as a water plant, could be shut down not just for hours or days, but for weeks. It is definitely technically possible,” Madnick explains.
An analysis by The Atlantic’s Ronald Brownstein notes despite Republican resistance to electric vehicles, many new production facilities are located in GOP-represented states. MIT Innovation Fellow Brian Deese explains EV companies are simply seeking space and nearby manufacturing and construction capacity, but said “it’s pretty hard to think of a technology where there was a cheaper, better technology to solve a consumer need and consumers prioritized a cultural or political patina over lower costs and higher quality.”
Prof. Carlo Ratti and the WeBuildGroup have developed a proposal to help rebuild the Francis Scott Key Bridge in Baltimore, Maryland, reports Anna Cooban for CNN. Ratti explained that the blueprint was designed to “produce a safer bridge by widening the channels through which ships can pass, among other measures.” The design will help prevent “the risk of a tragedy such as the one of March 26 happening again,” Ratti explains.
Writing for The Hill, Principal Research Scientist Randolph Kirchain and Research Scientist Hessam Azarijafari address how the condition of the nation’s road system impacts transportation emissions. “Investing in a higher-performance road system is a lever within state control that will improve the efficiency and carbon emissions of all vehicles, regardless of how each is powered,” write Kirchain and Azarijafari. “Smoother, stiffer roads allow cars to travel along it more efficiently. Every time a car tire traverses a bump, crack, or pothole, energy is wasted.”