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    Home » AI stirs up the recipe for concrete in MIT study | MIT News
    Artificial Intelligence

    AI stirs up the recipe for concrete in MIT study | MIT News

    ProfitlyAIBy ProfitlyAIJune 2, 2025No Comments4 Mins Read
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    For weeks, the whiteboard within the lab was crowded with scribbles, diagrams, and chemical formulation. A analysis crew throughout the Olivetti Group and the MIT Concrete Sustainability Hub (CSHub) was working intensely on a key drawback: How can we scale back the quantity of cement in concrete to avoid wasting on prices and emissions? 

    The query was actually not new; supplies like fly ash, a byproduct of coal manufacturing, and slag, a byproduct of steelmaking, have lengthy been used to interchange a number of the cement in concrete mixes. Nonetheless, the demand for these merchandise is outpacing provide as trade appears to scale back its local weather impacts by increasing their use, making the seek for options pressing. The problem that the crew found wasn’t an absence of candidates; the issue was that there have been too many to kind by.

    On Might 17, the crew, led by postdoc Soroush Mahjoubi, revealed an open-access paper in Nature’s Communications Materials outlining their answer. “We realized that AI was the important thing to shifting ahead,” notes Mahjoubi. “There may be a lot information on the market on potential supplies — lots of of 1000’s of pages of scientific literature. Sorting by them would have taken many lifetimes of labor, by which period extra supplies would have been found!”

    With massive language fashions, just like the chatbots many people use day by day, the crew constructed a machine-learning framework that evaluates and kinds candidate supplies based mostly on their bodily and chemical properties. 

    “First, there may be hydraulic reactivity. The rationale that concrete is robust is that cement — the ‘glue’ that holds it collectively — hardens when uncovered to water. So, if we exchange this glue, we’d like to ensure the substitute reacts equally,” explains Mahjoubi. “Second, there may be pozzolanicity. That is when a fabric reacts with calcium hydroxide, a byproduct created when cement meets water, to make the concrete more durable and stronger over time.  We have to steadiness the hydraulic and pozzolanic supplies within the combine so the concrete performs at its greatest.”

    Analyzing scientific literature and over 1 million rock samples, the crew used the framework to kind candidate supplies into 19 sorts, starting from biomass to mining byproducts to demolished development supplies. Mahjoubi and his crew discovered that appropriate supplies have been accessible globally — and, extra impressively, many may very well be included into concrete mixes simply by grinding them. This implies it’s attainable to extract emissions and value financial savings with out a lot extra processing. 

    “A few of the most attention-grabbing supplies that might exchange a portion of cement are ceramics,” notes Mahjoubi. “Outdated tiles, bricks, pottery — all these supplies might have excessive reactivity. That’s one thing we’ve noticed in historical Roman concrete, the place ceramics have been added to assist waterproof buildings. I’ve had many attention-grabbing conversations on this with Professor Admir Masic, who leads a variety of the traditional concrete research right here at MIT.”

    The potential of on a regular basis supplies like ceramics and industrial supplies like mine tailings is an instance of how supplies like concrete may also help allow a round financial system. By figuring out and repurposing supplies that might in any other case find yourself in landfills, researchers and trade may also help to provide these supplies a second life as a part of our buildings and infrastructure.

    Trying forward, the analysis crew is planning to improve the framework to be able to assessing much more supplies, whereas experimentally validating a number of the greatest candidates. “AI instruments have gotten this analysis far in a short while, and we’re excited to see how the most recent developments in massive language fashions allow the subsequent steps,” says Professor Elsa Olivetti, senior writer on the work and member of the MIT Division of Supplies Science and Engineering. She serves as an MIT Local weather Challenge mission director, a CSHub principal investigator, and the chief of the Olivetti Group.

    “Concrete is the spine of the constructed atmosphere,” says Randolph Kirchain, co-author and CSHub director. “By making use of information science and AI instruments to materials design, we hope to assist trade efforts to construct extra sustainably, with out compromising on energy, security, or sturdiness.

    Along with Mahjoubi, Olivetti, and Kirchain, co-authors on the work embody MIT postdoc Vineeth Venugopal, Ipek Bensu Manav SM ’21, PhD ’24; and CSHub Deputy Director Hessam AzariJafari.



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