> Proposes high-potential candidates: The AI suggests new mixes most likely to meet target specifications and can compare performance between U.S.-made and foreign materials
US imports 22% of its cement
> In 2024, Portland and blended cement were produced in 99 plants in 34 U.S. states, led by Texas, Missouri, California, and Florida. Nevertheless, there was significant import reliance. Net imports were 22% of total consumption, with the major source countries being Turkey (32%), Canada (22%), and Vietnam (10%). U.S. exports of cement last year were negligible.
https://www.constructconnect.com/construction-economic-news/....
I'm assuming this isn't for national security reasons, probably more to help the domestic industry deal with tariffs. I hope Meta used their extensive connections to the government.
Civil Engineering is hard, and concrete is a perfect example of how something as "simple" as concrete in reality requires significant interdisciplinary collaboration with domain experts in ChemE, MatSE, Physics, Applied Math, and CS.
Some of the most robust HPC applications I saw back when I was an undergrad were done by Civil and Structural Engineers in the ONG space.
I have real fears that building materials will experience the same inflationary pressures computer memory is currently experiencing. The U.S. TSMC and Intel fab construction alone in the last couple years has had an outsized impact on building costs.
How do you bypass the normal process of pouring test articles and testing them months and years after cure? This is fundamentally a research activity that needs to conduct verifiable science. Not something you can guess at with an LLM.
There should be an app for this. But that's so last-decade.
[1] https://store.forneyonline.com/concrete-testing-equipment/fr...
Looking more closely though, this looks a lot like the Google "AI Cookie" from 2017, which also used Bayesian Optimization: https://blog.google/innovation-and-ai/technology/research/ma...
There is plenty of room for improvement in cement production. I'm not sure exactly how to apply AI to it but I guess I was hoping for more than this. If we are going to have the infrastructure renaissance that keeps being talked up by reformists of various stripes, we need more cement.
South America is also a surprising laggard in cement production, which is odd considering they have the materials and they need the roads. I think that environmental concerns and a continental aversion to coal might contribute.
https://dailygalaxy.com/2026/03/rubber-used-in-undersea-tunn...
Obviously it's going to be more productive for a manufacturer to do a years-long curing test on 100 likely candidates instead of 100 random mixes. They obviously already screen candidates through traditional methods, but if this AI technique improves accuracy, all the better.
I wanted to mention that Concrete is far more complex and regional than folks might imagine. The quality of gravel and sand, local impurities - these all contribute massively. It's probably best to think of it like a wine's terroir - except, unlike a bottle of wine, it's prohibitively expensive to ship both the components and the finalized mixture to different areas. If a region's limestone has a massive clay impurity then it may simply be unsuitable for large structures or require extensive filtering to the point of being uneconomical.
It's important to be aware of just how much the local geological mix can impact the viability of building with concrete because while theoretically we could use perfect concrete for every project - at that point most projects would simply be too expensive to consider undertaking. There is a very large field of engineering around establishing the realism required in settling for what you've got for the price you can afford in. It can absolutely mean that the materials required to build a high rise in Philly might be priced starkly differently from the same structure planned in Milan even with adjustments for the labor impact on pricing.
Our work on concrete here differs in that the problem is both 1) an inherently time-varying, and 2) multi-objective. See our write-up here for details: https://arxiv.org/pdf/2310.18288
We could do this if it is important. There are mines in Wisconsin the export sand to the middle east because that is known to work well for fracking and they don't want to risk a local sand not working well. (AFAIK they have never tested local sand properties, but it is possible they have and it doesn't work). In this case the value of the "perfect" is well worth the high shipping costs.
Cutting out a piece of a slab and sending it to a lab is for post-pour validation in serious construction. There are pre-pour tests that are much simpler depending on the seriousness of what you’re building.
The slump test is rather simple, for example: https://en.wikipedia.org/wiki/Concrete_slump_test
It’s basically a cone with handles and a procedure that’s easy to learn.
This issue here is mainly that it's very expensive to ship all the components of a Concrete in the volume necessary in an economical manner. Some areas of the world just lost the lottery when it comes to having resilient building materials.
Corruption absolutely is an issue as well - I don't mean to downplay it - but even if we remove it as a factor there are just a lot of variables involved in making a reliable Concrete... finding a good mix is an artform and if, for instance, your limestone quary suddenly hits a more clay-laden amalgamation then your Concrete that was reliably lasting for three decades under certain conditions might suddenly lose a decade off the expected lifetime. That change in material quality can also be difficult to detect so there are real quality assurance issues in Concrete mixtures outside of just corruption and cutting corners.
But yeah, there are concrete plants that cut corners and try to save on cement (the most expensive part of the mix), which depending on the project may bite them in the ass when they have to pay to fixing it.
It's no surprise that people readjust their immediate reactions by expressing hostility and skepticism about anything AI-related without spending much time on analysis. In fact, it's an entirely rational repones.
Complaining about it without acknowledging the larger picture is disingenuous.
In this particular case, using the term "machine learning" would likely avoid the immediate negative reaction.
Every year, the United States pours roughly 400 million cubic yards of concrete, enough concrete to pave a two-lane highway that circles the Earth multiple times. It’s the backbone of our bridges, data centers, highways, and homes. However, while we produce most of our ready-mix concrete domestically, we import nearly a quarter of the cement that makes it. Meta’s AI is helping change that.
Concrete consists of a mix of cement and cementitious materials, aggregates, water, and chemical admixtures. Concrete suppliers have to design concrete mixes to meet competing requirements: strength, speed, ease of handling, cost, and sustainability. Traditional concrete mix design relies heavily on trial-and-error in the lab, engineer intuition, and decades of accumulated knowledge—a workflow that is slow and expensive to adapt.
Cement is a key element of concrete, thus imported cement can have a significant impact on U.S. suppliers, stifling U.S. manufacturing, jobs and investments. While ready-mix concrete is typically produced domestically, the cement required for it is heavily imported, with roughly 20-25% of U.S. cement consumption met by imports. Additionally, cement made in the U.S. complies with U.S. performance and environmental standards that are not consistent internationally.
At the same time, ensuring products are produced domestically—a process often called reshoring — generally increases manufacturing jobs in the United States. Reshoring and related foreign direct investment (FDI) have brought over 1.1 million jobs back to the U.S. since 2020, and manufacturing has one of the highest economic multipliers; with every $1.00 spent in manufacturing adding $2.69 to the U.S. economy. The cement and concrete sector alone contributes more than $130 billion annually and supports roughly 600,000 jobs — yet imports still supply about 23% of total domestic demand. To capture more of that value at home, U.S.-based concrete producers want to incorporate more U.S.-made materials in their mixes.
Different cements have different chemistries, and a mix that works perfectly with one cement might fail entirely with another. As a result, producers need a way to rapidly explore and validate new formulations without spending months in the lab.
Meta and its partners have already received a number of awards for these innovations in concrete design, including a 2025 Building Innovation Award for Best Partnership (shared with Amrize) and a Slag Cement Award in 2025 for Sustainable Concrete Project of the Year (shared with Amrize and the University of Illinois at Urbana-Champaign). But the impact of this model is also being felt through on-the-ground collaborations in several states through partnerships with large-scale concrete manufacturers and software companies.
Meta has been partnering closely with the University of Illinois at Urbana-Champaign and Amrize, the largest cement and concrete manufacturer in North America, headquartered in Chicago, IL., on the implementation of AI for sustainable and domestically-produced concrete. Amrize operates 18 cement plants, 141 cement terminals and 269 ready-mix concrete sites across North America. Their scale makes them an ideal partner for demonstrating how AI can transform mix design at industrial volumes. Amrize recently launched a Made in America cement label, which guarantees the cement meets rigorous U.S. standards and was manufactured in the U.S. by a domestic workforce with American materials. The company also recently announced close to $1 billion of capital investments in 2026 in part to increase domestic cement production.
Meta and Amrize will be presenting at the American Concrete Institute (ACI) Spring Convention, along with researchers from the University of Illinois Urbana-Champaign to further showcase our partnership leveraging AI for lower-emission, domestically-produced concrete.
Alongside the event, Meta is releasing a new AI model for designing concrete mixes, Bayesian Optimization for Concrete (BOxCrete). BOxCrete improves over Meta’s previous models with more robustness to noisy data as well as new features including the ability to predict concrete slump (an important indicator of concrete workability).
Coupled with BOxCrete, Meta is releasing the foundational data used to develop the novel concrete mix used in our Rosemount, MN data center. This foundational data is the best systematic foundational data for concrete mix performance compared to other open-sourced, published datasets.
Meta’s researchers have submitted a paper on BOxCrete for publication that outlines the new model, data, and the associated methodology.
In partnership with Amrize, Mortenson and the University of Illinois at Urbana-Champaign, BOxCrete was used to generate a stronger, faster-curing concrete mix that was used at scale in a site support section in one of our data center building slabs in Rosemount, MN.
The AI-optimized mix was designed for one of the most demanding parts of the build: the massive concrete foundation that supports the weight of thousands of servers and cooling systems. Using domestically sourced materials, the mix reached full structural strength 43% faster than the original formula, while also reducing cracking risk by nearly 10% — proving that AI can help American producers rapidly reformulate around U.S.-made materials without sacrificing quality. With the data confirming it meets all structural requirements, the mix is now qualified for use in additional areas of the data center.

Meta’s data center in Rosemount, MN.
In 2023, Meta released its concrete optimization AI framework as open-source software under the MIT license, enabling broad adoption from academia to commercial software providers.
In an effort that reflects how AI-driven mix design is becoming part of the standard infrastructure of concrete production, Pennsylvania-based Quadrel, a leading enterprise SaaS platform serving the ready-mix industry, has adapted Meta’s AI framework in its software. Quadrel has applied it to real-world use cases including data preprocessing, batch and test normalization, feature engineering, and customer-specific model training. The models, which continuously improve over time as field test results are incorporated, have been embedded into daily mix design and quality control workflows, informing day-to-day decisions in quality control and operations.

Meta’s open-source AI model for sustainable concrete is provided under MIT license, allowing for commercial use with minimum restrictions while benefiting from open-source AI advances and investments.
Meta’s AI for concrete model can help suppliers more quickly incorporate U.S. materials into their mixes through an approach called adaptive experimentation.
Here’s how it works:
Meta’s Adaptive Experimentation (Ax) platform uses Bayesian optimization to intelligently navigate the vast space of possible concrete formulations. Instead of testing mixes randomly or relying solely on human intuition, the AI:
While the inclusion of AI and adaptive experimentation does not change the process of lab validation, field trials, engineering sign-off, and code compliance, it greatly improves the speed of discovery, helping engineers find better starting points with fewer tests.

Meta’s AI for concrete is part of a broader commitment to applying machine learning where it can drive measurable, real-world impact. While the work with Amrize, the University of Illinois, and industry software providers like Quadrel represents the first wave of adoption, the goal is an industry-wide shift in how American producers approach mix design.
Over the next few years, Meta is planning to further collaborate with the construction industry to develop new AI tools. As more platforms like Quadrel build on BOxCrete, AI-optimized mix design becomes accessible to producers without requiring them to change their existing workflows. The team is also planning on continued academic collaboration with the University of Illinois Urbana-Champaign to explore how AI can address not just domestic material substitution, but broader challenges in concrete sustainability and performance.
By reducing the barriers to domestic material adoption, Meta is helping American producers compete on cost, reduce emissions, and build supply chain resilience, one mix at a time.
Explore Meta’s open-source BOxCrete for Sustainable Concrete on GitHub.
Read our pre-print: “BOxCrete: A Bayesian Optimization Open-Source AI Model for Concrete Strength Forecasting and Mix Optimization.”
It’s really exhausting to feel negative all the time when faced with the cavalcade of terribly weak claims.
> Alongside the event, Meta is releasing a new AI model for designing concrete mixes, Bayesian Optimization for Concrete (BOxCrete). BOxCrete improves over Meta’s previous models with more robustness to noisy data as well as new features including the ability to predict concrete slump (an important indicator of concrete workability).
Seems hard to imagine not doing a slump test, trusting AI when it comes to your multi/many million dollar build outs for something so important. But perhaps still useful for planning, as a starting place?
That said, I'm not sure if the value can ever be greater than a slump test just before pouring.
It does help, of course, that HN is moderated in good faith and has a more pervasive commitment to self-moderation than Reddit has ever had (outside a few very niche subreddits).