Adaptive Experimentation

2 posts

meta3 min readCurated summary

AI for American-Produced Cement and Concrete

Meta is expanding its use of AI to help concrete producers create stronger, more sustainable, and more domestically sourced mixes. Its new open-source model, Bayesian Optimization for Concrete (BOxCrete), uses existing performance data and lab results to identify promising formulations faster than traditional trial-and-error methods. Early projects show that AI can improve curing speed and reduce cracking while supporting greater use of U.S.-made cement and materials. ## The Case for AI-Designed Concrete - The U.S. produces about 400 million cubic yards of concrete annually. - Although ready-mix concrete is generally produced domestically, roughly 20–25% of cement consumption is supplied by imports. - Concrete mix designers must balance: - Structural strength - Curing speed - Workability and slump - Cost - Sustainability - Traditional design depends on laboratory experimentation, engineer judgment, and historical knowledge, making it slow and expensive to adapt. - Different cements have different chemistries, so a formulation that works with one cement may fail with another. ## Supporting Domestic Cement Production - Greater use of U.S.-made cement could strengthen domestic manufacturing, jobs, and investment. - Reshoring and foreign direct investment have returned more than 1.1 million jobs to the U.S. since 2020. - The cement and concrete sector contributes over $130 billion annually and supports approximately 600,000 jobs. - AI can help producers reformulate mixes around locally available materials without compromising performance. ## BOxCrete and Open Data - Meta is releasing BOxCrete on GitHub as an open-source model for concrete mix design. - Compared with earlier models, BOxCrete is more robust to noisy data and can predict concrete slump, an important measure of workability. - Meta is also publishing the foundational dataset used to develop the concrete mix for its Rosemount, Minnesota, data center. - The associated research paper describes the model, data, and methodology. ## Results in Minnesota - Meta, Amrize, Mortenson, and the University of Illinois used BOxCrete to design a mix for a data center foundation. - The mix used domestically sourced materials. - It reached full structural strength 43% faster than the original formulation. - It reduced cracking risk by nearly 10%. - After meeting structural requirements, the mix was approved for use in additional parts of the data center. ## Industry Partnerships in Illinois and Pennsylvania - Meta is working with Amrize and the University of Illinois to apply AI to industrial-scale concrete production. - Amrize operates 18 cement plants, 141 cement terminals, and 269 ready-mix sites across North America. - Amrize has introduced a “Made in America” cement label and announced nearly $1 billion in planned 2026 investments, partly aimed at increasing domestic cement production. - Pennsylvania-based Quadrel integrated Meta’s open-source framework into its ready-mix software. - Quadrel uses the technology for data preprocessing, batch and test normalization, feature engineering, customer-specific model training, and quality-control workflows. - Its models improve continuously as new field-test results are incorporated. ## Adaptive Experimentation - Meta’s Adaptive Experimentation platform uses Bayesian optimization to search the large space of possible concrete formulations. - The system: - Learns from historical mix designs, laboratory results, and performance metrics. - Proposes candidate mixes likely to satisfy target specifications. - Compares the performance of domestic and imported materials. - Applies technical and ingredient constraints before testing. - Updates its predictions after each new experiment. Meta’s work suggests that open-source AI can make concrete development faster, more data-driven, and better suited to domestic materials. Producers can use BOxCrete and adaptive experimentation to reduce laboratory costs, improve performance, and support more sustainable and resilient U.S. cement and concrete supply chains.

Read original(opens in new tab)
metaOriginal article

Efficient Optimization With Ax, an Open Platform for Adaptive Experimentation (opens in new tab)

Meta has released Ax 1.0, an open-source platform designed to automate and optimize complex, resource-intensive experimentation through machine learning. By utilizing Bayesian optimization, the platform helps researchers navigate vast configuration spaces to improve AI models, infrastructure, and hardware design efficiently. The release aims to bridge the gap between sophisticated mathematical theory and the practical requirements of production-scale engineering. ## Real-World Experimentation and Utility * Ax is used extensively at Meta for diverse tasks, including tuning hyperparameter configurations, discovering optimal data mixtures for Generative AI, and optimizing compiler flags. * The platform is built to handle the logistical "overhead" of experimentation, such as managing experiment states, automating orchestration, and providing diagnostic tools. * It supports multi-objective optimization, allowing users to balance competing metrics and enforce "guardrail" constraints rather than just maximizing a single value. * Applications extend beyond software to physical engineering, such as optimizing design parameters for AR/VR hardware. ## System Insight and Analysis * Beyond finding optimal points, Ax serves as a diagnostic tool to help researchers understand the underlying behavior of their systems. * It includes built-in visualizations for Pareto frontiers, which illustrate the trade-offs between different metrics. * Sensitivity analysis tools identify which specific input parameters have the greatest impact on the final results. * The platform provides automated plots and tables to track optimization progress and visualize the effect of parameters across the entire input space. ## Technical Methodology and Architecture * Ax utilizes Bayesian optimization, an iterative approach that balances "exploration" (sampling new areas) with "exploitation" (refining known good areas). * The platform relies on **BoTorch** for its underlying Bayesian components and typically employs **Gaussian processes (GP)** as surrogate models. * GPs are preferred because they can make accurate predictions and quantify uncertainty even when provided with very few data points. * The system uses an **Expected Improvement (EI)** acquisition function to calculate the potential value of new configurations compared to the current best-known result. * This surrogate-based approach is designed to scale to high-dimensional settings involving hundreds of tunable parameters where traditional search methods are too costly. To begin implementing these methods, developers can install the platform via `pip install ax-platform`. Ax 1.0 provides a robust framework for moving cutting-edge optimization research directly into production environments.