June 7, 2021

Visualizing cement hydration on a molecular level

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2021-06-09 00:30:09

June 7, 2021

by Becky Ham, Massachusetts Institute of Technology

The concrete world that surrounds us owes its shape and durability to chemical reactions that start when ordinary Portland cement is mixed with water. Now, MIT scientists have demonstrated a way to watch these reactions under real-world conditions, an advance that may help researchers find ways to make concrete more sustainable.

The study is a "Brothers Lumière moment for concrete science," says co-author Franz-Josef Ulm, professor of civil and environmental engineering and faculty director of the MIT Concrete Sustainability Hub, referring to the two brothers who ushered in the era of projected films. Likewise, Ulm says, the MIT team has provided a glimpse of early-stage cement hydration that is like cinema in Technicolor compared to the black and white photos of earlier research.

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