The Concrete Science Platform (CSP) of the MIT Concrete Sustainability Hub recently released a white paper that summarizes the first phase of research results on the structure of calcium-silicate-hydrate (C‑S‑H), the key binding component in cement paste. Researchers in the CSP have created models of C‑S‑H at the atomic-scale that shed new light on its performance in several areas. These studies aimed to discover ways to make a more resilient concrete that lasts longer and reduces the material’s carbon footprint. The CSP concentrated on three areas:  dissolution, precipitation and hardened paste. Each area produced a new model that fills a gap which previously eluded scientists. The models are flexible and can be used to answer questions at nano- to micro-scales as well as at a macro level. For example, the models provide input that might be used by industry to expedite the development, testing, and quality control of cement and concrete materials.

Click here to view a PDF of the full report. Source: Portland Cement Association Executive Report e-newsletter for March 2. The MIT CSHub was established in 2009 with joint funding from the RMC Research & Education Foundation and the Portland Cement Association.