Professor Thomas' primary research interest is the atomic-level structure and microstructure of the calcium-silicate hydrate (C-S-H) gel phase that forms during the hydration of cement-based materials. His research work with the Institute is aimed at providing concrete with properties similar to safety glass in automobiles. The purpose is to provide barrier protection while at the same time separating into very small particles in the event of an explosion, minimizing collateral damage to surrounding buildings and people.