The author would like to thank Mr. Robin Haupt of CCRL for supplying the sample of cement 133, Mr. Paul Stutzman of BFRL/NIST for providing the source SEM and X-ray images used in producing the color composite image shown in Fig. 1, Ms. Helene Drud Madsen of the Technical University of Denmark for assistance in sample preparation and degree of hydration measurements, Dr. Xiuping Feng of BFRL/NIST for performing isothermal calorimetry measurements, Dr. Richard Livingston of the Federal Highway Administration for supplying the sample of tricalcium silicate, and Dr. Claus-Jochen Haecker of the Wilhelm Dyckerhoff Institut, Germany for measuring the particle size distribution of cement 133 and for providing the experimental data shown in Figs. 12 to 14. Funding for this research was provided by the NIST Partnership for High Performance Concrete Technology program.