1. Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL USA.
2. Department of Materials Science and Engineering, Northwestern University, Evanston, IL USA.
3. Materials and Construction Research Division, National Institute of Standards and Technology , Gaithersburg, MD USA.
4. Lafarge Centre de Recherche, St Quentin Fallavier, France.
5. Civil & Environmental Engineering, Princeton University, Dept. Civil & Env. Eng/PRISM, Princeton Univeresity, Princeton, NJ USA.