1. Member, ASCE
2. Associate Member, ASCE
3. Student Member, ASCE
4. Dir., NSF Ctr. for Advanced Cement-Based Mat., Northwestern Univ., 2145 Sheridan Rd., Evanston, IL 60208-4400.
5. Asst. Prof., Drexel Univ., Dept. of Civ. and Arch. Engrg., Philadelphia, PA 19104.