1. Dept. of Civil Engineering, Univ. of Texas at Arlington, Fort Worth, TX.
2. Director of Engineering, Pavements and Infrastructure Group, CTS Cement Manufacturing Co., Garden Grove, CA.
3. Graduate Student Researcher, Univ. of California Pavement Research Center, Univ. of California at Davis, Davis, CA.
4. Research Manager, Pavements and Infrastructure Group, CTS Cement Manufacturing Co., Garden Grove, CA.