1. Post Doctoral Fellowship – Feb.2005 to Aug.2006 – Yonsei University (Under Brain Korea Scheme), South Korea.

ISE – 2005, Seminar on 56th Annual Meeting of the International Society of Electrochemistry, 25-30 September, 2005, Busan, South Korea.

2. KSCE – 2005, Korean Society of Civil Engineers (KSCE) – Japanese Society of Civil Engineers (JSCE), Concrete Committee Joint Seminar, Oct.21st, 2005, South Korea.

3. International Workshop on the Assessment of Existing Structures, Smart Sensors/NDT& Durability of Concrete, May 11-12, 2006, Organized by Korean concrete Institute, South Korea.

4. Workshop on Bridge research Group for Innovative Performance Enhancement Technology (IPET), 26-27th June 2006, South Korea.

5. 20-25th May 2007, for attending ICEC-2007 & presenting the progress report of Sponsored project SSP 14/06 at Yonsei University, South Korea.

6. 1st May to 31st July 2008 for presenting the progress report of the project  “Studies on the development of of High Durability and Multi-functional Concrete” at Yonsei University, South Korea.

7. Raman Research Fellowship – July to Aug.2011 - University of California, Irvine, USA.