1. Nano-Composite Materials for Durable Infrastructures, Gandhigram University, Dindigul, 30th March 2012.
2. NDT techniques for corrosion monitoring of reinforced concrete structures, University of California Irvine, 15th Sept 2011.
3. Embeddable Sensors for corrosion monitoring of concrete structures, University of California, Berkeley 14th Oct. 2011.
4. Chaired a technical session,” Concrete and Construction Industry” on 22nd May, 2007 at Seoul in the ICEC-2007.
5. Tolerable limit of chloride in Blended Cements: International Corrosion Engineering Conference (ICEC-2000), May 20-24, 2007 held at Seoul, S.Korea.
6. Studies on the development of high durability and multi-functional concrete, Yonsei University, S.Korea.