1. What is the best way to do seismic auditing and retrofitting of old buildings?
2. Is fiber reinforced cement and composites a good choice? If so, which is the best?
3. How do we best develop sustainable technologies for infrastructure?
4. How will nanotechnology be helpful in civil engineering in the near future?
5. What is the best method of construction management?
6. How will geoinformatics transform civil engineering?
7. What is ecological engineering and how do we best practice it?
8. What is the best method of transforming the railway infrastructure to make it more efficient and reliable?
By the way, you can further specify these topics to relate to a particular country or place.