Hello,

Some of the popular, demanding specialization in M.Tech civil Engineering are

• Transportation Engineering
• Structural Engineering
• Infrastructure Engineering and Management
• Hydraulics and Water Resources Engineering
• Geoinformatics
• Geotechnical Engineering
• Environmental Engineering

These are the popular specialization in Civil Engineering and you should choose the one which you find more interesting. There are lot of job opportunities available for structural and transportation Engineering. Also, you can get various research scopes as well.

Good luck!