I reckon your PhD work aims at strengthening concrete. Besides glass & ceramics, you may think of using plastics also. These particles, within the concrete's matrix, may be distributed evenly and may not aggregate in isolated zones. You do not need to specify the type of concrete as C-25 mega Pascal. Therefore, my suggestion for a general title for your PhD thesis is:
The Use of Solid Wastes as Additives in the Modification of Concrete