I have a concrete-pebble driveway that has been repaired. The area that was cut with a diamond saw needs a bit of help. A few of the pebbles have popped out along the cut surface and I want to fill those holes with a cement-like mixture. My problem has been that all the materials I have tried lack strength and adhesion. Please see attached photos. Any suggestion as to how I can mix up some "cement" to repair the voids.
Norm