I am removing about half of a 12’ by 30’ concrete patio. I have cut my new edge with a concrete saw and busted up the concrete (anybody need some fill west of Boston??). Now I’m looking at gravel about 10” deep. My concern is that as I remove the gravel (to replace with soil for grass) the gravel under the remaining concrete slab is tumbling out, leaving the edge of the slab poorly supported. How can I secure the gravel in place at the new edge of the slab?
Thanks for any thoughts!