I've been laying re-cycled concrete pavers as a soldier course for a circular patio.
I've used a 9:1 ballast/cement mix.
The pavers don't seem to be firmly stuck in place - a light tap will dislodge them.
Is there something I should do when laying to improve adhesion?
The pavers will require pointing due to the smallish radius (about 5 feet). Will pointing improve things?
Should I tap the pavers out and "glue" them with a thin mortar layer?
There's no need for the blocks to be bonded to the bedding - the haunching is intended to hold them securely in place. Have you haunched the external edge?
if it where me in the situation i would double the amount of op and make a slightly wetter mix and use a rubber mallet to seat them firmly, this should do it, give it 48 hrs before testing though.