Repairing Concrete Pavers
To extract the first paver in the field, use a putty knife or trowel to scrape out the joint around the paver. Wet the joint, then work the tips of two screwdrivers into the short ends. Pry the paver up until it's high enough to grab, then wiggle it out. If the paver is too compacted, break it apart with a masonry chisel and a 3-pound maul. Remove the rest of the pavers by hand.
Make sure the mason's sand is flat before resetting the pavers. After the pavers are all back in place, sweep new mason's sand into the joints, wet it, then sweep in more until the joints are filled.