Backfill and soil compaction are integral to the effective replacement of the cut core. Using the proper materials during backfill and core replacement will prolong the life of the pavement. After proper backfilling the keyhole core that was originally cut from the pavement is reinstated back as a permanent restoration of the roadway using special bonding products. Site restoration requires no temporary patching, overnight road plating, or return trips to make final restorations. The road is restored to traffic-bearing strength in as little as 30 minutes following job completion.