808087 Quikrete Companies 1150-47 50 LB, Powerloc Sand Is A Polymer Modified Graded Sand For Filling Between Interlocking Pavers, Brick, Patio Blocks Concrete Slabs, Once Powerloc Jointing Sand Is Swept Into The Paver Joints Dampened With A Water Mist It Hardens, Locking Pavers Into Place, Final Color Resembles Wet Sand.