Concrete Sand is a course sand that is washed and screened to a larger grit than Masonry Sand. Concrete sand is ideal for mixing with cement and aggregate to create concrete.It can also be used to bed pipes and septic systems, used as a base material between a vapor barrier and a concrete slab, for installing paving stones, traction sand for roads and sidewalks, and mixing with topsoil and mulch to create a top dressing material for planting lawns. Being similar to bedding sand it also works for filling and leveling.