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A thin layer of lean concrete, fine gravel, or sand that is applied to a surface to smooth over voids in order to provide a cleaner, drier, or more durable finish.
A layer of small rock chips applied over the surface of a freshly tarred road.
Interference with the functioning of a screen mesh by a matting of fine materials during screening. Also known as blocking; plugging.
1. A thin layer of lean concrete or of fine gravel or sand applied to a surface to fill voids and to provide a smoother, cleaner, drier, or more durable finish; esp. fine gravel or sand over freshly placed asphaltic concrete.
2. Sprinkling small stone chips over a freshly tarred road.
3. Placing a material over piping to completely cover it.
4. Compacting of soil directly over a drain tile, thereby reducing its tendency to move into the tile.