A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. Crushers may be used to reduce the size, or change the form, of waste .
· Crusher dust can be various rock types including basalt and blue metal is basalt but dense non vesicular basalt.Basalt is the the most fertile volcanic parent rock being fine grained because the lava cooled fast unlike granite that cooled slowly.Vesicular basalt breaks down faster holds water better so is less inert than the denser blue metal .
frequently asked techinical questions on crushers . crushers for road base blue metal,… frequently asked techinical questions on crushers. crushers for .
Description. A mixture of blue metal gravel and crusher dust that sets to make a hard stable base. It is commonly used for drive ways.
· For a good job definitely go with road base as both ernknot and toolhorder have eluded to. If it is your first time paying pavers take your time with the road base .
Best results are achieved when the road base is rolled and compacted using a machine. Crusher Dust. A sub 7mm Blue metal screening . A variety of uses for this product. A base for a level pad for paving, similar to bedding sand, it is sometimes preferred by brickies. A base for laying concrete slabs or water tanks. Used on driveways and paths .