river gravel quarrying equipment manufacturer nepal crusher

    How to Maintain a Dirt or Gravel Drive or Road: 7 Steps,  · Usually economics will dictate this, but try to stay away from rounded river gravel. You should try to get crushed (angular) aggregate rock from a quarry. Larger rock, say 1 1/2" to 3" could be placed as the bottom layer, or in deep rutted areas since it won't sink into mud/dirt as easily as smaller rock, but your top/final surface should be a 1" to "fines" gradation.