What's the purpose of gravel in concrete?

Answer 1

1. Gravel occupies about 70-80% of the volume of concrete.
2. It makes concrete economical
3. Strength of the concrete is determined only by the gravel. i.e., the body of the concrete.
4. Property of concrete determined by the type of aggregate used.
5. Shrinkage is less when larger size aggregate is used.
   

Answer 2

The main industrial use for gravel is to pave roads and paths. Gravel is also used to help make concrete.

Answer 3

I dont really know, but let me try, The uses of Gravel Soil is to patch up pot holes