Some rocks, such as limestone, are sedimentary and not very dense and could be made more dense by massive crushing, however it is almost impossible to crush harder rocks such as marble.
Shale
Concrete need a uniform and compacted base, so as long as that rock is uniform and compacted, you should be fine.
It is called sedimentary rock.
It is called sedimentary rock.
the answer is shale.
When molten rock breaks through sedimentary (compacted sand) rock
When rock compacts
When sedimentary rocks break down and then are compacted by pressure, the resulting rock will be a metamorphic rock.
That would depend on what the cementing material is and how densely it is compacted.
A rock is amineral
sedimentary rock
under ground, where it gets compacted and squeezed to form metamorphic rock.