I don't know of a residential use.

For roadways, calcined bauxite is applied (bonded would be a better description) in areas where skids frequently occur, to improve traction.

I don't know of a residential use.

It is more a class of stone than a type.

For roadways, high friction aggregates (calcined bauxite is the most common component) is applied (bonded would be a better description) in areas where skids frequently occur, to improve traction.