what are sedimentary rocks used for
The chalk used in classrooms around the world is a type of sedimentary rock. Limestone is a sedimen â¦ tary rock that is used in concrete, building stones, antacids, soil conditioner, and steel making. Coal is another sedimentary rock which is used to produce heat and electricity. Shale is used to make brick. Sandstone and limestone are used as building stone and in the production of glass. 2  Limestone is also used for hard core in roads, and is cooked to make cement. 3  Shale is mixed with sand and used to make bricks.