Stone

Stones used in construction can be divided into two category:
-natural: rocks that are obtained from the earth
-artificial: name for various kinds of synthetic stone products.

1. Natural Stones can be subdivide into 3 types:

(a)Igneous rock       
- rock that was deposited in a molten state of magma.

pumice

granite

basalt

(b)Sedimentary rock
 - rock deposited by the action of wind and ice
 - ex:

sand stone

limestone

dolomite

(c)Metamorphic rock
  - rock that was originally was igneous or sedimentary , heat and pressure which had change the properties of the rock
 - ex:

marbles

slate

quartzites

2. Artificial stones: made by crushing and grinding natural stone, then re-constituting it in a mould with cement mortar.
  - natural stones that is used for the manufacture of artificial stones are:
     (i) calcareous stone: dolomite, marble, limestone
     (ii) siliceous stone: sand, granite, quartzite


  - uesd for exterior house : walls, pavements, top roof flooring
  - ex:

 

Modena Granite stone

Verona Stone