Characteristics & Qualities of stones
For the selection of stone of particular work, one must be familiar and aware of its composition, uses , characteristics, and place of availability.
Granite
Igneous rock
Composed of quart, felspar and minerals & mica
Available in grey, green, brown and pink and red
Durable &n Hard
To weathering, High resistance
The texture varies with its quality
compressive strength 700 to 1300 kg/cm2 & Specify gravity 2.7
Used for road metal, ornamental, railway ballast, aggregate for concrete; for construction of piers , bridges, and marine works etc.
Balast
Balast
Igneous rock
It is hard and heavy & compact
3.Available in, yellow, red, grey, greenish black & blue color
Compressive strength varies 1530 to 1890kg/cm2 & Specific gravity is 3
Used for ornamental, aggregates for concrete, rail road ballast, etc.
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