Art of extracting stone from rock bed is known as Quarrying QUARRYING OF STONES Art of extracting stone from rock bed is known as Quarrying.

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Presentation transcript:

Art of extracting stone from rock bed is known as Quarrying QUARRYING OF STONES Art of extracting stone from rock bed is known as Quarrying

Methods of Quarrying Quarrying With Hand Tools Digging and excavating Heating Wedging

Methods of Quarrying 2. Quarrying By Channeling Machine:

Methods of Quarrying 3. Quarrying By Blasting: Manufacturing of stone aggregates Materials Gun Powder or Dynamite detonator

Characteristics of Good Stones Appearance and colour Weight Porosity and absorption Compactness - Durability Fire resistance Electrical resistance

Hardness & Toughness Strength Durability Dressing Cost Seasoning – Quarry sap

Criteria for selection of stones High wind exposed building – Heavy engineering works – Fire exposed Building - Flooring & Switch boards – Hardness – Granite Strong, Durable - Granite Fire resisting property - Sandstone Electrical resistance - Marble

Attractive colours – Granite & Marble Roads & Coarse Aggregate- Manufacturing of cement – Facing Works – Ornamental works – Abrasion Resistance - Basalt Lime – Limestone Attractive colours – Granite & Marble Soft - Sandstone

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