1. BUILDING CONSTRUCTION
MANOJ RAMI
SAGAR DESAI

2. LIME NAME ROLL NO. DHAVAL KARKAR 14SA122 PIYUSH ZINZALA 14SA162
JEEGAR VARIYA
14SA134
KEINS PRAJAPATI
14SA136
JAY PRAJAPATI
14SA133
MEHUL CHAUDHARY
14SA149

3. INTRODUCTION It is a sedimentary rock
It was formed mainly from sea shells
It is the compound called calcium carbonate
It is a useful raw material
Lime is most commonly used material generally in finishing the major construction

4. Varities of lime
Stone lime Magnesiam lime
Kankar lime Shell lime

5. Physical & Chemical properties
Appearance
white powder
Acidity (pKa)
12.4
Basicity (pKb)
2.37
Density
2.211 g/cm3 , solid
Odor
odorless
Formula
CaO
System
Isometric

7. A thermal decomposition reaction ( Industrial production )
Calcium oxide (quicklime) is produced industrially using a lime kiln
Kiln rotates to ensure that the limestone is mixed with the hot air
Air + carbon dioxide
Hot air in
Limestone in
Lime out
heat
calcium carbonate
calcium oxide + carbon dioxide
A thermal decomposition reaction
( Industrial production )

8. Market avaibility (world wide cost)
72 – 164 $ per metric tonnes
India is a major producer in world of lime….
4.5 – 10 rupee per kg in india

9. Adding water to quicklime
‘slaking’ lime
When water is added to quicklime (calcium oxide), the reaction produces much heat and slaked lime (calcium hydroxide) is formed.
A reaction that produces heat is called an exothermic reaction.
We can write a word equation:
calcium oxide water
calcium hydroxide
or in symbols
CaO H2O Ca(OH)2
Calcium hydroxide solution is limewater which turns ‘milky’ with carbon dioxide.

10. usage Lime is uses in the treatment of water and waste water.
It is used in the manufacture of glass,refractory,sand lime bricks and paints.
It is used as lime morter for mansonry work of buildings.
It is used for plastering and white washing of buildings.
It is used as lime concreat to make water proof stuctures.

11. the uses of limestone Buildings and roads
Mortar (cement + water + sand)
Cement (heat with clay)
Glass (heat with sand and sodium carbonate)
CaCO3
Neutralise acidic soils and lakes
Concrete (cement + sand + gravel + water)

12. Limestone quarrying provides the raw materials for making many important substances such as glass and cement etc. It also provides employment for people and benefits the local economy.
But what exactly are the disadvantages?

13. Limestone Quarrying – some disadvantages
An ‘eyesore’ in areas of the countryside
Noise from blasting
Loss of habitat for wildlife
Dust etc. from lorries

14. Lime vs Cement (comparison)

16. Crushed lime stone
Massive lime stone
Calcined lime stone

17. Plastering
Plasterwork refers to construction or ornamentation done with plaster, such as a layer of plaster on an interior or exterior wall structure, or plaster decorative moldings on ceilings or walls. This is also sometimes called pargeting. The process of creating plasterwork, called plastering,

18. Soda lime glass relatively inexpensive chemically stable
reasonably hard
extremely workable
Because it is capable of being re-softened and re-melted numerous times, it is ideal for glass recycling.

19. Lime softening ( water treatment )
Lime softening, also known as Clark's process , is a type of water treatment used for water softening which uses the addition of limewater (calcium hydroxide) to remove hardness (calcium and magnesium) ions by precipitation. The process is also effective at removing a variety of microorganisms and dissolved organic matter by flocculation.

20. Thank you