MANOJ RAMI SAGAR DESAI LIME NAME ROLL NO DHAVAL KARKAR 14SA122 PIYUSH ZINZALA 14SA162 JEEGAR VARIYA 14SA134 KEINS PRAJAPATI 14SA136 JAY PRAJAPATI 14SA133 MEHUL CHAUDHARY 14SA149 It is a sedimentary rock ID: 378141
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Slide1
BUILDING CONSTRUCTION
MANOJ RAMI
SAGAR DESAISlide2
LIME
NAME
ROLL NO.
DHAVAL KARKAR
14SA122
PIYUSH ZINZALA
14SA162
JEEGAR VARIYA
14SA134
KEINS PRAJAPATI
14SA136
JAY PRAJAPATI
14SA133
MEHUL CHAUDHARY
14SA149Slide3
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
INTRODUCTIONSlide4
Varities of lime
Stone
lime
Magnesiam lime
Kankar
lime
Shell limeSlide5
Physical & Chemical properties
Appearance
white powder
Acidity (
pKa
)
12.4
Basicity (
pKb
)2.37Density
2.211 g/cm3 , solidOdor
odorlessFormula
CaO
System
IsometricSlide6Slide7
Calcium oxide (quicklime) is produced industrially using a
lime kiln
Limestone
in
Hot air in
Kiln rotates to ensure that the limestone is mixed with the hot air
Air + carbon dioxide
Lime
out
calcium carbonate
heat
calcium oxide + carbon dioxide
A thermal decomposition reaction
( Industrial production )Slide8
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 indiaSlide9
Adding water to quicklime
Calcium hydroxide solution is
limewater
which turns ‘milky’ with carbon dioxide
.
We can write a
word equation
:
calcium oxide + water
calcium
hydroxide
CaO + H
2
O Ca(OH)
2
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.
or in
symbols
‘slaking’ limeSlide10
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
.
usageSlide11
the
uses of limestone
Buildings and roads
Glass
(
heat with
sand
and
sodium carbonate
)
Neutralise acidic soils and lakes
Cement
(heat with
clay
)
Mortar
(
cement
+
water
+
sand
)
Concret
e
(
cement
+
sand
+
gravel
+
water
)
CaCO3Slide12
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?Slide13
Limestone Quarrying – some disadvantages
An ‘eyesore’ in areas of the countryside
Noise from blasting
Dust etc. from lorries
Loss of habitat for wildlifeSlide14
Lime
vs
Cement
(comparison)Slide15Slide16
Crushed lime stone
Massive lime stone
Calcined
lime stoneSlide17
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,Slide18
Soda lime glass
relatively
inexpensive
chemically stable reasonably hardextremely workableBecause it is capable of being re-softened and re-melted numerous times, it is ideal for glass recycling.Slide19
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.Slide20
Thank you