this civil engineering documents related to engineering material

1. Topic
Introduction And Preparation Of Lime
Setting And Hardening Of Lime Comparison
Cost And Characteristic Of Lime And
Cement
Name Zafar ali
ID 13710
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2. Lime
Lame is a calcium containing inorganic material composed
primarily of oxide and hydroxide.
Preparation of lime.
 once crushed in size the limestone.
 Than fed into kellin where it is calcined.
 Basically cooked at temperature is high about 2000
Fahrenheit.
 After this process the extreme heat cause the limestone to
chemical release co2.
 At the end result made a lime.
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3. Setting of lime
The process of hardening of lime after it has been converted into paste form as
known as setting of lime.
Hardening of lime.
 Hardening of lime mortar is a gradual process.
 after the setting of mortar attains its strength progressively.
 The hardening of lime paste or mortar is caused by the absorption of
carbon from the air.
 The presence of excess water unites calcium hydroxide to form calcium
carbonate .
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4. Application of lime
 Lime is used in the manufacturing of steel in order to remove the impurities.
 Soil stabilization for construction of road airfields and building lime in large
quantity.
 Lime slurry is used as mortar for masonry work and for plastering .
 Lime is used as an additive in asphalt which helps to improve the property
of cohesion.
 Use of lime
 Lime product provide a key for many essential process.
 Purifying drinking water.
 Making sugar.
 Cleaning gases from power station .
 For construction of building etc.
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5. Characteristic of lime
 it is less brittle.
 It is white or greyish or greyish in color.
 It set slowly when mixed in water.
 It delays the construction.
 It possesses less strength.
 It help to reduce moister and improve the environment of building.
 Lime hardens slowly when mixed in producing mortar.
 It can not be used for important and heavy engineering structures.
 It is cheaper.
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6. Characteristic of cement
 It is more brittle.
 It is greenish- grey in color.
 It set rapidly when mixed in water.
 No delay in construction as compared to lime.
 It possesses high strength.
 It can absorb water causing moisture to accumulate epically in the basement.
 The cement hardens quickly when mixed in a mortar.
 It can be used for important and heavy engineering structure.
 It is expensive.
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