- Asked 3/26
- 2076 Chaitra · 3 marks
- 2075 Asoj · 4 marks
- 2078 Kartik · 2 marks
Types of lime, properties and uses
Short answer
Fat lime (over 95% CaO) slakes vigorously, sets in air, and is used for whitewashing and plastering. Hydraulic lime (5–30% clay) sets under water and is used in damp places and foundations; poor lime (over 30% clay) is weak and used for inferior mortar.
Classify lime and explain the different types of lime with their properties and suitable uses.
Lime is a cementing material obtained by burning limestone (calcium carbonate). It is classified as follows (IS 712).
| Type | Composition | Properties | Uses |
|---|---|---|---|
| Fat (high calcium) lime | Almost pure CaO (over 95%) | Slakes vigorously with large expansion, sets slowly in air, white colour | Whitewashing, plastering, mortar for ordinary masonry |
| Hydraulic lime | CaO with 5-30% clay | Sets under water, slakes slowly. Feebly (5-15% clay), moderately (15-25%) or eminently (25-30%) hydraulic | Mortar for damp places, foundations, masonry in water |
| Poor (lean) lime | CaO with over 30% clay or impurities | Slakes slowly, weak strength, sets slowly, dirty white colour | Inferior mortar, plastering of inside walls and in dry places |
Other forms are quick lime (CaO), slaked lime (Ca(OH)₂) and hydrated lime. Magnesium lime (dolomitic) contains over 5% magnesia and is used in plaster.
Hydraulic limes are also used in structural work and for lime-surkhi mortar, while fat lime is mainly used for finishing.
✓ Answer checked by Claude Opus 5.5 (high effort)
Related questions
- Properties and uses of lime · Civil Engineering Materials, chapter 4 · asked 2×
- Fat lime composition, properties, uses · Civil Engineering Materials, chapter 4
- Hydraulic and fat lime properties · Civil Engineering Materials, chapter 4
- Asphalt properties and uses · Civil Engineering Materials, chapter 10 · asked 4×
- Properties and uses of glass · Civil Engineering Materials, chapter 10 · asked 3×
- Non-ferrous metals properties and uses · Civil Engineering Materials, chapter 8
- Intensive vs extensive; classify given properties · Fundamental of Thermodynamics & Heat Transfer, chapter 1
- Flow net: definition, properties, uses · Soil Mechanics, chapter 7 · asked 7×
- Properties and uses of granite, phyllite, limestone · Engineering Geology I, chapter 4 · asked 4×
- Properties and uses of soft magnetic materials · Electrical Engineering Material, chapter 4