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Q: According to IS : 712 classification of lime, Class B lime is known as _____
  • A. Magnesium lime
  • B. Fat time
  • C. Semi-Hydraulic lime
  • D. Dolometic lime
Correct Answer: Option C - As per IS 712-1984– Cl– 3.1 Building lime– Class A- Eminently hydraulic lime used for structures purposes. Class B- Semi-hydraulic lime used for masonry mortars lime concrete and plaster undercoat. Class C- Fat lime used for finishing coat in plastering, white washing, composite mortar etc. Class D- Magnesium/dolomitic lime used for finishing coat in plastering, white washing. Class E- Kankar lime used for masonry mortars. Class F- Siliceous dolomitic lime used for undercoat and finishing coat of plaster.
C. As per IS 712-1984– Cl– 3.1 Building lime– Class A- Eminently hydraulic lime used for structures purposes. Class B- Semi-hydraulic lime used for masonry mortars lime concrete and plaster undercoat. Class C- Fat lime used for finishing coat in plastering, white washing, composite mortar etc. Class D- Magnesium/dolomitic lime used for finishing coat in plastering, white washing. Class E- Kankar lime used for masonry mortars. Class F- Siliceous dolomitic lime used for undercoat and finishing coat of plaster.

Explanations:

As per IS 712-1984– Cl– 3.1 Building lime– Class A- Eminently hydraulic lime used for structures purposes. Class B- Semi-hydraulic lime used for masonry mortars lime concrete and plaster undercoat. Class C- Fat lime used for finishing coat in plastering, white washing, composite mortar etc. Class D- Magnesium/dolomitic lime used for finishing coat in plastering, white washing. Class E- Kankar lime used for masonry mortars. Class F- Siliceous dolomitic lime used for undercoat and finishing coat of plaster.