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Q: The calcined product in cement production is known as-
  • A. gypsum
  • B. ash
  • C. silica
  • D. Clinker
Correct Answer: Option D - • Clinker produced by calcining to incipient fusion, an intimate and properly proportioned mixture of argillaceous and calcareous materials. • The aluminates and silicates of calcium fuse together to form small and hard stone are known as clinkers. The size of clinker is varies from 5-10mm. • The effect of gypsum is to increase the setting time of freshly ground cement. It is usually mixed with the clinker before final grinding, or just after the clinker has received preliminary grinding.
D. • Clinker produced by calcining to incipient fusion, an intimate and properly proportioned mixture of argillaceous and calcareous materials. • The aluminates and silicates of calcium fuse together to form small and hard stone are known as clinkers. The size of clinker is varies from 5-10mm. • The effect of gypsum is to increase the setting time of freshly ground cement. It is usually mixed with the clinker before final grinding, or just after the clinker has received preliminary grinding.

Explanations:

• Clinker produced by calcining to incipient fusion, an intimate and properly proportioned mixture of argillaceous and calcareous materials. • The aluminates and silicates of calcium fuse together to form small and hard stone are known as clinkers. The size of clinker is varies from 5-10mm. • The effect of gypsum is to increase the setting time of freshly ground cement. It is usually mixed with the clinker before final grinding, or just after the clinker has received preliminary grinding.