Portland cement is primarily made from a mixture of:
Correct answer: A. Limestone and clay
- A. Limestone and clay
- B. Sand and gypsum
- C. Iron ore and bauxite
- D. Salt and water
Explanation
The main raw materials for Portland cement are limestone, which provides the calcium carbonate, and clay or shale, which provides silica, alumina, and iron oxide. These are heated in a kiln to form a product called clinker
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About Industrial Chemistry
Industrial chemistry applies chemical reactions and material properties to the manufacture of adhesives, dyes and polymers. Coverage includes addition and condensation polymerisation, thermoplastics and thermosetting polymers, the structural basis of colour in dyes, and how adhesive composition enables bonding between surfaces.
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