Machine-translated by Google. Questions are authored in English.
Top

Discussion

Clay or shale is included in a cement raw mix chiefly to supply

  • A.carbon and hydrogen
  • B.silica and alumina
  • C.calcium and magnesium
  • D.sulphur and sodium

Answer: B

These oxides combine with the lime during burning to form the silicate and aluminate phases of the clinker. Without them the kiln would produce quicklime rather than cement, so the proportion of clay is one of the first things a plant controls.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.