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

Discussion

State whether the following is true or false.
All expansion in hardened concrete is undesirable.

  • A.True
  • B.False
  • C.True only at large scales
  • D.False only at small scales

Answer: B

Expansive cements use a controlled expansion deliberately to offset shrinkage. What is undesirable is uncontrolled expansion of the kind free lime and magnesia cause. Controlled and uncontrolled expansion are quite different things.

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

Post your comment

Please log in or register to post a comment.