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

Discussion

Alkali-silica reaction damages concrete by

  • A.forming a gel that swells and cracks the concrete
  • B.dissolving away the hardened cement paste completely
  • C.removing the alkalinity that normally protects the steel
  • D.preventing the cement from setting properly at all

Answer: A

Reactive silica in certain aggregates reacts with the alkalis in the pore solution to form a gel that takes up water and expands. The damage appears years after construction, which makes prevention far more practical than cure.

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

Post your comment

Please log in or register to post a comment.