Building Maintenance

When exposed to fire, concrete has very little strength left after:

  • A. 500oC
  • B. 300oC
  • C. 200oC
  • D. 600oC
Answer: Option D.

Concrete decomposes when exposed to heat. Water evaporates, sand, gravel become molten lava like. Up to 200oC, no changes are noticed. At about 600oC, significant lossoccurs. At 800-1000oC, it completely gives in.

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