Building Maintenance
When exposed to fire, concrete has very little strength left after:
- A. 500oC
- B. 300oC
- C. 200oC
- D. 600oC
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.