The use of calcium chloride as an accelerating admixture is generally avoided in
- ACold weather conditions
- BConcrete with embedded steel reinforcementCorrect
- CConcrete pavements
- DMass concrete works
Solution
Concept
Chloride and corrosion
Step-by-step solution
1. Chloride ions break the protective film on steel.
Explanation
CaCl₂ is avoided with embedded steel because of corrosion.
Why the other options are wrong
It is acceptable in cold weather and mass concrete.
Shortcut
Chloride + steel = corrosion.
Correct answer: B) Concrete with embedded steel reinforcement