Deteriorated and corroded stay-in-place forms often indicate what condition?

Deteriorated and corroded stay-in-place forms often indicate what condition?

• A. Water infiltration
• B. Structural damage
• C. Contamination of concrete decks
• D. Increased porosity

Answer: (C)

Deteriorated stay-in-place forms point to chemical attack inside the deck. These forms are left as part of the deck structure, so when they corrode or break down, it usually means aggressive substances—like chlorides from road salts or other contaminants—have penetrated the concrete and reached embedded materials. That intrusion signals contamination of the concrete deck, which can drive corrosion of reinforcement and overall deck deterioration. While water infiltration or broader structural damage can accompany this, the corrosion and breakdown of the forms themselves are most directly tied to contamination within the deck.

Deteriorated stay-in-place forms point to chemical attack inside the deck. These forms are left as part of the deck structure, so when they corrode or break down, it usually means aggressive substances—like chlorides from road salts or other contaminants—have penetrated the concrete and reached embedded materials. That intrusion signals contamination of the concrete deck, which can drive corrosion of reinforcement and overall deck deterioration. While water infiltration or broader structural damage can accompany this, the corrosion and breakdown of the forms themselves are most directly tied to contamination within the deck.