Which risk significantly increases during the post-tensioning process of a concrete bridge deck when grout density is insufficient?

💡 Explanation

When grout density is insufficient, incomplete filling of the duct occurs, increasing the risk of cable corrosion because it allows moisture ingress, leading to oxidation of the steel strands. Therefore, cable corrosion results, rather than cracking, reduced stiffness or increased creep, requiring alternative mechanisms related to concrete matrix and overall structure.

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