Which outcome impairs a prestressed concrete beam in a marine environment?

💡 Explanation

Chloride ions penetrate the concrete, causing *rebar depassivation* that leads to corrosion embrittlement of the high-strength steel tendons, because the corrosion reduces the tendon's cross-sectional area and load-bearing capacity. Therefore, structural integrity is compromised, rather than from thermal stress or freeze-thaw distress of concrete.

• Which risk increases when a hydraulic turbine operates below its Net Positive Suction Head (NPSH) requirement?
• Which outcome occurs when a proportional control valve experiences excessive hydraulic oil contamination?
• Which consequence results when over-voltages induce flashover inside switchgear circuits?
• Within a three-phase power distribution system, at transformer substations, which increased risk results when impedance differences exist?
• Which consequence results when a collaborative robot's tactile sensor malfunctions during a pick-and-place operation inside a constrained electronics assembly?
• Which risk increases when an abrasive slurry pump lacks adequate Net Positive Suction Head?