Which structural consequence occurs when chloride ions penetrate concrete and reach the embedded rebar?

💡 Explanation

When chloride ions reach the rebar, they disrupt the passive layer on the steel surface, enabling electrochemical corrosion because chloride acts as a catalyst for oxidation, resulting in rust expansion that causes concrete cracking. Therefore accelerated spalling and corrosion occur, rather than compressive strength increase, thermal expansion change, or bond strength enhancement, which require different chemical/mechanical conditions.

• Which consequence results when a heavy landing reduces the efficiency of aircraft landing gear?
• Which consequence results when insufficiently pre-tensioned steel tendons yield excessively?
• Which outcome is most likely upon the failure of a gasoline direct injector’s (GDI) anti-soakback mechanism?
• Which outcome occurs when improperly sized breakers are installed in a critical uninterrupted power supply's (UPS) distribution panel?
• Which outcome occurs when excessive harmonics distort voltage waveform in power circuits feeding sensitive medical equipment?
• Which critical issue arises when high-strength steel beams experience Hydrogen Embrittlement near welded joints?