Highways are the arteries of regional economy, and their service life directly determines maintenance costs and traffic safety.
Concrete, as the bonding material between road surfaces and bridge structures, has become the “shortest wooden board” for extending the lifespan of highways due to its durability.
Based on the review of the “normal service limit state durability” clause in current standards, this article summarizes the three major failure mechanisms of steel corrosion, alkali aggregate reaction, and carbonization, and proposes a fourth-order closed-loop strategy of “material selection – structural corrosion resistance – construction control – operation and maintenance”, providing a systematic solution for long-life cement concrete pavement.
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