At present,the influence of environmental factors on the durability of reinforced concrete structures is mainly carbonation and chloride salt erosion.Among them,the influence mechanism of chloride salt erosion is more complex,and a quantified evaluation method needs to be further improved to provide a decision-making basis for the lat-er operation and maintenance of concrete structures.Currently,there are three state standards and one industry stand-ard available to guide the durability assessment of concrete components containing chloride salts,but all of them have application scopes and relatively limited application experience.To meet the needs of engineering applications,the logi-cal relationship of current technical standards was analyzed.Following the current standards,the corrosion mechanism was preliminarily judged based on the detection of steel bar damage and corrosion conditions and the carbonization depth.The key parameters of concrete resistivity and steel bar corrosion current density were corrected in accordance with the atmospheric temperature and humidity by comprehensively applying the standard rules,and the assessment mode was refined.Relying on an engineering case in a coastal city,a systematic inspection of the structure was carried out,and the corrosion mode under the combined action of chloride ions and carbonization was discussed.The rust ex-pansion cracking years and durability margin of concrete components were analyzed according to the proposed frame-work,demonstrating the effectiveness of the analysis mode.
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