Consequently , concrete easily degrades by free-thawing impact , acid corrosion , alkali-aggregate reaction and so on , and carbonation and chloride corrosion in concrete surely cause the rust of rebar , which certainly destroyed the concrete structures .

• 因此,混凝土会因氯化物侵蚀和碳化引起钢筋锈蚀、冻融侵蚀、硫酸盐侵蚀、碱集料反应等而导致性能劣化。