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结构混凝土中的钢筋腐蚀,主要是由于其中存在氯离子的缘故。当混凝土中氯离子和浓度达到0.5～1mg/m~3时,氯离子将溶解掉保护性氧化膜,这样就会导致里面的钢筋受到腐蚀。当钢筋受到腐蚀后,混凝土结构的质量就会受到影响。因此,早期的钢筋腐蚀检测,对于基础设施的长期有效管理到关重要。 由于声波发射技术能够检测到微弱的应力波,因此该项技术成为检测的首选技术。当正在腐蚀的钢筋上产生腐蚀生成物时,这些腐蚀生成物对周围
Corrosion of steel in structural concrete is mainly due to the presence of chloride ions. When the concentration of chloride ions in concrete reach 0.5 ~ 1mg / m ~ 3, chloride ions will dissolve the protective oxide film, which will lead to the inside of the steel corrosion. When the steel is corroded, the quality of the concrete structure will be affected. Therefore, early detection of steel corrosion is crucial to the long-term effective management of infrastructure. As acoustic emission technology can detect weak stress waves, so this technology has become the detection of the preferred technology. When corrosion products are generated on the corroded steel, these corrosive products are around