在以食盐、氨和二氧化碳为原料的氨碱生产中,产品碳酸钠、氯化铵和原料常会很快渗入钢筋混凝土内,特别在干湿交替和腐蚀物结晶膨胀的条件下,混凝土建筑物和构筑物的强度会急骤下降,影响生产持续进行。过去,这类腐蚀未获重视,在设计中也未采取防护措施。有的虽采取了一些防护措施但并不合理,有的在竣工投产后再采取措施,均不能取得满意效果。为此,有必要对其腐蚀原因进行分析,以引起重视。 In the production of ammonia and alkali with salt, ammonia and carbon dioxide as raw materials, the products of sodium carbonate, ammonium chloride and raw materials often quickly penetrate into the reinforced concrete. Especially under the conditions of alternating wet and dry and the crystal expansion of the corrosion products, The strength of the structure will be reduced sharply, affecting the production continued. In the past, such corrosion was not taken seriously and no protective measures were taken in the design. Although some measures have been taken but they are not reasonable, some measures can not be satisfactorily implemented after they are completed and put into production. To this end, it is necessary to analyze the causes of corrosion to attract attention.