材料期刊网

对于市政排污管道而言,硫酸杆菌往往是造成其腐蚀的一个主要原因.本文总结了近年来混凝土硫酸杆菌腐蚀的研究进展.归纳认为针对混凝土硫酸杆菌腐蚀的研究大致可以分为两种实验研究方法:细菌模拟测试和现场暴露测试.同时还介绍了混凝土硫酸杆菌的腐蚀机理以及硫酸杆菌侵蚀与化学硫酸侵蚀的区别;总结了在评价混凝土抗硫酸杆菌侵蚀性能时使用的各种参数以及提高混凝土抗侵蚀性能的措施.最后认为虽然对混凝土的硫酸杆菌腐蚀的研究取得了一些进展,但是该领域在国内尚属起步研究阶段,在腐蚀程度的评价、预测模型的建立、细菌与母体的关系以及是否可以利用细菌活动来提高混凝土的抗腐蚀能力等方面的研究还很欠缺,建议尽快加强这些方面的研究

Thiobacilli corrosion is often a problem in sewer environment. The research progresses of thiobacilli on concrete corrosion in recent years were reviewed. It’s concluded that the research done on thiobacilli corrosion of concrete can roughly be divided into two groups: bacteria simulation tests and exposure tests in situ .The corrosion mechanism of concrete induced by thiobacilli and the distinction between sulfuric acid corrosion and thiobacilli corrosion were explained. In addition, the parameters which were used to evaluate the concrete’s corrosion degree and the methods which were used to improve the concrete’s durability were also concluded. The conclusions as following are made at the end: Though some advances had been made so far, there are a lot of void in the study of concrete corrosion resulted from thiobacilli. Especially the grading of the corrosion, the models for predicting corrosion rate, the relationship between substratum and the bacteria responsible for the production of the sulfuric acid and whether can utilize the bacteria to improve the concrete’s durability or not should be intensified as soon as possible.