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Abstract 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.
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Received: 13 April 2006
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