Corrosion of concrete sewer pipes is one of the most serious problems in sewerage works today. This paper describes a new procedure for testing two types of concrete, namely Cement Concrete (CC) and Sulfur Concrete (SC), under the severe chemical and biological conditions. To this aim, two kinds of experiments were performed: 1) in situ experiments on sewer concrete pipes; and 2) in vitro experiments on cubic specimens. Thiobacillus thiooxidans bacterium was selected for performing in vitro biological experiments. Weight loss measurement of samples was used as an indicator for corrosion behavior. The results showed that SC was considerably resistant to severe acid attacks (chemical corrosion) in comparison with CC but less resistant to microbial corrosion attacks. (C) 2018 Elsevier Ltd. All rights reserved.