0 votes 0 votes Crown corrosion in a reinforced concrete sewer is caused by: $H_2S$ $CO_2$ $CH_4$ $NH_3$ Water and Waste Water Quality and Treatment gate2016-ce-1 water-and-waste-water water-resources-engineering concrete-sewer sewerage-treatment + – Milicevic3306 asked Mar 27, 2018 • recategorized Nov 18, 2020 by soujanyareddy13 Milicevic3306 11.9k points answer See all 0 reply