A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Biogenic sulfuric acid attack on different types of commercially produced concrete sewer pipes
AbstractLaboratory experiments were conducted to compare the degradation of low and high quality concrete under conditions simulating sewer pipes with and without bacteria. Small concrete samples were exposed to hydrogen sulfide, multiple species of bacteria found in corroding sewer pipes and artificial wastewater. Experiments without bacteria were used as controls. The corrosion rates of the concrete samples exposed to bacteria over 227days were 0.08mm/yr (millimeters per year) for the concrete from a domestic manufacturer with moderate strength and a lower water–cement ratio (Low-w/c) versus 0.208mm/yr for the concrete samples from a foreign country with low strength and a higher water–cement ratio (High-w/c). The (Low-w/c) concrete was more resistant to the biodegradation even though a lower pH was attained for its bioactive systems. Experiments showed the influence of biogenic sulfuric acid production on short term corrosion rates.
Biogenic sulfuric acid attack on different types of commercially produced concrete sewer pipes
AbstractLaboratory experiments were conducted to compare the degradation of low and high quality concrete under conditions simulating sewer pipes with and without bacteria. Small concrete samples were exposed to hydrogen sulfide, multiple species of bacteria found in corroding sewer pipes and artificial wastewater. Experiments without bacteria were used as controls. The corrosion rates of the concrete samples exposed to bacteria over 227days were 0.08mm/yr (millimeters per year) for the concrete from a domestic manufacturer with moderate strength and a lower water–cement ratio (Low-w/c) versus 0.208mm/yr for the concrete samples from a foreign country with low strength and a higher water–cement ratio (High-w/c). The (Low-w/c) concrete was more resistant to the biodegradation even though a lower pH was attained for its bioactive systems. Experiments showed the influence of biogenic sulfuric acid production on short term corrosion rates.
Biogenic sulfuric acid attack on different types of commercially produced concrete sewer pipes
Gutiérrez-Padilla, Ma. Guadalupe D. (author) / Bielefeldt, Angela (author) / Ovtchinnikov, Serguei (author) / Hernandez, Mark (author) / Silverstein, Joann (author)
Cement and Concrete Research ; 40 ; 293-301
2009-10-02
9 pages
Article (Journal)
Electronic Resource
English
Biogenic sulfuric acid attack on different types of commercially produced concrete sewer pipes
| Online Contents | 2010
Biogenic sulfuric acid attack on different types of commercially produced concrete sewer pipes
| British Library Online Contents | 2010
| British Library Online Contents | 2004