Study of Concrete Alteration in Sewer Systems by Biogenic Sulfuric Acid

Concrete used in sewer systems is exposed to a very aggressive environment. Indeed, the effluents contain organic and inorganic sulfur compounds allowing to be consumed by sulfate-reducing bacteria to form gaseous hydrogen sulfide which condenses on the emerged walls. Then, this last compound is oxidized by sulfur-oxidizing bacteria in sulfuric acid. The study of the bacterial growth medium and the characterization of degraded concrete by the action of the biogenic H2SO4 are carried out by ESEM observations associated with EDS microanalyses. The decrease of concrete properties according to the duration of biodegradation is highlighted by the structural modifications of concrete. These results are completed by liquid phase analysis allowing to perform a chemical assessments of the dissolved species in the solution. Complementary tests such as degraded thickness of the concrete specimen and weight-loss measurements improve the comprehension of phenomena which contribute to the mechanisms of degradation of concretes

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780415593168
• Corporate Authors:

  CRC Press/Balkema

  P.O. Box 447
  2300 AK Leiden,   Netherlands 
• Authors:
  • Chaussadent, T
  • Boinski, F
  • Herisson, J
  • van Hullebusch, E
• Conference:
  • Sixth International Conference on Concrete under Severe Conditions: Environment and Loading
  • Location: Merida Yucatan, Mexico
  • Date: 2010-6-7 to 2010-6-9
• Publication Date: 2010-7-5

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 577-582
• Monograph Title: Concrete under Severe Conditions: Environment and Loading. Proceedings of the 6th International Conference on Concrete Under Severe Conditions (CONSEC'10), Merida, Yucatan, Mexico, 7-9 June 2010

Subject/Index Terms

• TRT Terms: Biodeterioration; Concrete; Durability; Sewer pipe; Sewerage structures; Sulfuric acid
• Subject Areas: Materials; Pipelines; I32: Concrete;

Filing Info

• Accession Number: 01376312
• Record Type: Publication
• ISBN: 9780415593168
• Files: TRIS
• Created Date: Jul 24 2012 9:11AM