BIOLOGICAL CORROSION OF CONCRETE STRUCTURES /IN FRENCH/

AN INVESTIGATION INTO THE BACTERIOLOGICAL CAUSES OF THE EXTENSIVE DETERIORATION OF THE CONCRETE USED IN A PURIFICATION PLANT TREATING MAINLY URBAN SEWAGE IS DESCRIBED. THE DETERMINATION OF THE TYPES OF MICRO- ORGANISMS OF THE SULPHUR CYCLE WAS THE MAIN CONCERN. IDENTIFICATION TESTS SHOWED THAT THE BACTERIA INVOLVED WERE SULPHATE-REDUCING BACTERIA. THE BACTERIOLOGICAL DETERIORATION OF THE CONCRETE COULD THEN BE EXPLAINED BY THE TRANSFORMATION OF THE MINERAL AND ORGANIC SULPHUREOUS BY-PRODUCTS OF THE SEWAGE INTO HYDROGEN SULPHIDE UNDER THE INFLUENCE OF THE ABOVE BACTERIA. THIS GAS, UNDER THE EFFECT OF OTHER BACTERIA NOT YET IDENTIFIED WOULD OXIDIZE AND PRODUCE SULPHURIC ACID WHICH, IN TURN, WOULD ATTACK THE LIME AND CALCIUM CARBONATE CONTAINED IN THE CONCRETE. VARIOUS METHODS OF PREVENTING THIS TYPE OF BACTERIOLOGICAL CORROSION ARE MENTIONED. /LCPC/RRL/

  • Supplemental Notes:
    • Vol 17, No 2, PP 71-77, 3 FIG, 1 TAB, 18 REF
  • Corporate Authors:

    Corros. Trait. Protec, Paris /Fr

    ,    
  • Authors:
    • Brebion, G
    • Cabridenc, R
  • Publication Date: 1967-2

Subject/Index Terms

Filing Info

  • Accession Number: 00213040
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Jun 29 1971 12:00AM