CONTINUOUS MEMBRANES TO SUPPLEMENT AND IMPROVE CEMENT LININGS FOR PIPE

SO LONG AS THEY REMAIN UNDAMAGED, CEMENT LININGS ARE A SATISFACTORY, LOW-COST METHOD OF PROTECTING PIPES AGAINST CORROSION. TO TEST THE EFFECT OF DAMAGING THE LINING, LABORATORY TESTS WERE CONDUCTED WITH A CLEANED STEEL SURFACE COATED WITH A MEMBRANE MATERIAL. MORTAR MIX WAS APPLIED OVER THE MEMBRANE AND CURED, THE EDGES WERE SEALED WITH EPOXY, THE CEMENT WAS CRACKED, AND THE SPECIMEN WAS IMMERSED IN AERATED 5% BRINE FOR PERIODS RANGING FROM 21 DAYS TO A YEAR. THE RESULTS SHOW THAT CORROSION TAKES PLACES IN VARYING DEGREES BENEATH CRACKED CEMENT LININGS AND CAN BE PREVENTED THROUGH USE OF A MOISTURE BARRIER BETWEEN CEMENT AND STEEL. THE MOISTURE BARRIER MEMBRANE IS HIGHLY DESIRABLE WHEN IT IS NECESSARY TO USE CORROSION- SUSCEPTIBLE, ELECTRICALLY RESISTANT WELD PIPE WITH CEMENT LININGS.

  • Authors:
    • Carlberg, B L
    • Matthews, R R
  • Publication Date: 1972-8

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Filing Info

  • Accession Number: 00217235
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 13 1972 12:00AM