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

Media Info

• Pagination: p. 33-6
• Serial:
  • Materials Protection and Performance
  • Volume: 11
  • Issue Number: 8
  • Publisher: National Association of Corrosion Engineers

Subject/Index Terms

• TRT Terms: Cement; Cement mortars; Corrosion protection; Linings; Moisture barriers; Pipe; Preservation
• Uncontrolled Terms: Membranes; Pipe lining
• Old TRIS Terms: Liners; Membranes (Biology); Pipe protection
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

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