PROTECTIVE COATINGS FOR BURIED PIPE
PROTECTIVE COATINGS ARE DISCUSSED THAT MAY BE APPLIED TO THE EXTERNAL SURFACE OF METAL PIPE. IN ADDITION TO THE FIBERGLASS-REINFORCED AND PAPER-WRAPPED HOT-APPLIED COLD-TAR AND ASPHALT COAT USED WHICH HAVE BEEN STANDARD FOR MANY YEARS, NEW DEVELOPMENTS FROM THE CHEMICAL END OF INDUSTRY ARE NOW AVAILABLE. THEY INCLUDE THE PRESSURE-SENSITIVE POLYVINYL AND POLYETHYLENE TAPES, THE COAL TAR PITCH-EPOXY RESINS, THE POLYVINYL, POLYETHYLENE AND POLYPROPYLENE EXTRUSIONS, AND THE EPOXY RESINS. THE FOLLOWING PROPERTIES OF PROTECTIVE COATINGS ARE DISCUSSED: (1) HIGH ADHESION, (2) TOUGHNESS, (3) GOOD ELECTRICAL PROPERTIES, (4) CHEMICAL RESISTANCE, (5) WIDE TEMPERATURE OPERATING RANGE, (6) RESISTANCE TO BACTERIA, FUNGUS AND VERMIN, (7) EASY APPLICATION FOR COATINGS TO BE APPLIED IN THE FIELD, AND (8) LONG-TERM STABILITY OF ALL PROPERTIES. THERE APPEARS TO BE A DEFINITE TREND AWAY FROM THE APPLICATION OF PROTECTIVE COATINGS IN THE FIELD DUE TO THE HIGH COST AND DIFFICULTY OF APPLICATION. COATING REQUIREMENTS SHOULD BE THOROUGHLY EXAMINED WITH THE IDEA OF OBTAINING THE MOST ECONOMICAL AND EFFICIENT COATING FOR THE PARTICULAR JOB.
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Supplemental Notes:
- Vol 69, BulL 609, PP 190-192
- Publication Date: 1967-11
Media Info
Subject/Index Terms
- TRT Terms: Adhesion; Coal tars; Costs; Electrical properties; Epoxy resins; Ethylene resins; Metals; Pipe; Polypropylene; Polyvinyl acetate; Protective coatings; Stability (Mechanics); Tubing; Underground structures
- Uncontrolled Terms: Polyethylene
- Old TRIS Terms: Metal tubing; Polyvinyl acetal resins
- Subject Areas: Bridges and other structures; Finance; Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00216370
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 10 1994 12:00AM