Cure Behavior of Epoxies Used for CFRP Repair of Pipelines

This paper presents the results of a laboratory testing program on the curing behavior of one impregnating epoxy (Tyfo S) and one thickened epoxy (Tyfo WS) that are most commonly used in carbon fiber reinforced polymer (CFRP) repair of pipelines, including progression of cure at various temperatures; relative humidities and relationships between the degree of cure and properties such as hardness, glass transition temperature, and long-term water absorption of these epoxies; and tensile properties of the CFRP. Based on the tests performed, curing schedules can be established to achieve a minimum degree of cure of 85%, which is typically used in practice for newly installed CFRP liners prior to refilling of pipelines. Quality assurance procedures are proposed for verification of the degree of cure achieved in the field, including a project example where the proposed procedures have been used.

• Record URL:
  https://doi.org/10.1061/9780784413692.082
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784413692
• Supplemental Notes:
  • © 2014 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Engindeniz, Murat
  • Ojdrovic, Rasko P
  • Arnold, Scott
  • Jimenez, Tomas
• Conference:
  • Pipelines 2014
  • Location: Portland Oregon, United States
  • Date: 2014-8-3 to 2014-8-6
• Publication Date: 2014-7

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 908-919
• Monograph Title: Pipelines 2014: From Underground to the Forefront of Innovation and Sustainability

Subject/Index Terms

• TRT Terms: Carbon fibers; Curing and setting agents; Epoxides; Fiber reinforced polymers; Humidity; Pipelines; Quality assurance; Repairing; Tensile strength
• Subject Areas: Maintenance and Preservation; Pipelines; I60: Maintenance;

Filing Info

• Accession Number: 01536353
• Record Type: Publication
• ISBN: 9780784413692
• Files: TRIS, ASCE
• Created Date: Aug 28 2014 9:12AM