By Vistasp M. Karbhari
Rehabilitation of Pipelines utilizing Fibre-reinforced Polymer (FRP) Composites offers info in this severe component to commercial and civil infrastructures, additionally exploring the actual demanding situations that exist within the video display and service of pipeline platforms.
This ebook stories key concerns and strategies during this vital sector, together with normal concerns equivalent to the diversity of thoughts utilizing FRP composites and the way they evaluate with using metal sleeves. furthermore, the publication discusses specific concepts, corresponding to sleeve fix, patching, and overwrap systems.
- Reviews key matters and methods within the use of fiber bolstered polymer (FRP) composites as a versatile and least expensive capability to fix getting older, corroded, or broken pipelines
- Examines basic matters, together with the diversity of options utilizing FRP composites and the way they examine with using metal sleeves
- Discusses specific options resembling sleeve fix, patching, and overwrap systems
Read or Download Rehabilitation of Pipelines Using Fiber-reinforced Polymer PDF
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Additional resources for Rehabilitation of Pipelines Using Fiber-reinforced Polymer
Sample text
The owner’s inspector’s approval of the work as satisfactory at the hold points should be a requirement for the construction work to proceed. The owner’s inspector should also document the inspection at the hold point and his or her approval. The owner’s inspector should examine the surface for cleanliness after the pipe segment(s) have been cleaned and the surface has been broom cleaned, vacuumed, or otherwise rendered free of dust, debris, and moisture. The owner’s inspector inspects the concrete inner core and steel substrate to which CFRP will be adhered after the surfaces have been prepared in order to establish that the surface profile conforms to the project specification and Section.
Dehumidifying and raising the temperature of the air is an acceptable means of improving the environment. The ambient temperature conditions dictate the rate of cure for the resins used in the system. The air is to be dehumidified to avoid moisture present on the substrate during installation. The ambient air temperature during the time of application cannot be below 40 F or above 100 F. The CFRP system is to have a minimum of 85% cure before the pipe is returned to service. Durability of CFRP is affected by the degree of cure of the CFRP.
Specifications that protect owners and engineers, ensuring properly tested CFRP materials are installed, require a valid ICC report as part of the bid submission. More extensive durability testing beyond the 10,000-h exposure tests required by ICC AC125 is available for selected CFRP materials. , 2010). In this study, an inspection of CFRP-lined PCCP was performed approximately 8 years after the installation of the CFRP lining system. The visual and sounding inspection indicated no damage in the form for delaminations, bubbles, cracks, or edge lifting.
