Improvement of Anchorage Performance of Carbon Fiber-Reinforced Polymer Cables

Prestressed concrete composed of steel materials is increasingly used in various social infrastructures, such as bridges (cables), nuclear containment structures, liquefied natural gas (LNG) tanks, and structural reinforcements. This study aimed to substitute the steel in bridge cables with fiber-re...

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Bibliographic Details
Published in:Polymers 2022-03, Vol.14 (6), p.1239
Main Authors: Kim, Tae-Kyun, Jung, Woo-Tai
Format: Article
Language:English
Subjects:
Anchorages
Bridge maintenance
Cables
Carbon fiber reinforced concretes
Carbon fiber reinforced plastics
Carbon fibers
Composite materials
Concrete
Containment vessels
Corrosion
Damage prevention
Fiber reinforced polymers
Geometry
Graphite
Investigations
Liquefied natural gas
Load
Manufacturing
Mechanical properties
Metal fatigue
Methods
Performance degradation
Polyesters
Prestressed concrete
Prestressing steels
Reinforcing steels
Resins
Surface treatment
Tendons
Tensile tests
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Summary:Prestressed concrete composed of steel materials is increasingly used in various social infrastructures, such as bridges (cables), nuclear containment structures, liquefied natural gas (LNG) tanks, and structural reinforcements. This study aimed to substitute the steel in bridge cables with fiber-reinforced polymers (FRPs) to prevent the damage caused by the performance degradation of corroded prestressed steel. An optimized single-anchorage system was derived by applying multiple variables, such as the surface treatment, number of insert layers, and sleeve processing companies, to improve the maximum load and bonding with the anchorage system sleeve using the carbon FRP (CFRP) cable. The B-L-4 specimen (sleeve specifications of company B, longitudinal surface treatment, and four insert layers) was determined to be the optimized single-anchorage system. When the tensile test was conducted after applying the optimized single-anchorage system to the three- and seven-multi-anchorage systems, the tensile performances of B-L-4 were 100 and 95% of the one-multi-anchorage system, respectively. Considering that the problems associated with the construction of three- and seven-multi-anchorage systems have been addressed, these systems can be applied to actual bridges in the future, and can significantly benefit their maintenance.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym14061239