Applicability of 2360 MPa grade prestressing steel strand: Performance of material, bond, and anchorage system

Yang, Jun‐Mo; Jung, Jin‐Young; Kim, Jin-Kook

doi:10.1016/j.conbuildmat.2020.120941

Cited by 14 publications

(8 citation statements)

References 14 publications

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“…In this part, the advantage of using HSC clearly appeared. Compared to other studies, the reinforcing level of this study was lower [ 11 , 12 , 14 , 16 , 19 , 20 ]. In particular, Marchão et al [ 16 ] installed lateral reinforcements with 60 mm spacing, and the size of specimens was similar to this study.…”

Section: Resultscontrasting

confidence: 82%

“…However, SP-N-LT-3 and 4 showed satisfying strain stabilization and exceeding 1.0 Fpk. These results mean that the SP-N-LT-3 and SP-N-LT-4 specimens had the poorest performance, even smaller reinforcing and without spiral reinforcement, comparing other studies [11,12,14,16,19,20,27]. In the same way, the combination of HSC and confinement effect by lateral reinforcement (secondary confining) can be confirmed from the results of Figure 14b.…”

Section: Load-displacement and Reinforcement Strain Resultssupporting

confidence: 77%

“…In particular, Marchão et al [ 16 ] installed lateral reinforcements with 60 mm spacing, and the size of specimens was similar to this study. Yang et al [ 19 ] installed lateral reinforcements with 65 mm spacing and specimen sizes almost 2 times more greater than this study. In this aspect, HSC brings the effect of reducing the use of reinforcements.…”

Section: Resultsmentioning

confidence: 69%

“…With confinement effects from the spiral and lateral reinforcements, high-strength (upper than 2160 MPa) prestressing (PS) tendons can be applied to post-tensioning members. According to Yang et al [ 19 ], the applicability of high-strength PS tendons (2360 MPa) could be used in concrete members with confinement effect even the compressive strength of concrete was 27.6 MPa.…”

Section: Introductionmentioning

confidence: 99%

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Performance Assessment of the Post-Tensioned Anchorage Zone Using High-Strength Concrete Considering Confinement Effect

et al. 2021

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Post-tensioned anchorage zones need enough strength to resist large forces from jacking forces from prestress and need spiral reinforcement to give confinement effect. High-strength concrete (HSC) has high-strength and brings the advantage of reducing material using and simplifying reinforcing. We tested strain stabilization, load–displacement, and strain of lateral reinforcements. Specimens that used one and two lateral reinforcements without spiral reinforcement did not satisfy the strain stabilization. Load capacity also did not satisfy the condition of 1.1 times the nominal tensile strength of PS strands presented in ETAG 013. On the other hand, specimens that used three and four lateral reinforcements without spiral reinforcement satisfied the strain stabilization but did not satisfy 1.1 times the nominal tensile strength of PS strands. However, the secondary confinement effect could be confirmed from strain stabilization. In addition, the affection of HSC characteristics could be confirmed from a reinforcing level comparing other studies. The main confinement effect could be confirmed from the reinforcement strain results; there was a considerable difference between with and without spiral reinforcement at least 393 MPa. Comprehensively, main and secondary confinement effects are essential in post-tensioned anchorage zones. In addition, the performance of the anchorage zone could be increased by using HSC that the combination of high-strength and confinement effect.

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Section: Resultscontrasting

confidence: 82%

Section: Load-displacement and Reinforcement Strain Resultssupporting

confidence: 77%

Section: Resultsmentioning

confidence: 69%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance Assessment of the Post-Tensioned Anchorage Zone Using High-Strength Concrete Considering Confinement Effect

et al. 2021

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“…Different anchorage methods used for PS steel include wedge-, pressure- (rivet head and nut types), and loop-types. The wedge-type anchorage secures the PS steel using a wedge action based on the friction force between the PS steel and the anchorage system [ 6 , 7 , 8 ] and is primarily used in the Freyssinet, VSL, and CCL methods to anchor PS steel wires and strands. The pressure-type anchorage is divided into rivet head and nut-type methods, wherein the ends of the PS steel wires and rods processed as nail heads and screw threads inserted into nuts, respectively, are supported using pressure plates [ 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Anchorage Performance of Carbon Fiber-Reinforced Polymer Cables

Kim

Jung

2022

Polymers

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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.

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Enhancing Lateral Integrity of a Prestressed Concrete Box-Girder Bridge without Transverse Diaphragms: A Study on Strengthening Methods

Hou,

Yang,

et al. 2024

Int J Civ Eng

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Applicability of 2360 MPa grade prestressing steel strand: Performance of material, bond, and anchorage system

Cited by 14 publications

References 14 publications

Performance Assessment of the Post-Tensioned Anchorage Zone Using High-Strength Concrete Considering Confinement Effect

Performance Assessment of the Post-Tensioned Anchorage Zone Using High-Strength Concrete Considering Confinement Effect

Improvement of Anchorage Performance of Carbon Fiber-Reinforced Polymer Cables

Enhancing Lateral Integrity of a Prestressed Concrete Box-Girder Bridge without Transverse Diaphragms: A Study on Strengthening Methods

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