Performance Assessment of the Post-Tensioned Anchorage Zone Using High-Strength Concrete Considering Confinement Effect
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 t...
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doaj-ce28df056f3d4f8fba45e0c8f476c2b82021-04-02T23:00:57ZengMDPI AGMaterials1996-19442021-04-01141748174810.3390/ma14071748Performance Assessment of the Post-Tensioned Anchorage Zone Using High-Strength Concrete Considering Confinement EffectJun Suk Lee0Byeong Hun Woo1Jae-Suk Ryou2Jee-Sang Kim3Concrete Laboratory, Department of Civil and Environmental Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 05510, KoreaConcrete Laboratory, Department of Civil and Environmental Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 05510, KoreaConcrete Laboratory, Department of Civil and Environmental Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 05510, KoreaConcrete Laboratory, Department of Civil and Architectural Engineering, Seokyeong University, 124, Seogyeong-ro, Seongbuk-gu, Seoul 02713, KoreaPost-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.https://www.mdpi.com/1996-1944/14/7/1748post-tensionanchorage zonereinforcementhigh-strength concreteconfinement effect |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jun Suk Lee Byeong Hun Woo Jae-Suk Ryou Jee-Sang Kim |
spellingShingle |
Jun Suk Lee Byeong Hun Woo Jae-Suk Ryou Jee-Sang Kim Performance Assessment of the Post-Tensioned Anchorage Zone Using High-Strength Concrete Considering Confinement Effect Materials post-tension anchorage zone reinforcement high-strength concrete confinement effect |
author_facet |
Jun Suk Lee Byeong Hun Woo Jae-Suk Ryou Jee-Sang Kim |
author_sort |
Jun Suk Lee |
title |
Performance Assessment of the Post-Tensioned Anchorage Zone Using High-Strength Concrete Considering Confinement Effect |
title_short |
Performance Assessment of the Post-Tensioned Anchorage Zone Using High-Strength Concrete Considering Confinement Effect |
title_full |
Performance Assessment of the Post-Tensioned Anchorage Zone Using High-Strength Concrete Considering Confinement Effect |
title_fullStr |
Performance Assessment of the Post-Tensioned Anchorage Zone Using High-Strength Concrete Considering Confinement Effect |
title_full_unstemmed |
Performance Assessment of the Post-Tensioned Anchorage Zone Using High-Strength Concrete Considering Confinement Effect |
title_sort |
performance assessment of the post-tensioned anchorage zone using high-strength concrete considering confinement effect |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2021-04-01 |
description |
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. |
topic |
post-tension anchorage zone reinforcement high-strength concrete confinement effect |
url |
https://www.mdpi.com/1996-1944/14/7/1748 |
work_keys_str_mv |
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