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Bond Load-Slip Behaviors of Strand Assemblies-in-Cement
A series of laboratory pulled-out tests is performed to elucidate the effect on ultimate bond load/stress for strands-in-cement under different conditions. The bond load-slip curves are drawn and discussed. In addition, this study establishes and explores the typical curve of bond stress-slip with various parameters. The seven-wire strands are commonly used for constructing anchors in Taiwan, this study adopts the strand assemblies and cement paste to produce specimens. The pulled out tests are carried out via 500 kN Material Test System. Parametric studies include a variety of strand quantity, cement compressive strength (water/cement ratio, specimen age) and bond length. This study applied the Hyperbolic Model to simulate the compressive strength of cement cubic with different age, the estimated results are in good agreement with those tests results. The pulled-out tests of strand assemblies-in-cement reveal that the ultimate pulled load increase with increases in cement compressive strength, bond length and quantity of strand. Ultimate bond stress increases with an increase in cement compressive strength; however, a longer bond length and more strands obtain a smaller ultimate bond stress. The test results depict that the bond stress-slip curve can be divided into five stages: micro-slip section, slip section, crack generation section, lowering section and residual section.
Bond Load-Slip Behaviors of Strand Assemblies-in-Cement
A series of laboratory pulled-out tests is performed to elucidate the effect on ultimate bond load/stress for strands-in-cement under different conditions. The bond load-slip curves are drawn and discussed. In addition, this study establishes and explores the typical curve of bond stress-slip with various parameters. The seven-wire strands are commonly used for constructing anchors in Taiwan, this study adopts the strand assemblies and cement paste to produce specimens. The pulled out tests are carried out via 500 kN Material Test System. Parametric studies include a variety of strand quantity, cement compressive strength (water/cement ratio, specimen age) and bond length. This study applied the Hyperbolic Model to simulate the compressive strength of cement cubic with different age, the estimated results are in good agreement with those tests results. The pulled-out tests of strand assemblies-in-cement reveal that the ultimate pulled load increase with increases in cement compressive strength, bond length and quantity of strand. Ultimate bond stress increases with an increase in cement compressive strength; however, a longer bond length and more strands obtain a smaller ultimate bond stress. The test results depict that the bond stress-slip curve can be divided into five stages: micro-slip section, slip section, crack generation section, lowering section and residual section.
Bond Load-Slip Behaviors of Strand Assemblies-in-Cement
Lecture Notes in Civil Engineering
Kang, Thomas (editor) / Lee, Youngjin (editor) / Hsu, Shih-Tsung (author) / Shih, Chiao-Hsin (author) / Chen, Ke-Ting (author) / Yen, Yung-Chen (author) / Chang, Wei-Cheng (author) / Li, Chung-Pin (author)
Proceedings of 2021 4th International Conference on Civil Engineering and Architecture ; Chapter: 24 ; 271-279
2022-01-31
9 pages
Article/Chapter (Book)
Electronic Resource
English
Bond Load-Slip Behaviors of Strand Assemblies-in-Cement
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