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Computers and Concrete Volume 33, Number 1, January 2024 , pages 41-53 DOI: https://doi.org/10.12989/cac.2024.33.1.041 |
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Infilled steel tubes as reinforcement in lightweight concrete columns: An experimental investigation and image processing analysis |
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N.Divyah, R.Prakash and S.Srividhya
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| Abstract | ||
| Under constant and cyclic axial compression, square composite short columns reinforced with Self Compacting Concrete (SCC) added with scrap rubber infilled inside steel tubes and with different types of concrete were cast and tested. The test is carried out to find the effectiveness of utilizing an aggregate manufactured from industrial waste and to address the problems associated with the need for alternative reinforcements along with waste management. The main testing parameters are the type of concrete, the effect of fiber inclusion, and the significance of rubber-infilled steel tubes. The failure modes of the columns and axial load-displacement curves of the steel tube-reinforced columns were all thoroughly investigated. According to the test results, all specimens failed due to compression failure with a longitudinal crack along the loading axis. The fiber-reinforced column specimens demonstrated improved ductility and energy absorption. In comparison to the normal-weight concrete columns, the lightweight concrete columns significantly improved the axial load-carrying capacity. The addition of basalt fiber to the columns significantly increased the yield stress and ultimate stress to 9.21%. The corresponding displacement at yield load and ultimate load was reduced to 10.36% and 28.79%, respectively. The precision of volumetric information regarding the obtained crack quantification, aggregates, and the fiber in concrete is studied in detail through image processing using MATLAB environment. | ||
| Key Words | ||
| axial deformation; ductility; energy absorption; image processing; infilled steel tube column; squash load | ||
| Address | ||
| N.Divyah: Department of Civil Engineering, PSG Institute of Technology and Applied Research, Coimbatore, 641 062 Tamilnadu, India R.Prakash: Department of Civil Engineering, Government College of Engineering, Tirunelveli 627007, India S.Srividhya: Department of Civil Engineering, Builders Engineering College, Kangeyam, Tirupur 638108, India | ||