Abstract
Partial confinement can provide sufficient reinforcement to enhance the compressive strength and ductility of concrete with lesser confining material. This paper presents the results of an axial compression test conducted on eighteen plain concrete cylinders of 150 mm diameter and 300 mm height partially confined with a Stainless-Steel Wire Mesh (SSWM) strip of different widths. The study included two specimens without wrapping, two fully wrapped specimens, and others wrapped with two SSWM strips of varying widths at both the ends of concrete cylinder. The strain on SSWM up to failure is measured to understand the effectiveness of lateral confining pressure on the behaviour of concrete cylinders. The peak axial compressive strength and corresponding strain of unconfined and SSWM-confined concrete cylinders are compared. The result shows a significant increase in peak confined compressive stress as compared to an unconfined concrete cylinder. However, the confinement efficiency is reduced when the height of the unconfined region exceeds the diameter of the cylinder, and significant strain localisation is detected within the unwrapped region. Based on experimental investigation, a confinement coefficient is suggested for a partial wrapping of SSWM on the concrete cylinder.
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- ReceivedUntil the next stage: 66 days
- RevisedUntil the next stage: 2 days
- AcceptedUntil the next stage: 12 days
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About the authors
Paresh Patel
Dr Paresh Patel joined the Civil Engineering Department in 1997. Currently, he is Professor of the Department. He has about four years of professional experience pertaining to structural design of industrial buildings and multi storied residential buildings prior to joining the Department. He served as Head of Civil Engineering Department from July 2013 to June 2019. He has guided more than 70 major projects of MTech (CASAD) programme and has supervised three PhD scholars. Presently, two PhD scholars are working under his guidance. Dr Patel has published a number of papers at national and international conferences and journals. He is actively involved in consultancy projects related to structural engineering carried out by the department. He is a recipient of Modern Construction Co. Medal 1990, ISTE Charutar Vidya Mandal Vallabh Vidyanagar Gujarat Award for the Best Engineering College Teacher in Gujarat State 2008 and E P Nicolaides Prize of Institution of Engineers (India) 2017. He has carried out research projects funded by Institution of Engineers (India), GUJCOST, DST and ISRO-RESPOND programme. He has authored a book on “Mechanics of Solids”. He is a life member of various professional societies. His areas of interest include finite element analysis, seismic analysis and design of various types of structures, high performance computing in structural engineering, progressive collapse analysis, design of precast building and retrofitting of structures.
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May be shared and adapted, provided appropriate credit is given. Copyright © 2024 Sunil Raiyani, Paresh Patel, S Suriya Prakash.
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