Studies on Strengthening of RCC Short Columns With Composite Wrap Using Alternative Materials Subjected to Axial Load

Abstract

The increasing urbanization and rising building loads have placed significant newlinedemands on the load-bearing capacity of columns, which are critical structural elements in newlinebuildings. The load-carrying capacity of these columns is often limited due to higher loads newlinefrom additional floors, necessitating the use of strengthening techniques. Various methods, newlinesuch as jacketing, FRP wrapping, and bonding with steel plates, have been employed globally newlineto enhance column performance. Furthermore, the depletion of natural aggregates has led to newlinethe exploration of alternative materials in the concrete industry. These alternatives, including newlinetire rubber, glass waste, plastic, and recycled aggregates, help in reducing environmental newlineimpact while promoting sustainability. Secondary cementitious materials such as fly ash, newlineGGBS, and silica fume also play a vital role in producing self-compacting concrete (SCC), newlinewhich improves both mechanical and durability properties. newlineThis research focuses on exploring the impact of composite wrapping techniques on newlinethe structural behavior of reinforced self-compacting concrete columns made with alternative newlinefine aggregates and cement partially replaced by fly ash. The aim is to assess the effectiveness newlineof composite wrapping using glass and jute fibers in improving the performance of columns newlineand compare these results with conventional concrete columns of similar grade. The study newlineintegrates experimental and analytical investigations to evaluate the load-carrying capacity, newlinedeformation, and failure loads of these composite-wrapped columns, with results compared newlineusing finite element analysis (ANSYS). newlineThe thesis is divided into several chapters: newlineChapter one provides an overview of the need for column strengthening due to issues such as newlineoverloading, poor construction practices, and seismic activity. It emphasizes the significance newlineof using alternative materials and techniques such as fiber-reinforced polymers (FRP) and selfcompacting newlineconcrete (SCC) for enhancing structural integrity. newlineChapter two covers existin