Corrosion Stress Strain Behavior Of Small Size Plain Concrete

Introduction: It is widely known that many older reinforced concrete columns may suffer from an inadequate amount of transverse steel reinforcement providing insignificant confining pressure to the concrete core. The seismic performance of these columns may thus be very poor due to their insufficient ductility or low concrete strength. Because the FRP composites owe some of the favorable properties such as high strength-to-weight ratio, the use of FRP composites is nowadays become more common in the construction industry as a confining material for concrete to enhance the strength and ductility capacities of existing RC columns. To achieve a proper and safe design of FRP-confined rectangular RC columns, it is necessary to properly understand and model the axial stress-strain behavior of FRP-confined concrete. The axial cyclic stress-strain behavior of FRP-confined concrete is of particular importance in the seismic design of existing RC columns. Extensive experimental and analytical studies have been conducted to investigate the monotonic axial stress-strain behavior of small size plain concrete cylinders confined with FRP laminates (e.g., Lam and Teng 2002; Ilki and Kumbasar 2002; Lam and Teng 2003; Berthet et al. 2005; Almusallam 2007; Cui and Sheikh 2010; Wu and Zhou 2010). According to the literature, relatively few studies have included rectangular unreinforced concrete columns tested under axial monotonic loads (e.g., Youssef 2003; Rousakis et al. 2007); In contrast,Show MoreRelatedA Report On The Axial Stress Strain Behavior1034 Words   |  5 Pagesreinforced concrete columns, including particularly those RC columns constructed prior to the 1970s, may suffer from an inadequate amount of transverse steel reinforcement providing insignificant confining pressure to the concrete core, and hence, the seismic performance of such columns may be very poor due to their insufficient ductility or low concrete strength. Since the FRP composites owe some of the fav orable properties such as high strength-to-weight ratio and excellent corrosion resistanceRead MoreDetermination of Pull Out Capacity of Steel Bar in Concrete7577 Words   |  31 PagesCHAPTER 1 INTRODUCTION 1.1 Introduction of Research Steel-reinforced concrete is a widely used structural material. The effectiveness of the steel reinforcement depends on the bond between the steel reinforcing bar and the concrete. Reinforced concrete  is a composite material in which  concrete s  relatively low  tensile strength  and  ductility  are counteracted by the inclusion of reinforcement having higher tensile strength and ductility. The reinforcement is usually, though not necessarilyRead MoreLaboratory Evaluation Of Fibre Reinforced Soil9047 Words   |  37 Pagesengineering project. The concept of earth reinforcement with the help of fibrous materials is an ancient technique and has been demonstrated abundantly in nature by animals, birds and the action of tree roots. This fibrous reinforcement resists tensile stress developed within the soil mass thereby restricting shear failure. In this investigation, Recron 3S polypropylene fibre manufactured by Reliance India Ltd., has been used. Polypropylene Fibres are engineered micro fibers with a unique â€Å"Triangular†Read MoreFoundations Of The Building Transfer4083 Words   |  17 Pagesengineering properties of the soil at regular intervals, claim every 2 meters. Based within this deport, engineers designing the structure could decide at what depth of soil to deliver the foundations, the type of foundations they ought to provide, and the size of the foundations. Every once in some time, engineers will find fill for a site. This occurs when humans have previously dug in the earth there, and then filled it the government financial aid. This happens if a quarry was dug or maybe a buildingRead More_x000C_Introduction to Statistics and Data Analysis355457 Words   |  1422 PagesAnalysis Process 1.1 Three Reasons to Study Statistics 1 1.2 The Nature and Role of Variability 4 1.3 Statistics and the Data Analysis Process 7 1.4 Types of Data and Some Simple Graphical Displays 12 Activity 1.1 Head Sizes: Understanding Variability 22 Activity 1.2 Estimating Sizes 23 Activity 1.3 A Meaningful Paragraph 24 1 2 Collecting Data Sensibly 2.2 Sampling 32 27 2.1 Statistical Studies: Observation and Experimentation 27 2.3 Simple Comparative Experiments 42 2.4 More on ExperimentalRead MoreOrganisational Theory230255 Words   |  922 Pageswhich originated in Frankfurt and which is discussed in Chapter 8, is called critical theory. This approach overtly rejects managementorientated organization theory as both misconceived and unethical because it is only concerned with the problems of a small minority of people in organizations and therefore is inherently undemocratic. Instead, critical theorists aim to reveal the structures of oppression and injustice that are taken to be part of organizing in capitalist society, whose main beneficiaries