Download or read book Testing Protocol Material Specifications Long term Durability Analysis in Accelerated Environments and Prediction Modeling of Basalt Fiber Reinforced Polymer BFRP Bars written by Srichand Telikapalli and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge infrastructure in coastal areas is deteriorating at an accelerated pace due to increased traffic and aggressive environments. Traditional black steel reinforcement in bridges is corroding due to exposure to saline environments. This leads to structural failure which may cause personal damage, and financial losses. To overcome the problem with corrosion, Fiber Reinforced Polymer (FRP) reinforcement bars are used in civil structures as a replacement to the steel rebars because of their noncorrosive properties. FRP rebars are a product of composite materials which are made from combining fibers and resin matrices. In the U.S., many projects have focused on aramid, carbon, and glass FRPs for applications in civil infrastructure for the past two decades. Research on basalt FRP rebars was abandoned in early 1930s due to historical reasons. However, due to its superior characteristics (strength performance, corrosion resistance, temperature range, and durability) basalt rebars have gained a renewed interest in recent years. Due to these properties, Basalt FRP bars are capable of replacing steel rebars, and glass fiber rebars in bridge engineering applications. Though BFRP rebars have superior material properties, a number of BFRP products with inferior quality are available in the global market as material standards are not available. Standardizing the BFRP rebar products helps in eliminating the products of inferior quality and protecting the general public safety. Because rebars are intended to be used in marine structures which are high in pH and have high saline concentrations, a wide range of raw materials and rebar products should be exposed to several combinations of aggressive conditions and their long-term strength and durability characteristics should be experimentally studied. Experimental evaluations on the fiber, sizing, and resin level are needed to promote the standardizationprocess of BFRP Rebars. In this research, the properties of basalt fiber reinforced polymer (BFRP) rebars, and the raw materials used in manufacture of rebars were studied. This involved analysis of physical, mechanical, and durability properties of rebars and raw materials. In addition, standard specifications for the use of these rebars in concrete structures were proposed. In the first part of this study, physical and mechanical properties of rebars and their components were studied by conducting preliminary tests on them, which included measurement of the cross-sectional properties, fiber content, moisture absorption properties, XRF analysis, glass transition temperature, tensile strength, transverse, and apparent horizontal shear strength, and bond strength of rebars. Tensile strength of resin and XRF analysis on fibers were also conducted to study the initial material properties. It was found that the virgin properties all tested rebars have satised and surpassed the existing criteria for GFRP rebars by at least 120%. For the second part of this research, a test matrix was developed to understand the durability properties of the rebars and the resin matrices. Rebars and components were then exposed in the aggressive environments at 60°C for 300d. A series of physical and mechanical tests were performed on rebars and components as well as various chemical tests on exposure environments were conducted to study the property changes. It was noticed that the sizing on the fibers and resin matrix played a key role in protecting the rebars from degradation in aggressive environments. A long-term prediction model which can predict strength retention of FRP bars in any type of aggressive environment and any exposure temperature was developed based on fib Bulletin 40 model with additional degradation factors addressing different Cl concentrations in the exposure environments and exposure time. The results showed that tested BFRP rebars outperformed GFRP rebars in all aspects and the results showed that BFRP rebars can be used in future marine structures. While it was suggested that specispecifications for these rebars be inline with GFRP rebar specifications, with additional data, the specfiications for these rebars can be set higher than GFRP rebar specifications.
Download or read book Durability Study of Basalt Fiber reinforced Bars Exposed to Harsh Environments written by Mohamad Mazen Alrifai and published by . This book was released on 2019 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In this research, the durability of Basalt Fiber Reinforced Polymers (BFRP) bars of 10mm diameter is studied after direct exposure to severe conditions. The main aim is to investigate the degradation performance of the microstructure and tensile properties of these BFRP bars under accelerated conditionings that simulate the concrete’s environment. A set of BFRP bars was wrapped by concrete prisms that were immersed in tap water. Another set of BFRP bars was exposed to alkaline solution. In concrete-wrapped and alkaline exposures, temperatures of 20oC, 40oC, 60oC were applied in isolated tanks for durations of 2880, 5760, and 8760 hours. The experimental program included Uniaxial Tensile Tests, Scanning Electron Microscopy (SEM), Water Absorption, Differential Scanning Calorimetry Analysis (DSC), Fourier Transform Infrared Spectrometry (FTIR), Matrix Digestion, and Fiber Volume Fraction Analysis. This combination of tests was selected to validate the tensile strength values. The output of these tests is a comprehensive microstructural characterization and tensile behavior evaluation before and after exposure to harsh environments. As a result, the effect of temperature was more distinct than the effect of exposure periods. Higher temperatures and greater durations in a harsh environment tend to cause impairments on the structural and microstructural levels. These impairments are represented by tensile loss, debonding, matrix loss, moisture impregnation, and micro-cracking at the fiber-matrix interface. Maximum tensile loss, moisture loss, and matrix loss were recorded to be 29%, 1%, 29.8%, respectively, for the samples that were conditioned for 9 months at 60oC in alkaline environment"--Abstract.
Download or read book Composites for Construction written by Lawrence C. Bank and published by John Wiley & Sons. This book was released on 2006-07-21 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first textbook on the design of FRP for structural engineering applications Composites for Construction is a one-of-a-kind guide to understanding fiber-reinforced polymers (FRP) and designing and retrofitting structures with FRP. Written and organized like traditional textbooks on steel, concrete, and wood design, it demystifies FRP composites and demonstrates how both new and retrofit construction projects can especially benefit from these materials, such as offshore and waterfront structures, bridges, parking garages, cooling towers, and industrial buildings. The code-based design guidelines featured in this book allow for demonstrated applications to immediately be implemented in the real world. Covered codes and design guidelines include ACI 440, ASCE Structural Plastics Design Manual, EUROCOMP Design Code, AASHTO Specifications, and manufacturer-published design guides. Procedures are provided to the structural designer on how to use this combination of code-like documents to design with FRP profiles. In four convenient sections, Composites for Construction covers: * An introduction to FRP applications, products and properties, and to the methods of obtaining the characteristic properties of FRP materials for use in structural design * The design of concrete structural members reinforced with FRP reinforcing bars * Design of FRP strengthening systems such as strips, sheets, and fabrics for upgrading the strength and ductility of reinforced concrete structural members * The design of trusses and frames made entirely of FRP structural profiles produced by the pultrusion process
Download or read book Guide for the Design and Construction of Concrete Reinforced with Fiber Reinforced Polymer Bars written by ACI Committee 440 and published by . This book was released on 2003 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reinforced Concrete with FRP Bars written by Antonio Nanni and published by CRC Press. This book was released on 2014-03-05 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corrosion-resistant, electromagnetic transparent and lightweight fiber-reinforced polymers (FRPs) are accepted as valid alternatives to steel in concrete reinforcement. Reinforced Concrete with FRP Bars: Mechanics and Design, a technical guide based on the authors more than 30 years of collective experience, provides principles, algorithms, and pr
Download or read book Durability Study on the Bond Strength of Basalt Fiber Reinforced Polymer BFRP Bars written by Ahmed T. H. Altalmas and published by . This book was released on 2014 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In the last few decades, Fiber-Reinforced Polymers (FRP) bars have emerged as alternatives to conventional steel reinforcing bars to overcome the corrosion problem found in reinforced concrete structures. Numerous studies have been conducted in order to evaluate the bond between FRP bars and concrete. Recently, a new type of FRP bars made of basalt fibers (BFRP) has emerged as an alternative to conventional glass-made FRP (GFRP) bars. BFRP bars have not yet been considered in international design codes due to lack of research on their structural performance. This research investigates the bond durability of BFRP bars to concrete. BFRP bars with two different surfaces were used in this study namely: sand-coated and indented surfaces. The bond durability for the GFRP bars was also investigated for comparison purpose. The test parameters included the FRP bar material, the surface coating, the environmental exposure, and the exposure duration. More than 100 pullout specimens were prepared and exposed to different environmental conditions over three durations: 30, 60, and 90 days. The accelerated harsh exposures included acid, alkaline, ocean water, tap water, high temperature, and high temperature followed by ocean or tap water environments. At the end of each exposure, pullout specimens were tested to study the bond performance of all specimens in terms of their bond strength, bond-slip curves, adhesion stress, and failure modes and mechanisms. Unconditioned (control) specimens were also tested to measure the bond between the bars and the concrete. Effects of each environmental exposure on the bond performance of the specimens were discussed. In general, BFRP bars showed bond behavior comparable to that of its GFRP counterparts. The well-known Eligehausen, Popov, and Bertero (BPE) model that describes the ascending branch of the bond-slip relationship of conventional steel was assessed and calibrated for the unconditioned and conditioned BFRP and GFRP bars. Design values of the bond coefficient [alpha] that defines the behavior of the ascending branch were recommended for the investigated exposures."--Abstract.
Download or read book An Approach to Improved Durability Tests for Building Materials and Components written by Geoffrey Frohnsdorff and published by . This book was released on 1980 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fiber reinforced plastic FRP Reinforcement for Concrete Structures written by Antonio Nanni and published by Elsevier Publishing Company. This book was released on 1993 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of fiber reinforced plastic (FRP) composites for prestressed and non-prestressed concrete reinforcement has developed into a technology with serious and substantial claims for the advancement of construction materials and methods. Research and development is now occurring worldwide. The 20 papers in this volume make a further contribution in advancing knowledge and acceptance of FRP composites for concrete reinforcement. The articles are divided into three parts. Part I introduces FRP reinforcement for concrete structures and describes general material properties and manufacturing meth.
Download or read book Failure Mechanisms in Polymer Matrix Composites written by Paul Robinson and published by Woodhead Publishing Limited. This book was released on 2016-06 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer matrix composites are replacing materials such as metals in industries such as aerospace, automotive and civil engineering. As composites are relatively new materials, more information on the potential risk of failure is needed to ensure safe design. This book focuses on three main types of failure: impact damage, delamination and fatigue. Chapters in Parts 1-4 describe the main types of failure mechanism and discuss testing methods for predicting failure in composites. Chapters in Parts 5 and 6 discuss typical kinds of in-service failure and their implications for industry.
Download or read book Materials Design and Manufacturing for Sustainable Environment written by Santhakumar Mohan and published by Springer Nature. This book was released on 2021-02-06 with total page 909 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the select proceedings of the International Conference on Materials, Design and Manufacturing for Sustainable Environment (ICMDMSE 2020). The primary focus is on emerging materials and cutting-edge manufacturing technologies for sustainable environment. The book covers a wide range of topics such as advanced materials, vibration, tribology, finite element method (FEM), heat transfer, fluid mechanics, energy engineering, additive manufacturing, robotics and automation, automobile engineering, industry 4.0, MEMS and nanotechnology, optimization techniques, condition monitoring, and new paradigms in technology management. Contents of this book will be useful to students, researchers, and practitioners alike.
Download or read book Non Metallic FRP Reinforcement for Concrete Structures written by L. Taerwe and published by CRC Press. This book was released on 2004-06-02 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dealing with a wide range of non-metallic materials, this book opens up possibilities of lighter, more durable structures. With contributions from leading international researchers and design engineers, it provides a complete overview of current knowledge on the subject.
Download or read book 10th International Conference on FRP Composites in Civil Engineering written by Alper Ilki and published by Springer Nature. This book was released on 2021-11-26 with total page 2516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume highlights the latest advances, innovations, and applications in the field of FRP composites and structures, as presented by leading international researchers and engineers at the 10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering (CICE), held in Istanbul, Turkey on December 8-10, 2021. It covers a diverse range of topics such as All FRP structures; Bond and interfacial stresses; Concrete-filled FRP tubular members; Concrete structures reinforced or pre-stressed with FRP; Confinement; Design issues/guidelines; Durability and long-term performance; Fire, impact and blast loading; FRP as internal reinforcement; Hybrid structures of FRP and other materials; Materials and products; Seismic retrofit of structures; Strengthening of concrete, steel, masonry and timber structures; and Testing. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster multidisciplinary collaboration among different specialists.
Download or read book Life Cycle Analysis and Assessment in Civil Engineering Towards an Integrated Vision written by Robby Caspeele and published by CRC Press. This book was released on 2018-10-15 with total page 5111 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the papers presented at IALCCE2018, the Sixth International Symposium on Life-Cycle Civil Engineering (IALCCE2018), held in Ghent, Belgium, October 28-31, 2018. It consists of a book of extended abstracts and a USB device with full papers including the Fazlur R. Khan lecture, 8 keynote lectures, and 390 technical papers from all over the world. Contributions relate to design, inspection, assessment, maintenance or optimization in the framework of life-cycle analysis of civil engineering structures and infrastructure systems. Life-cycle aspects that are developed and discussed range from structural safety and durability to sustainability, serviceability, robustness and resilience. Applications relate to buildings, bridges and viaducts, highways and runways, tunnels and underground structures, off-shore and marine structures, dams and hydraulic structures, prefabricated design, infrastructure systems, etc. During the IALCCE2018 conference a particular focus is put on the cross-fertilization between different sub-areas of expertise and the development of an overall vision for life-cycle analysis in civil engineering. The aim of the editors is to provide a valuable source of cutting edge information for anyone interested in life-cycle analysis and assessment in civil engineering, including researchers, practising engineers, consultants, contractors, decision makers and representatives from local authorities.
Download or read book Hybrid Natural Fiber Composites written by Anish Khan and published by Woodhead Publishing. This book was released on 2021-01-21 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on natural fiber composites is an emerging area in the field of polymer science with tremendous growth potential for commercialization. Hybrid Natural Fiber Composites: Material Formulations, Processing, Characterization, Properties, and Engineering Applications provides updated information on all the important classes of natural fibers and their composites that can be used for a broad range of engineering applications. Leading researchers from industry, academia, government, and private research institutions from across the globe have contributed to this highly application-oriented book. The chapters showcase cutting-edge research discussing the current status, key trends, future directions, and opportunities. Focusing on the current state of the art, the authors aim to demonstrate the future potential of these materials in a broad range of demanding engineering applications. This book will act as a one-stop reference resource for academic and industrial researchers working in R&D departments involved in designing composite materials for semi structural engineering applications. - Presents comprehensive information on the properties of hybrid natural fiber composites that demonstrate their ability to improve the hydrophobic nature of natural fiber composites - Reviews recent developments in the research and development of hybrid natural fiber composites in various engineering applications - Focuses on modern technologies and illustrates how hybrid natural fiber composites can be used as alternatives in structural components subjected to severe conditions
Download or read book Proceedings of the 6th International Conference and Exhibition on Sustainable Energy and Advanced Materials written by Ubaidillah Sabino and published by Springer Nature. This book was released on 2020-06-01 with total page 813 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the proceedings of the 6th International Conference and Exhibition on Sustainable Energy and Advanced Materials (ICE-SEAM 2019), held on 16–17 October 2019 in Surakarta, Indonesia. It focuses on two relatively broad areas – advanced materials and sustainable energy – and a diverse range of subtopics: Advanced Materials and Related Technologies: Liquid Crystals, Semiconductors, Superconductors, Optics, Lasers, Sensors, Mesoporous Materials, Nanomaterials, Smart Ferrous Materials, Amorphous Materials, Crystalline Materials, Biomaterials, Metamaterials, Composites, Polymers, Design, Analysis, Development, Manufacturing, Processing and Testing for Advanced Materials. Sustainable Energy and Related Technologies: Energy Management, Storage, Conservation, Industrial Energy Efficiency, Energy-Efficient Buildings, Energy-Efficient Traffic Systems, Energy Distribution, Energy Modeling, Hybrid and Integrated Energy Systems, Fossil Energy, Nuclear Energy, Bioenergy, Biogas, Biomass Geothermal Power, Non-Fossil Energies, Wind Energy, Hydropower, Solar Photovoltaic, Fuel Cells, Electrification, and Electrical Power Systems and Controls.
Download or read book Textile Reinforced Cement Composites written by Jan Wastiels and published by MDPI. This book was released on 2020-03-05 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Special Issue presents the latest advances in the field of Textile-Reinforced Cement Composites, including Textile-Reinforced Concrete (TRC), Textile-Reinforced Mortar (TRM), Fabric-Reinforced Cementitious Matrix (FRCM), etc. These composite materials distinguish themselves from other fibre-reinforced concrete materials by their strain-hardening behaviour under tensile loading. This Special Issue is composed of 14 papers covering new insights in structural and material engineering. The papers include investigations on the level of the fibre reinforcement system as well as on the level of the composites, investigating their impact and fatigue behaviour, durability and fire behaviour. Both the strengthening of existing structures and the development of new structural systems such as lightweight sandwich systems are presented, and analysis and design methods are discussed. This Special Issue demonstrates the broadness and intensity of the ongoing advancements in the field of Textile-Reinforced Cement composites and the importance of several future research directions.
Download or read book Accelerated Ageing Tests and Long term Prediction Models for Durability of FRP Bars in Concrete written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
