Behavior of Fiber Reinforced Concrete Under High Rates of Tensile Loading PDF Download

Author: Ghassan Wadih Kaddi
Publisher:
ISBN:
Category :
Languages : en
Pages : 246

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Author: Viktor Mechtcherine
Publisher: Springer
ISBN: 9402411941
Category : Technology & Engineering
Languages : en
Pages : 811

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Book Description
This is the proceedings of the 4th International Conference on Strain-Hardening Cement-Based Composites (SHCC4), that was held at the Technische Universität Dresden, Germany from 18 to 20 September 2017. The conference focused on advanced fiber-reinforced concrete materials such as strain-hardening cement-based composites (SHCC), textile-reinforced concrete (TRC) and high-performance fiber-reinforced cement-based composites (HPFRCC). All these new materials exhibit pseudo-ductile behavior resulting from the formation of multiple, fine cracks when subject to tensile loading. The use of such types of fiber-reinforced concrete could revolutionize the planning, development, dimensioning, structural and architectural design, construction of new and strengthening and repair of existing buildings and structures in many areas of application. The SHCC4 Conference was the follow-up of three previous successful international events in Stellenbosch, South Africa in 2009, Rio de Janeiro, Brazil in 2011, and Dordrecht, The Netherlands in 2014.

Author: Mostafa Hassan
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 126

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Increasing the dynamic resistance for the structures is one of the benefits of using ultra high performance concrete (UHPC) and ultra-high performance fiber reinforced concrete (UHP-FRC). This current research focuses on the ultimate compressive and tensile impact strength represented by the dynamic increase factor (DIF), the ratio between the dynamic strength and the quasi-static strength, for UHPC and steel fiber ultrahigh performance concrete (SF-UHPC) using split Hopkinson pressure bar (SHPB). The main goal is to obtain and validate the experimental test results of UHPC and UHP-FRC under high compressive and tensile strain rate range from 22-200 s -1 . Also, Achieving the experimental requirements for the dynamic testing using the SHPB for brittle materials (having stress equilibrium (SE) during the test, constant strain rate (CSR) over an effective time period, and reducing the inertial, friction, and wave dispersion effects). Different steel mono-fiber volume fraction content (0% - 4%) will be used to develop a general equation for the (DIF) for the SF-UHPC with a compressive strength exceeds 200 MPa. The quasi-static and the dynamic compression strength for UHPC and SF-UHPC with different volume fraction was reported. Digital image correlation (DIC) was used to monitor the strains of some samples using a high speed camera at 105,000 - 186,000 frames per second and thus to compliment the calculated strain values that was obtained by the SHPB equations. A three-dimensional finite element analysis has been performed using ABAQUS/Explicit to model multiimpacts on UHPC to check the frictional effect contribution to the DIF and the validity of the constitutive model in representing the behavior of UHPC. Finally, addressing the tensile static and dynamic behavior of UHP-FRC. Static tensile test according to the ASTM requirements is used while modified dynamic tensile setup of split Hopkinson tensile bar (SHTB) is used to determine the dynamic behavior and the dynamic increase factor (DIF) for UHP-FRC under high strain rates ranging from 55.3 - 156.04 s-1.

Author: Ivan Marković
Publisher: IOS Press
ISBN: 9789040726217
Category : Technology & Engineering
Languages : en
Pages : 232

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"In the research project presented in this PhD-thesis, an innovative type of fibre concrete is developed, with improved both the tensile strength and the ductility: the Hybrid-Fibre Concrete (HFC). The expression "Hybrid" refers to the "hybridisation" of fibres: short and long steel fibres were combined together in one concrete mixture. This is opposite to conventional steel fibre concretes, which contain only one type of fibre. The basic goal of combining short and long fibres is from one side to improve the tensile strength by the action of short fibres, and from the other side to improve the ductility by the action of long fibres." "In this research project, all important aspects needed for the development and application of Hybrid-Fibre Concrete have been considered. In total 15 mixtures, with different types and amounts of steel fibres were developed and tested in the fresh state (workability) as well as in the hardened state (uniaxial tensile tests, flexural tests, pullout tests of single fibres and compressive tests). A new analytical model for bridging of cracks by fibres was developed and successfully implemented for tensile softening response of HFC. At the end, the utilisation of HFC in the engineering practice was discussed, including a case-study on light prestressed long-span beams made of HFC."--BOOK JACKET.

Author: Jacques Resplendino
Publisher: John Wiley & Sons
ISBN: 1118587553
Category : Technology & Engineering
Languages : en
Pages : 678

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This book contains the proceedings of the international workshop “Designing and Building with Ultra-High Performance Fibre-Reinforced Concrete (UHPFRC): State of the Art and Development”, organized by AFGC, the French Association for Civil Engineering and French branch of fib, in Marseille (France), November 17-18, 2009. This workshop was focused on the experience of a lot of recent UHPFRC realizations. Through more than 50 papers, this book details the experience of many countries in UHPFRC construction and design, including projects from Japan, Germany, Australia, Austria, USA, Denmark, the Netherlands, Canada... and France. The projects are categorized as novel architectural solutions, new frontiers for bridges, new equipments and structural components, and extending the service life of structures. The last part presents major research results, durability and sustainability aspects, and the updated AFGC Recommendations on UHPFRC.

Author: Gustavo J. Parra-Montesinos
Publisher: Springer Science & Business Media
ISBN: 9400724365
Category : Technology & Engineering
Languages : en
Pages : 567

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Book Description
High Performance Fiber Reinforced Cement Composites (HPFRCC) represent a class of cement composites whose stress-strain response in tension undergoes strain hardening behaviour accompanied by multiple cracking, leading to a high strain prior to failure. The primary objective of this International Workshop was to provide a compendium of up-to-date information on the most recent developments and research advances in the field of High Performance Fiber Reinforced Cement Composites. Approximately 65 contributions from leading world experts are assembled in these proceedings and provide an authoritative perspective on the subject. Special topics include fresh and hardening state properties; self-compacting mixtures; mechanical behavior under compressive, tensile, and shear loading; structural applications; impact, earthquake and fire resistance; durability issues; ultra-high performance fiber reinforced concrete; and textile reinforced concrete. Target readers: graduate students, researchers, fiber producers, design engineers, material scientists.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Concrete structures may be subjected to dynamic loading during their service life. Understanding the dynamic properties of concrete structures is becoming critical because of the increased concern about the dynamic loading of both civilian and military structures, and especially, the recent increase in terrorist attacks on structures. Fiber reinforced concrete (FRC) is known to exhibit superior performance in its post-peak energy absorption capacity, (i.e., toughness) under flexural and tensile loading. However, the behavior of fiber reinforced concrete under compressive impact has not previously been investigated. In the present research, the response of fiber reinforced concrete was investigated over the full strain rate regime, from static loading to high strain rate loading, and finally to impact loading. The compressive toughness of FRC under static loading was studied using an existing Japanese standard (JSCE SF-5). Then, a test method for FRC under compressive impact loading was developed, involving the use of a high speed video camera system to measure the deformation of FRC cylinders under compressive impact. The strain rate sensitivity of FRC in both flexure and compression was also fully investigated. FRC was found to have higher strengths under impact loading (both flexural and compressive) than under static loading. The compressive toughness under impact loading increased due to the high peak load and the high strain capacity. FRC under flexural impact loading showed a greater strength improvement than under static flexure. FRC displays a much higher Dynamic Improvement Factor (DIF) under flexural impact than under compressive impact. It gave an overall higher performance under impact than under static loading. It also exhibited a higher strain rate sensitivity than plain concrete in both compression and flexure. Damage analysis, in terms of loss of strain energy, was carried out based on damage mechanics principles. Damage was found to increase with in.

Author:
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 324

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Summary report: This report presents a summary of each phase of a 4-year research program of the Strategic Highway Research Program (SHRP), which examined the mechanical behavior of high performance concretes. -- Production of high performance concrete: This report details the laboratory developmental work on producing high performance concrete for highway applications. -- Very early strength (VES)concrete: This report details the laboratory investigation of the mechanical behavior and field trials of high performance concrete for highway applications, and more specifically, VES concrete. -- High early strength (HES) concrete: The objective of this particular investigation is to obtain information on the mechanical behavior of HES concrete and to demonstrate its use under field conditions. -- Very high strength (VHS) concrete: The objective of this particular investigation is to obtain information on the mechanical behavior of VHS concrete. -- High early strength fiber reinforced concrete: This study provides an extensive data base and a summary of a comprehensive experimental investigation on the fresh state and mechanical properties of high early strength fiber reinforced concrete (HESFRC).

Author: L. B. Freund
Publisher: Cambridge University Press
ISBN: 9780521629225
Category : Mathematics
Languages : en
Pages : 592

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This volume focuses on the development and analysis of mathematical models of fracture phenomena.

Author: Alper Ilki
Publisher: Springer Nature
ISBN: 3030881660
Category : Technology & Engineering
Languages : en
Pages : 2516

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Book Description
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.