Download or read book Experimental and Numerical Investigation of the Flexural Behavior of RC Slabs Reinforced with BFRP Bars with and Without Basalt Fibers written by Karim Attia and published by . This book was released on 2017 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study assesses both experimentally and numerically the flexural behaviour of concrete slabs reinforced with basalt-fiber reinforced polymer (BFRP) bars cast with and without basalt fiber-reinforced concrete (BFRC). The parameters investigated included the volume fractions of the basalt fibers used in the concrete mix and the ratios of the longitudinal tensile reinforcement in the beams. First, the effect of different fiber volume fractions on the mechanical properties of concrete was assessed. This was followed by flexural tests that were conducted on eight large-scale slabs under four-point load configuration. A finite element model (FEM) was developed using ATENA® to simulate the flexural behaviour of the tested specimens. Based on the experimental results, increasing the fiber volume fraction enhanced the compressive strength and modulus of rupture of concrete. Slabs with higher dosages of fibers showed increased number of cracks and an increase in their cracking and ultimate capacities. Increasing the fiber content led to decreased ductility in the tested slabs. However, all slabs showed a ductility index that exceeded the minimum value stated by CAN/CSA-S6-06. The longitudinal reinforcement ratio had a slight effect on the cracking load. However, it governed the deflection of the tested slabs. These results were in agreement with the test results reported in the literature for slabs reinforced with steel bars and cast with conventional steel fiber-reinforced concrete (SFRC). A very good agreement between the numerical and the experimental results was obtained. The FEM predicted well the flexural behaviour of the slabs in terms of cracking loads, load-carrying capacities, deflections, and crack pattern. The Variable Engagement Model (VEM) successfully captured the behavior of the BFRC. Considering the fact that the model was initially developed for SFRC mixes, it could be concluded that BFRC has a comparable behavior to SFRC.

Download or read book Proceedings of STCCE 2022 written by Nikolai Vatin and published by Springer Nature. This book was released on 2022-09-29 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers selected contributions in the field of civil and construction engineering, as presented by international researchers and engineers at the 3rd International Scientific Conference on Socio-Technical Construction and Civil Engineering (STCCE), held in Kazan, Russia on April 21-29 2022. The book covers a wide range of topics including building constructions and structures, bridges, roads and tunnels, building materials and products, energy efficiency and thermal protection of buildings, ventilation, air conditioning, gas supply and lighting in buildings, innovative and smart technologies in construction, transport system development. The contributions, which were selected by means of a rigorous international peer-review process, highlight numerous exciting ideas that will spur novel research directions and foster multidisciplinary collaborations.

Download or read book Flexural Behavior of Basalt FRP Bar Reinforced Concrete Members with and Without Polypropylene Fiber written by Subhashini Neela and published by . This book was released on 2010 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: The thesis presents the results of an experimental investigation of the performance characteristics of concrete members reinforced with basalt fiber reinforced polymer (BFRP) bars along with polypropylene fibers. The primary objective of the research is the identification of the stress-strain relationship which ensues the determination of the load-strain behavior and maximum load capacity of the basalt FRP reinforced slabs reinforced with or without polypropylene fiber. The slab tests were designed to determine the influence of concrete strength and percentage volume of fiber on the maximum load capacity, shear strength, deflections and ductility. One of the objectives of the slab tests is also the study of the load-deflection behavior of the basalt FRP reinforced beams with and without polypropylene fiber. Another objective of the research is to check the validity of the code defined design methods for the calculation of shear strength for FRP reinforced beams made from fiber reinforced concrete. The secondary objective of this research was to study the effect of polypropylene fiber on the post-cracking strengths of beams and round determinate panels and to find the correlation between the beam and panel specimens. To achieve the objectives of this study, large number of plain and fiber reinforced concrete slab elements, and cylinders were cast with two different fiber dosages (1.0% and 0.5% volume fraction). The type of fiber used was Ferro (2.25"). All the slabs were tested under four-point bending to determine the maximum load capacity of slabs. Six fiber reinforced concrete beams and two round panels with 0.5% volume fraction of fiber were cast to determine the average residual strength (ARS) and toughness properties respectively. The standard test methods ASTM C1399 was used for testing the beams and ASTM C1550 was used for testing the round panels. The cylinder compression tests revealed that compressive strength decreased marginally with the increase in fiber dosage. The load carrying capacity of the slabs particularly in shear strength mode is found to increase with the addition of polypropylene fiber to the concrete in spite of the lower concrete strength. The concrete compressive strains and the tensile bar strains were found to increase with the addition of fiber. The deflections were decreased with the addition of fiber to the concrete. For the polypropylene fiber reinforced concrete slabs, an average of 8% difference was observed in the predicted values of maximum load obtained using the proposed model, an average of 9% difference using the Desayi and Krishnan curve for plain concrete, an average of 8% difference using the Hognestad's Model and an average of 20% difference using the ACI 440.1R method with failure loads being greater than the predicted strengths. For the slabs without polypropylene fiber, an average of 16% difference was observed in the predicted values of maximum load obtained using Desayi and Krishnan curve and an average of 18% difference was observed using Hognestad's Model and 12% difference using the ACI method with predicted strengths being much greater than the corresponding failure loads obtained from tests. The theoretical deflections determined using the ACI 400.1R method was reasonably close to the experimental deflections obtained from tests. A need for the improvement of shear strength equations given by ACI 440.1R is determined based on the comparison of experimental shear strength to the shear strength equation given by ACI 440.1R. The amount of energy stored in concrete with respect to that stored in BFRP bars is determined using the Proposed method and Hognestad's model. The evaluations show that in spite of the lower concrete strengths of the polypropylene fiber-reinforced concrete slabs compared to the plain slabs, the percentage of energy stored in concrete for the polypropylene-fiber reinforced concrete slabs is found almost more or less equal to the percentage of energy stored in concrete for the slabs without fiber. For the ductility of the slabs, the ducitility index is found to decrease with increasing reinforcement ratio. With the addition of polypropylene fiber to the slabs, the ductility of the slabs was found to be less than that for the slabs without fiber due to the lower concrete strength of the polypropylene fiber-reinforced concrete slabs. For the study of post-cracking strength, five beams and two round panels were tested. From the beam tests, the average residual strength of the polypropylene fiber reinforced concrete beams were found to be greater than the average residual strength of the beam observed from literature. From the round panel tests, the toughness of the polypropylene fiber reinforced concrete panels was found to be greater than toughness of the panels observed from the published literature. From these tests, the correlation between the flexural toughness of beam and panel specimens was also studied and compared with the published literature. It was found that the linear correlation suggested in literature for other types of fiber is equally valid for polypropylene fiber.

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 Mechcomp2 written by Antonio J.M. Ferreira and published by Società Editrice Esculapio. This book was released on 2016-05-20 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composites materials have aroused a great interest over the last few decades. Several applications of fibrous composites, functionally graded materials, laminated composites, nano-structured reinforcements, morphing structures, can be found in many engineering fields, such as aerospace, mechanical, naval and civil engineering. The necessity of lightweight structures, smart and adaptive systems, high-level strength, have led both the academic research and the manufacturing development to a recurring employment of these materials. Many journal papers and technical notes have been published extensively over the last seventy years in international scientific journals of different engineering fields. For this reason, the establishment of this second edition of Mechanics of Composites International Conference has appeared appropriate to continue what has been begun during the first edition occurred in 2014 at Stony Brook University (USA). MECHCOMP wants to be an occasion for many researchers from each part of the globe to meet and discuss about the recent advancements regarding the use of composite structures. As a proof of this event, which has taken place in Porto (Portugal), selected plenary and key-note lectures have been collected in the present book.

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 Supported Beams and Slabs written by and published by . This book was released on 1989 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geopolymer Concrete Structures with Steel and FRP Reinforcements written by Mohamed Elchalakani and published by Elsevier. This book was released on 2023-02-15 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geopolymer Concrete Structures with Steel and FRP Reinforcements: Analysis and Design focuses on structural behavior, including the aspects of compression, bending strength and combined action of GPC members, with the book's content based on published studies over the last two decades. Geopolymer concrete (GPC) structural members reinforced with FRP reinforcement have some advantages in resisting forces compared to conventional concrete or steel tubular members. Among the most important are the high strength and bending stiffness, fire and impact performance and favorable, construction ability and durability. To this end, there are no significant applications of these new structural elements worldwide, partly due to the lack of the understanding of their behavior and insufficient design provisions in different design manuals. This book, therefore, seeks to highlight their characteristics and future potential. - Provides comprehensive, up-to-date advances on Geopolymer Concrete (GPC) reinforced with steel and FRP bars and stirrups construction with a summary of over 100 papers published in the last decade - Compares the behavior and failure modes between Geopolymer Concrete (GPC) structures and Ordinary Portland Concrete (OPC) structures - Explains important concepts such as bond, confinement, fracture of stirrups and buckling of FRP bars - Includes an in-depth analysis of ultimate strength of GPC and OPC, considering governing failure modes - Presents design examples following international standards, including North America ACI 440.1R-15, Canadian CAN/CSA S806, and Australian such as AS 3600

Download or read book Effect of Basalt Fibers on the Flexural Behavior of Beams Reinforced With BFRP Bars written by Abdul Rahman M. Musif AlHafiz and published by . This book was released on 2018 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Over the last few decades, construction materials have gone through many developments aimed at improving their structural and operational properties. The implementation of fiber-reinforced polymer (FRP) bars as a replacement for conventional steel reinforcement in reinforced concrete structures has gained significant acceptance in the construction field. Basalt Fiber-Reinforced Polymer (BFRP) bars area new type of FRP reinforcement material that was recently introduced to the construction industry. The main shortcoming associated with the use of the BFRP bars in concrete beams is related to the brittle behavior of these beams. This research investigates, experimentally and analytically, the effects of using different types of fibers within the concrete mix on the flexural behavior of BFRP-reinforced concrete beams. The experimental program consisted of material evaluation and flexural testing. A total of 12 beams were prepared and cast using plain, basalt fiber, and synthetic fiber-reinforced concrete with a 40MPa target compressive strength. Flexural testing was conducted on each of the BFRP-FRC beams using a four-point loading test. Results showed a noticeable improvement in the flexural capacities of these beams due to the delay in concrete failure strain (beyond 0.003) at the compression zone, which helped the BFRP bars to attain a higher ultimate strength. Results also indicated that introducing fibers to the concrete increased curvature ductility. Furthermore, the flexural capacity of the section increased by 12% for the basalt fibers RC beams compared to 19% for specimen with synthetic fibers. The opening of cracks and their deep propagation was effectively restrained by the bridging effect of the fibers, which keeps the crack widths lower than the allowable limit of 0.7 mm at the service stage. In addition, the applicability of ACI 440-1R-06 recommendations was assessed using the results of plain concrete specimen and extended to cover fiber-reinforced concrete beams. The experimental results showed good agreement with the analytical ones obtained using ACI equations in terms of flexural capacity, crack spacing, crack widths and mid-span deflection."--Abstract.

Download or read book Proceedings of 5th International Conference on Civil Engineering and Architecture written by Thomas Kang and published by Springer Nature. This book was released on 2023-11-05 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book states that the proceedings gathers selected papers from 2022 5th International Conference on Civil Engineering and Architecture (ICCEA 2022), which was held in Hanoi, Vietnam on December 16-18, 2022. The conference is the premier forum for the presentation of new advances and research results in the fields of theoretical, experimental, and practical civil engineering and architecture. And this proceedings from the conference mainly discusses architectural design and project management, environmental protection and spatial planning, design and analysis of building materials, and structural engineering and safety. And these materials can be useful and valuable sources for researchers and professionals working in the field of civil engineering and architecture.

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 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 Experimental Investigation of the Mechanical and Creep Rupture Properties of Basalt Fiber Reinforced Polymer BFRP Bars written by Pouya Banibayat and published by . This book was released on 2011 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wide range of experimental tests was performed to determine short-term and long-term characteristics of Basalt Fiber Reinforced Polymer (BFRP) bars. Mechanical properties of BFRP bars such as tensile strength, rupture strain and modulus of elasticity were determined from short-term experimental tests. The mechanical properties then were used to calculate guaranteed properties of BFRP bars according to requirements of American and Canadian design codes. Also, a set of durability tests were performed to study creep rupture behavior of BFRP bars and to find creep rupture coefficient to be used for creep design based on the concrete design codes. After knowing the behavior of the bars, they were used as internal reinforcement of concrete beams. The beams were designed according to available design codes applying the properties obtained from primary tests. Therefore, flexural behavior of concrete beams reinforced with BFRP bars were studied experimentally and then were compared with ACI design code and strain compatibility methods. Regarding the fact that deflection dominates the design of FRP reinforced concrete beams, a new equation was derived for BFRP-RC flexural members to be used for deflection prediction of this type of beams, which could be useful adding to design codes. Finally, BFRP bars were used in design of a seawall structure in order to study the feasibility implementation of BFRP reinforced concrete seawall system instead of currently existing steel reinforce concrete seawalls.

Download or read book Proceedings of the Canadian Society of Civil Engineering Annual Conference 2022 written by Rishi Gupta and published by Springer Nature. This book was released on 2023-08-05 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the proceedings of the Annual Conference of the Canadian Society of Civil Engineering 2022. The contents of this volume focus on specialty conferences in construction, environmental, hydrotechnical, materials, structures, transportation engineering, etc. This volume will prove a valuable resource for those in academia and industry.

Download or read book Flexural Behavior of Concrete Using Basalt FRP Rebar written by Dylan Trotsek and published by . This book was released on 2017 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research is to determine if the deflection equations currently adopted in ACI 440.1r-15 and previously ACI 440.1r-06 accurately reflect the flexural behavior of an overreinforced Basalt Fiber Reinforced Polymer (BFRP) concrete beam. This was accomplished with experimental, analytical and numerical models. The experiment consisted of two beams doublyreinforced with BFRP rebar. A three-point flexural test on beams with a 30 in. clear span was performed and the deflections were recorded with a dial gauge and LVDT system. This data was compared to the equations from ACI 440.1r-06, ACI 440.1r-15, Branson's equation and a numerical model created in ANSYS Mechanical APDL. Experimental results show a stiffer beam than expected when compared to the four predictive models for deflection. This can be due to the level of over-reinforcement and the small clear-span to depth ratio. Further research should be conducted to determine the cause for the additional stiffness.

Download or read book Advanced Concretes and Their Structural Applications written by Zhigang Zhang and published by Frontiers Media SA. This book was released on 2022-09-23 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flexural Performance of Concrete Beams Reinforced with Basalt Fiber Reinforced Polymers BFRP Bars written by Mustafa Adel Muhsin Al-Mimar and published by . This book was released on 2019 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This research studies the flexural behavior of concrete beams that are reinforced longitudinally with the newly discovered Basalt Fiber Reinforced Polymers (BFRP) bars. The aim is to examine the suitability of using BFRP bars in flexure as compared to Carbon FRP bars and to validate its compatibility with the recommendations and guidelines of the current ACI440 Code. The effect of different design parameters such as BFRP reinforcement ratio, reinforcement axial stiffness and concrete compressive strength are studied. In addition, this research sheds the light on evaluating the bond-dependent coefficient (kb) value for this new type of FRP composites. Four-point loading tests were performed on a total of 14 beams (180 mm × 230 mm × 2200 mm) to achieve the objectives of this research. The loads vs mid-span deflections, cracks behavior and widths, ultimate capacities and failure modes of all 14 beams are recorded and discussed. Results confirmed that BFRP bars could be a valuable alternative to steel and CFRP bars and can be used in similar applications in the construction industry. The flexural behavior of BFRP-reinforced beams compared well with the ACI440.1R guidelines. The experimental moment capacities well-matched their theoretical counterparts using the code equations. For all the beams, the calculated bond dependent coefficients (kb) values were found to be lower than the values recommended by the ACI440.1R code which clearly indicates a strong bond between the FRP bars and concrete. The test results can be utilized as a control for a long-term durability study on the performance of BFRP bars under the harsh environment."--Abstract.