Download or read book Characterization and Modeling of Structural and Self monitoring Behavior of Fiber Reinforced Polymer Concrete written by Kallol Sett and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization and Modeling of Long term Behavior of Frp to concrete Interface in Aggressive Environments written by Shahrooz Amidi and published by . This book was released on 2015 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fiber reinforced plastics (FRP) composites have emerged as one the foremost structural materials in retrofit/rehabilitation of concrete structural members in last decades. The long-term durability of the FRP-to-concrete interface in aggressive environments places a critical role in the success of this technique. A comprehensive program using both the analytical and experimental approaches has been carried out in this study to examine the integrity and long-term durability of the FRP-to-concrete interface in presence of aggressive environments. Novel analytical solutions based on three-parameter elastic/viscoelastic foundation models have been developed for adhesively bonded joints first in this study to gain better understanding of stress transfer through FRP-to-concrete interface. These models overcome drawbacks in existing models by satisfying all boundary conditions and producing different peel stress distributions along two adhesive-adherend interfaces, making it possible to accurately predict the location of debonding initiation. These models have been verified with finite element analysis and experimental observations. Comprehensive experimental programs have been carried out to evaluate the deterioration of the FRP-to-concrete induced by moisture. In the first part, a novel environment-assisted subcritical debonding method using a wedge driving test has been proposed to examine the synergistic effect of the mechanical loads and environmental conditions on the deterioration of the FRP-to concrete interface. The deterioration of the interface induced by water has also been evaluated through measuring the residual fracture toughness of the FRP-to-concrete interface conditioned in water through two different ways. It has been found that conditioning method can have significant effect on the testing results. A novel wedge-split test has been proposed and carried out to directly measure the traction-separation law of the epoxy-concrete interfaces under mode I loading, which is not available in the literature. The potential of using silane coupling agent to improve the durability of the FRP-to-concrete interface has also been examined in the experimental program. Testing results confirm that the residual fracture toughness of the FRP-to-concrete interface attacked by moisture can be significantly increased by silane treatment.
Download or read book Self Sensing Concrete in Smart Structures written by Baoguo Han and published by Butterworth-Heinemann. This book was released on 2014-07-30 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete is the second most used building material in the world after water. The problem is that over time the material becomes weaker. As a response, researchers and designers are developing self-sensing concrete which not only increases longevity but also the strength of the material. Self-Sensing Concrete in Smart Structures provides researchers and designers with a guide to the composition, sensing mechanism, measurement, and sensing properties of self-healing concrete along with their structural applications Provides a systematic discussion of the structure of intrinsic self-sensing concrete Compositions of intrinsic self-sensing concrete and processing of intrinsic self-sensing concrete Explains the sensing mechanism, measurement, and sensing properties of intrinsic self-sensing concrete
Download or read book Smart and Multifunctional Concrete Toward Sustainable Infrastructures written by Baoguo Han and published by Springer. This book was released on 2017-06-12 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest research advances and findings in the field of smart/multifunctional concretes, focusing on the principles, design and fabrication, test and characterization, performance and mechanism, and their applications in infrastructures. It also discusses future challenges in the development and application of smart/multifunctional concretes, providing useful theory, ideas and principles, as well as insights and practical guidance for developing sustainable infrastructures. It is a valuable resource for researchers, scientists and engineers in the field of civil-engineering materials and infrastructures.
Download or read book Developments in fiber reinforced polymer FRP composites for civil engineering written by O. Gunes and published by Elsevier Inc. Chapters. This book was released on 2013-05-15 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fiber-reinforced polymer (FRP) composite materials have been increasingly used in civil engineering applications in the past two decades. Their wide ranging use, however, is still not realized due to a few fundamental issues including high material costs, relatively short history of applications and the gaps in the development of established standards. Design safety requires that all possible modes and mechanisms of failure are identified, characterized, and accounted for in the design procedures. This chapter provides a review of the failure types encountered in structural engineering applications of FRP and the preventive methods and strategies that have been developed to eliminate or delay such failures. As part of preventive measures, various non-destructive testing (NDT) and structural health monitoring (SHM) methods used for monitoring FRP applications are discussed with illustrative examples.
Download or read book Report written by Ieva Paegle and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fibre Reinforced Polymer Reinforced Concrete written by Marta Baena and published by LAP Lambert Academic Publishing. This book was released on 2012-06 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: The differences in mechanical and bond properties of Fiber Reinforced Polymers (FRP) bars when compared to those of traditional steel reinforcement for reinforced concrete (RC) structures may affect the cracking and deformability behaviour of FRP RC members. This study investigates the bond behaviour between FRP reinforcement and concrete through experimental and numerical analysis. Experimental results on pull-out tests and direct tension tests are presented and discussed. A general procedure, derived from a cracking analysis based on slip and bond stresses, is used to study the deformability of FRP RC elements under tension. The tension stiffening effect is included via experimental nonlinear bond-slip law obtained from a laboratory pull-out test. The comparison between experimental data and numerical predictions of the reinforcement strain profile along the reinforcing bar during a tensile test confirms that the bond-based model adequately reproduces the redistribution of stresses after crack formation. Because the numerical model is flexible enough to include any "user-defined" bond-slip law and variable materials' properties, a parametric study is conducted.
Download or read book Rapport written by Ieva Paegle and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization and Modeling of Fiber Reinforced Concrete for Structural Applications in Beams and Plates written by Ieva Paegle and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock Characterisation Modelling and Engineering Design Methods written by Xia-Ting Feng and published by CRC Press. This book was released on 2013-05-17 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rock Characterisation, Modelling and Engineering Design Methods contains the contributions presented at the 3rd ISRM SINOROCK Symposium (Shanghai, China, 1820 June 2013). The papers contribute to the further development of the overall rock engineering design process through the sequential linkage of the three themes of rock characterisation, model
Download or read book Structural Behavior of Reinforced Concrete Using Composite Materials written by Leonard Allen Schlosser and published by . This book was released on 2007 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examines the structural behavior of fiber reinforced polymer (FRP) systems used with reinforced concrete. The main objectives of the study were to evaluate the laboratory testing techniques, failure mechanisms, and design code recommendations for FRP laminates and FRP rebar systems.
Download or read book Characterization of Design Parameters for Fiber Reinforced Polymer Composite Reinforced Concrete Systems written by Francisco Aguiñiga Gaona and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Corrosion of steel reinforcement in concrete structures results in significant repair and rehabilitation costs. In the past several years, new fiber reinforced polymer (FRP) reinforcing bars have been introduced as an alternative to steel reinforcing bars. Several national and international organizations have recently developed standards based on preliminary test results. However, limited validation testing has been performed on the recommendations of these standards. High variability of the tensile properties, degradation of tensile strength, direct shear capacity, predicted deflections due to creep, cracking behavior of FRP-reinforced concrete flexural members, bond behavior and development length, and effects of thermal expansion on cracking of FRP reinforced concrete have all been reported, but are areas that need further investigation and validation. The objective of this study is to evaluate the characteristics of glass FRP reinforcing bars and provide recommendations on the design and construction of concrete structures containing these bar types with regard to the areas described. The recently developed ACI 440 design guidelines were analyzed and modifications proposed.
Download or read book Numerical Assessment of Reinforced Concrete Members Retrofitted with Fiber Reinforced Polymer for Resisting Blast Loading written by Graham A. Long and published by . This book was released on 2012 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of fiber reinforced polymers for the retrofit of existing structures is a common practice in blast protection. The tools used to assess the behavior of structures have become more refined allowing for precise modeling of reinforced members retrofitted with fiber reinforced polymers (FRP). However, many of these tools require extensive computational power that is often time consuming. This study aims to adapt an existing expedient dynamic analysis assessment tool in order to account for the behavior of reinforced concrete members retrofitted with FRP for flexural enhancement. FRP retrofits have been shown to increase the capacity of the members under severe loading conditions. However, the strength associated with the FRP layer is not always able to fully develop due to the debonding behavior between the two surfaces. The model will seek to capture this behavior by employing fracture mechanics along the bonded interface. The results of the modeling tool will be validated by comparing them to those of finite element analysis programs as well as available experimental test data. An additional parametric study will be conducted to evaluate the models ability to capture the bond behavior when adjusting the properties associated with the FRP.
Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A New Round Panel Test for the Characterization of Fiber Reinforced Concrete written by Fausto Minelli and published by . This book was released on 2011 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Standard test methods for determining the mechanical properties of Fiber Reinforced Concrete (FRC) are properly defined if they reproduce the actual structural behavior. Among many proposals, a round panel test seems to have all potentials to become an easy-to-use tool and, at the same time, a reliable procedure for the characterization of FRC, in terms of toughness and the post-cracking constitutive cohesive law. A new geometry for the round panel test is herein proposed and discussed in order to make the panel easier to place, handle, and test, therefore avoiding one of the major drawbacks that limit an extensive utilization of the panel test. A comparison between different test typologies for characterizing FRC is reported and discussed in the present paper, with special emphasis on the different scatter that each test produces. Tests are performed on beams as well as on panels. All specimens herein compared have the same concrete mechanical properties and fiber content. The aim of the experimental investigation is to critically discuss the advantages and disadvantages of each testing procedure, focusing on the applicability of the method and on the reliability of results toward a consistent characterization of the structural behavior. Suitable correlations among the different fracture and energy parameters defined in the standards considered are finally reported, and the results are very useful for harmonizing the available standards.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide Test Methods for Fiber reinforced Polymers FRP Composites for Reinforcing Or Strengthening Concrete and Masonry Structures written by ACI Committee 440 and published by . This book was released on 2012 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
