Download or read book Direct Tension Test for Characterization of Tensile Behavior of Ultra High Performance Concrete written by Zhidong Zhou and published by . This book was released on 2020 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra-high performance concrete (UHPC) is characterized by its superior strength, ductility, durability, and particularly its unique post-cracking performance in tension. Dog-bone-shaped specimens are widely used for determination of the tensile behavior of UHPC, but there is no standard test method or specimen design for the characterization of tensile behavior. In this study, an evolving strategy on designing a direct tension test (DTT) specimen is first conducted using numerical finite element analysis. Seven series of DTT specimens made of UHPC and with well-designed dimensions to avoid local stress concentration are then tested experimentally. Results indicate that the post-cracking localization within the gauge measurement region is guaranteed, and the DTT specimen is capable of fully capturing tensile stress-strain responses of UHPC. An idealized constitutive model with three linear phases is proposed to fit the experimental data and thus characterize the linear elastic, strain-hardening, and strain-softening behavior of UHPC in tension. Four tensile material parameters extracted from the experimental stress-strain curves are implemented in the idealized constitutive model from which the multi-phase responses of UHPC in tension are reconstructed. It is found that most tensile material parameters extracted from experimental stress-strain curves, including tensile strength, modulus of elasticity, and dissipated energy, increase with the increased volume fraction of steel fibers, curing age, and displacement loading rate, while the strain capacity at the first cracking remains nearly constant. The DTT specimen developed can be used effectively to characterize the tensile behavior of ductile fiber-reinforced cementitious materials.
Download or read book Direct Tension Test Experiments written by Pablo E. Bolzan and published by . This book was released on 1993 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book RILEM Technical Recommendations for the testing and use of construction materials written by Rilem and published by CRC Press. This book was released on 1994-06-23 with total page 1609 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a compilation of over 170 technical recommendations prepared by RILEM Technical Committees between 1972 and 1994. These give authoritative procedures for the testing and use of many construction materials. The book presents an authoritative source of reference for engineers, scientists and technologists involved in the develo
Download or read book Direct and Flexural Tension Test Methods for Determination of the Tensile Stress Strain Response of UHPC written by Benjamin A. Graybeal and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The tensile stress-strain response of Ultra-High Performance Concrete (UHPC) is a fundamental mechanical behavior, and knowledge of this response is necessary for appropriate use of the concrete. To date, test methods aimed as assessing this property have generally found limited application due to their complexity and impracticality when considered in terms of a commercial testing environment. A joint research effort recently completed by the U.S. Federal Highway Administration and the French IFFSTAR (formerly LCPC) has succeeded both in further advancing the field of flexure testing as well as in developing a novel, practical direct tension test method. In the case of the direct tension test, this method can be considered as a reference method as it directly reports the uniaxial tensile stress-strain response of the concrete both pre- and post-cracking without requiring the use of any complex stress or strain transformations. Additionally, the method can be completed relatively quickly through the use of commercially available mechanical testing equipment on cast or extracted specimens of cross-sectional dimension up 51 mm square. The paper and presentation will discuss the direct tension and flexure test methods, as well as results obtained from applying these tests to multiple UHPC-class materials.
Download or read book Tensile Testing 2nd Edition written by Joseph R. Davis and published by ASM International. This book was released on 2004 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Direct Tension Test Method for Ultra High Performance Fiber Reinforced Concrete written by Benjamin A. Graybeal and published by . This book was released on 2013 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustained postcracking tensile resistance is a fundamental mechanical characteristic of ultra-high-performance fiber-reinforced concrete (UHPFRC). This research program developed a simple, reliable direct tension test (DTT) method that can generate the uniaxial tensile mechanical response for both cast and extracted UHPFRC samples. The developed test method emulates DTT methods already commonly used in the mechanical testing of metals, thus addressing many of the hurdles that can hinder the implementation of new test methods. It was demonstrated to be applicable to two UHPFRCs with two different steel fiber reinforcement contents in seven total sets of specimens. The test method can facilitate the development of appropriate quality control processes for UHPFRC, the advancement of UHPFRC mixture designs, and the development of strain-based UHPFRC structural design criteria.
Download or read book Fracture Mechanics of Concrete Structures written by Folker H. Wittmann and published by . This book was released on 1995 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tensile Testing written by Patricia Han and published by ASM International(OH). This book was released on 1992 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to the common methods of testing metals, alloys, composites, ceramics, and plastics to determine their strength, ductility, and elastic/plastic deformation. For researchers, technicians, and engineers engaged in testing or designing new materials, explains the test procedures and how they ca
Download or read book Designing and Building with UHPFRC written by Jacques Resplendino and published by John Wiley & Sons. This book was released on 2013-01-29 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Highway Research written by Institution of Civil Engineers (Great Britain) and published by Thomas Telford. This book was released on 1991 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: The level of research activity in the highway sector as a whole has declined precipitously in recent decades, whilst the challenges facing US state highway agencies have escalated. As a result, a Strategic Highway Research Program - SHRP) was initiated to establish collaboration with research bodies tackling similar highway problems in countries worldwide. This collection of reports from around the world presents SHRP`s progress towards providing research-based new products from which the international highway engineering community may benefit. SHRP concentrates on six high-priority research areas: asphaltic materials; pavement performance; cement and concrete; maintenance cost effectiveness; concrete bridge component protection systems and the chemical control of snow and ice.
Download or read book Evaluation of Indirect Tensile Test IDT Procedures for Low temperature Performance of Hot Mix Asphalt written by Donald W. Christensen and published by Transportation Research Board. This book was released on 2004 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction and Research Approach -- Findings -- Interpretation, Appraisal, and Applications -- Conclusions and Recommendations -- References -- Appendixes.
Download or read book Engineered Concrete Mix Design and Test Methods written by Irving Kett and published by CRC Press. This book was released on 1999-11-29 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Romans used an early type of concrete made with natural pozzuolanic cement more than 2,000 years ago. Today, Portland Cement Concrete is the most important material of construction. Yet few books, if any, exist that offer an in-depth analysis of the mixing and testing methods of this vital hydraulic cement. Until now that is. Engineered Concret
Download or read book Repair Rejuvenation and Enhancement of Concrete written by Ravindra K. Dhir and published by Thomas Telford. This book was released on 2002 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete is a global material that underwrites commercial wellbeing and social development. There is no substitute that can be used on the same engineering scale and its sustainability, expolitation and further development are imperatives to creating and maintaing a healthy economy and environment worldwide. The pressure for change and improvement of performance is relentless and necessary. Concrete must keep evolving to satisfy the increasing demands of all its users.
Download or read book Concrete Manual written by United States. Bureau of Reclamation and published by . This book was released on 1955 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Significance of Tests and Properties of Concrete and Concrete making Materials written by Joseph F. Lamond and published by ASTM International. This book was released on 2006 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Concrete written by Adam M. Neville and published by Thomas Telford. This book was released on 2006-05-26 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: A book on concrete that looks at a problem or an issue, and discusses the underlying scientific and technological aspects, including broader contextual topics. It explains how closely we can determine the water - cement ratio of hardened concrete and considers whether we can verify the age of cracks by measuring carbonation.
Download or read book Measurement of Average Tensile Force for Individual Steel Fiber Using New Direct Tension Test written by Luke R. Pinkerton and published by . This book was released on 2016 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of steel-fiber reinforcement as an alternative to conventional reinforcement of various concrete structures has been limited in the construction industry. This is because of the fact that, unlike traditional reinforcement, the performance characterization of steel-fiber concrete is not standardized, because the fibers are distributed throughout the concrete section. Whereas direct tensile resistance is the performance measurement required for design, the steel-fiber industry has yet to actively employ direct tensile testing of steel fibers. The tensile response of steel-fiber-reinforced concrete has been investigated. The primary purpose of this paper is to present a robust new direct tension test method. This method is able to determine the uniaxial tensile response of steel-fiber-reinforced concrete. The method uses a three-dimensional "hourglass"-shaped tapered specimen. This paper also focuses on developing a practical method to determine the average tensile force per fiber.
