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Structural Assessment Of D Regions Affected By Alkali Silica Reaction Delayed Ettringite Formation
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Book Synopsis Structural Assessment of D-Regions Affected by Alkali-Silica Reaction/Delayed Ettringite Formation by : Shih-Hsiang Liu
Download or read book Structural Assessment of D-Regions Affected by Alkali-Silica Reaction/Delayed Ettringite Formation written by Shih-Hsiang Liu and published by . This book was released on 2013 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: A combined experimental and analytical program was conducted to investigate the effects of Alkali-Silica Reaction (ASR) and Delayed Ettringite Formation (DEF) on D-regions in reinforced concrete (RC) bridge bents. Four large-scale RC specimens, which represent cantilever and straddle bents in Texas bridges in each specimen, were constructed. The first specimen represented the unexposed control specimen, while the other three were conditioned in the field with supplemental watering to promote ASR/DEF and served as the exposed specimens. The control and two exposed specimens with various levels of ASR/DEF, after eight months and two years of field conditioning, were load tested to failure. The last specimen remains in field with additional exposure to promote ASR/DEF and will be load tested in future studies. The width and length of preload-induced cracks and developing cracks that initiated in the exposed specimens and grew over time, indicating concrete expansion due to ASR/DEF mechanisms, were measured. Petrographic analysis results of concrete cores extracted from the exposed specimens after their load testing confirmed the formation of ASR gel and minimum accumulation of ettringite. The structural testing results showed that the failure mechanism in all three tested specimens was due to a brittle shear failure in the beam-column joint. However, slightly greater stiffness, strength, and ductility were observed in the exposed specimens as a result of the activation of the reinforcing steel in the specimens due to the expansion of the concrete primarily from ASR, which effectively prestressed and confined the core concrete. Sectional analysis and Strut-and-Tie Modeling (STM) of the experimental specimens were applied. Three-dimensional nonlinear Finite Element Analyses (FEA) were also conducted to numerically simulate the overall structural performance, internal response, and out-of-plane behavior of the experimental specimens. The effects of varying constitutive relations of the concrete in tension on models of the specimens were compared with the measured experimental response. A method to mimic ASR/DEF effects on exposed specimens was proposed and incorporated into the FEA approach. As a result, forces that prestress and confine the core concrete were effectively applied through the reinforcing steel prior to subsequent structural loading. The three-dimensional FEA approach was able to simulate the out-of-plane behavior of the beam-column joint and the proposed method yielded comparable results with the measured overall and internal behavior of specimens. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/148175
Book Synopsis Alkali-Aggregate Reaction in Concrete by : Marc-Andre Berube
Download or read book Alkali-Aggregate Reaction in Concrete written by Marc-Andre Berube and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diagnostic of Concrete Samples Affected by Internal Swelling Reactions by : António C. Azevedo
Download or read book Diagnostic of Concrete Samples Affected by Internal Swelling Reactions written by António C. Azevedo and published by Springer Nature. This book was released on 2021-06-18 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a complete diagnosis of concrete samples collected from a pile cap block of residential buildings affected by internal swelling reactions. Covering an extensive laboratory campaign to evaluate the transport properties of concrete samples, as well as their physical and chemical composition using advanced techniques to analyse cores extracted from real buildings that have concrete elements affected by internal swelling reactions (ISR). It features several rehabilitation procedures, pile caps repair and rehabilitation design, executed using strengthening procedures to provide the complete restoration of the structural integrity of the element deteriorated. These rehabilitation procedures proved to be a good solution to retrofit pile cap deteriorated by expansions due to internal swelling reactions of concrete. The book also offers a systematic review of the current state of knowledge and it is a valuable resource for scientists, students, and practitioners in various scientific and engineering disciplines, namely, civil and materials engineering, as well as and other interested parties.
Book Synopsis High-temperature effects on alkali-silica reaction and delayed ettringite formation by : Jorge Miguel Miralles Cardona
Download or read book High-temperature effects on alkali-silica reaction and delayed ettringite formation written by Jorge Miguel Miralles Cardona and published by . This book was released on 2001 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete by : Leandro F. M. Sanchez
Download or read book Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete written by Leandro F. M. Sanchez and published by Springer Nature. This book was released on with total page 701 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laboratory and field investigations of alkali-silica reaction and its interaction with delayed ettringite formation by : Joseph Donal Hall
Download or read book Laboratory and field investigations of alkali-silica reaction and its interaction with delayed ettringite formation written by Joseph Donal Hall and published by . This book was released on 2003 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bridge Maintenance, Safety, Management, Resilience and Sustainability by : Fabio Biondini
Download or read book Bridge Maintenance, Safety, Management, Resilience and Sustainability written by Fabio Biondini and published by CRC Press. This book was released on 2012-06-21 with total page 4119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge Maintenance, Safety, Management, Resilience and Sustainability contains the lectures and papers presented at The Sixth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2012), held in Stresa, Lake Maggiore, Italy, 8-12 July, 2012. This volume consists of a book of extended abstracts (800 pp) Extensive collection of revised expert papers on recent advances in bridge maintenance, safety, management and life-cycle performance, representing a major contribution to the knowledge base of all areas of the field.
Book Synopsis Laboratory Testing and Investigations of Delayed Ettringite Formation by : Thanos Drimalas
Download or read book Laboratory Testing and Investigations of Delayed Ettringite Formation written by Thanos Drimalas and published by . This book was released on 2004 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Delayed ettringite formation (DEF) in concrete structures has recently damaged structures in the state of Texas, which has caused the state to investigate this new type of premature concrete deterioration. The research described in this thesis is part of a comprehensive research project, TxDOT Project 4085. The work described in this thesis focuses primarily on DEF, but also investigates the interplay between DEF and alkali-silica reaction. Significant accelerated laboratory testing was performed, and parallel exposure blocks were cast to evaluate realistic exposure conditions. The research included materials from throughout the state of Texas. The effects of material composition and dosage on DEF were investigated, and several mitigation measures were identified that can prevent DEF-induced expansion, even when concrete is heated above 70 °C. The key findings from this research have been implemented by TxDOT in new state specifications to prevent DEF in prestressed concrete elements.
Book Synopsis Structural Effects of Alkali-silica Reaction by :
Download or read book Structural Effects of Alkali-silica Reaction written by and published by . This book was released on 1992 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Failure, Distress and Repair of Concrete Structures by : Norb Delatte
Download or read book Failure, Distress and Repair of Concrete Structures written by Norb Delatte and published by Elsevier. This book was released on 2009-10-26 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding and recognising failure mechanisms in concrete is a fundamental pre-requisite to determining the type of repair, or whether a repair is feasible. This title provides a review of concrete deterioration and damage, as well as looking at the problem of defects in concrete. It also discusses condition assessment and repair techniques. Part one discusses failure mechanisms in concrete and covers topics such as causes and mechanisms of deterioration in reinforced concrete, types of damage in concrete structures, types and causes of cracking and condition assessment of concrete structures. Part two reviews the repair of concrete structures with coverage of themes such as standards and guidelines for repairing concrete structures, methods of crack repair, repair materials, bonded concrete overlays, repairing and retrofitting concrete structures with fiber-reinforced polymers, patching deteriorated concrete structures and durability of repaired concrete. With its distinguished editor and international team of contributors, Failure and repair of concrete structures is a standard reference for civil engineers, architects and anyone working in the construction sector, as well as those concerned with ensuring the safety of concrete structures. Provides a review of concrete deterioration and damage Discusses condition assessment and repair techniques, standards and guidelines
Book Synopsis Masonry: Building Pathologies and Design by : João M. P. Q. Delgado
Download or read book Masonry: Building Pathologies and Design written by João M. P. Q. Delgado and published by Springer Nature. This book was released on 2021-09-16 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a collection of recent research works related to blast resistant design, building pathologies, seismic coating, bottle-shaped concrete struts, delayed ettringite formation and waterproofing. It features eight chapters on building pathologies as well as a detailed set of references and suggestions for further reading. Offering a systematic review of the current state of knowledge, it is a valuable resource for scientists, students, practitioners, and lecturers in various scientific and engineering disciplines, including civil and materials engineering, as well as and other interested parties.
Book Synopsis Cement and Concrete Chemistry by : Wieslaw Kurdowski
Download or read book Cement and Concrete Chemistry written by Wieslaw Kurdowski and published by Springer Science & Business. This book was released on 2014-04-24 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph describes cement clinker formation. It covers multicomponent systems, clinker phase structures and their reactions with water, hydrate composition and structure, as well as their physical properties. The mineral additions to cement are described as are their influence on cement-paste properties. Special cements are also discussed. The microstructure of concrete is then presented, and special emphasis is given to the role of the interfacial transition zone, and the corrosion processes in the light of cement-phase composition, mineral additions and w/c ratio. The admixtures' role in modern concrete technology is described with an emphasis on superplasticizer chemistry and its cement-paste rheological modification mechanism. Cement with atypical properties, such as calcium aluminate, white, low energy and expansive cements are characterized. The last part of the book is devoted to special types of concrete such as self compacting and to reactive powders.
Book Synopsis The Effect of Lightweight Fine Aggregate on Alkali-silica Reaction and Delayed Ettringite Formation by :
Download or read book The Effect of Lightweight Fine Aggregate on Alkali-silica Reaction and Delayed Ettringite Formation written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Alkali-Silica Reaction in Concrete by : R N Swamy
Download or read book The Alkali-Silica Reaction in Concrete written by R N Swamy and published by CRC Press. This book was released on 1991-09-01 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the fundamental causes and spectrum effects of ASR. It considers he advances that have been made in our understanding of this problem throughout the world.
Book Synopsis Compressive Strength of Concrete by : Pavel Krivenko
Download or read book Compressive Strength of Concrete written by Pavel Krivenko and published by BoD – Books on Demand. This book was released on 2020-03-11 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete made using mineral cements, the raw materials which on earth are practically endless, is known as one of the oldest building materials and during the last decades of the twentieth century has become a dominant building material for general use. At the same time, the requirements of the quality of concrete and its performance properties, in particular compressive strength, durability, economical efficiency, and low negative impact of its manufacture on the environment have not yet been completely met. Bearing these requirements in mind, researchers and engineers worldwide are working on how to satisfy these requirements. This book has been written by researchers and experts in the field and provides the state of the art on recent progress achieved on the properties of concrete, including concrete in which industrial by-products are utilized. The book is dedicated to graduate students, researchers, and practicing engineers in related fields.
Book Synopsis Alkali Activated Materials by : John L. Provis
Download or read book Alkali Activated Materials written by John L. Provis and published by Springer Science & Business Media. This book was released on 2013-11-19 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a State of the Art Report resulting from the work of RILEM Technical Committee 224-AAM in the period 2007-2013. The Report summarises research to date in the area of alkali-activated binders and concretes, with a particular focus on the following areas: binder design and characterisation, durability testing, commercialisation, standardisation, and providing a historical context for this rapidly-growing research field.
Book Synopsis Regeneration of the Built Environment from a Circular Economy Perspective by : Stefano Della Torre
Download or read book Regeneration of the Built Environment from a Circular Economy Perspective written by Stefano Della Torre and published by Springer Nature. This book was released on 2019-01-01 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book explores the strategic importance and advantages of adopting multidisciplinary and multiscalar approaches of inquiry and intervention with respect to the built environment, based on principles of sustainability and circular economy strategies. A series of key challenges are considered in depth from a multidisciplinary perspective, spanning engineering, architecture, and regional and urban economics. These challenges include strategies to relaunch socioeconomic development through regenerative processes, the regeneration of urban spaces from the perspective of resilience, the development and deployment of innovative products and processes in the construction sector in order to comply more fully with the principles of sustainability and circularity, and the development of multiscale approaches to enhance the performance of both the existing building stock and new buildings. The book offers a rich selection of conceptual, empirical, methodological, technical, and case study/project-based research. It will be of value for all who have an interest in regeneration of the built environment from a circular economy perspective.
