Development Of High Volume Fly Ash Concrete In Australia

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Development of High Volume Fly Ash Concrete in Australia

Author : Vute Sirivivatnanon
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (681 download)

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Book Synopsis Development of High Volume Fly Ash Concrete in Australia by : Vute Sirivivatnanon

Download or read book Development of High Volume Fly Ash Concrete in Australia written by Vute Sirivivatnanon and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes the development of high volume fly ash (HVFA) concrete for structural concrete and pavements. Trials carried out at Pacific Power's Mount Piper Power Station project in New South Wales is also described. Concretes with high fly ash content (40% and above by weight of the total binder fractions) were designed for structural grades. The workability, mechanical and long-term volume stability properties were evaluated. It was found that HVFA concrete could be designed having fresh concrete properties similar to plain cement concrete with the exception of setting times. HVFA concretes with characteristic compressive strength up to 5O MPa could be produced. For concretes of similar strength grades, it was found that the flexural strength and elastic modulus properties of HVFA concretes were similar to plain cement concretes. HVFA concretes were found to have similar or lower drying shrinkage at 56 days when compared to companion plain cement concretes of equivalent grades. Creep strains were also improved significantly in HVFA concretes. The setting times were increased by one to SLY hours depending on the type of cement and percentage of fly ash used. The concretes also developed considerable strength after 24 hours to withstand loading from normal construction activities. Trial production and placing of these concretes for apron slabs and road pavements was carried out at the Pacific Power's Mount Piper Power Station. It was found that HVFA concrete could be produced and placed successfully through normal concreting practices including pumping. A 5 to 6% air content could also be entrained with normal air entraining agent. The finished pavement looked similar to that placed using conventional concrete. While severe retardation in setting was found in the last two trials, it was subsequently found that it was caused by the incompatibility between the water reducing agent and the binder system. Long-term performance of these concretes are being monitored.

Applications of High Volume Fly Ash Concretes

Author : Vute Sirivivatnanon
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (681 download)

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Book Synopsis Applications of High Volume Fly Ash Concretes by : Vute Sirivivatnanon

Download or read book Applications of High Volume Fly Ash Concretes written by Vute Sirivivatnanon and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: While the use of small proportion of fly ash in the binder of concrete is well understood and accepted in many countries, the technology relating to the use of high volume (40% by weight or more of binder) of fly ash in structural concrete is a more recent development. This paper discusses the development of high volume fly ash (HVFA) concrete in Australia and overseas with specific emphasis on its potential applications. Mix design method and data are described. It has been found that HVFA concrete can be designed within the constraints of the present Australian code of practice to give equivalent 28 day compressive strength to plain cement concrete. However, the volume stability and durability properties of HVFA concretes have been found to be significantly better than the equivalent plain cement concrete. With its inherent increased cohesiveness and long term properties, potential applications are identified and discussed with respect to the specific properties.

High-performance, High-volume Fly Ash Concrete

Author : V. Mohan Malhotra
Publisher :
ISBN 13 : 9780973150728
Total Pages : 120 pages
Book Rating : 4.1/5 (57 download)

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Book Synopsis High-performance, High-volume Fly Ash Concrete by : V. Mohan Malhotra

Download or read book High-performance, High-volume Fly Ash Concrete written by V. Mohan Malhotra and published by . This book was released on 2005 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Civil Engineering Handbook

Author : W.F. Chen
Publisher : CRC Press
ISBN 13 : 1420041215
Total Pages : 2898 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis The Civil Engineering Handbook by : W.F. Chen

Download or read book The Civil Engineering Handbook written by W.F. Chen and published by CRC Press. This book was released on 2002-08-29 with total page 2898 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1995, the award-winning Civil Engineering Handbook soon became known as the field's definitive reference. To retain its standing as a complete, authoritative resource, the editors have incorporated into this edition the many changes in techniques, tools, and materials that over the last seven years have found their way into civil

High Volume Fly Ash Concrete Behavior in Structural Design

Author : Ahmad Fuzail Hashmi
Publisher :
ISBN 13 : 9785032986553
Total Pages : 0 pages
Book Rating : 4.9/5 (865 download)

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Book Synopsis High Volume Fly Ash Concrete Behavior in Structural Design by : Ahmad Fuzail Hashmi

Download or read book High Volume Fly Ash Concrete Behavior in Structural Design written by Ahmad Fuzail Hashmi and published by . This book was released on 2023-03-13 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Volume Fly Ash Concrete (HVFA) is a type of concrete that incorporates a large volume of fly ash as a partial replacement for Portland cement. Fly ash is a by-product of coal combustion that is collected from power plants, and it has pozzolanic properties that can enhance the durability, workability, and strength of concrete. In HVFA, the replacement of Portland cement with fly ash typically ranges from 50% to 70% by mass, resulting in a reduction in the amount of cement required and a decrease in the carbon footprint of the concrete. However, this high volume of fly ash can also affect the behavior of the concrete in structural design. One of the main challenges in designing with HVFA concrete is the potential for delayed strength development. Fly ash reacts slowly with water, and this can result in a longer period for the concrete to reach its desired strength. This delayed strength development must be taken into account in the design process to ensure that the concrete can support the intended loads. Additionally, the use of HVFA can also affect the workability and setting time of the concrete. The high amount of fly ash can make the mixtures more viscous and harder to place, and it can also result in longer setting times. This can impact the construction schedule and require adjustments to be made in the mix design and placement procedures. On the other hand, HVFA can also provide benefits in structural design. The lower heat of hydration and reduced shrinkage characteristics of HVFA can minimize the potential for cracking and improve the long-term durability of the concrete. Furthermore, the use of fly ash can contribute to the overall sustainability of the project by reducing the carbon footprint and diverting waste from landfills. Overall, the behavior of HVFA concrete in structural design requires careful consideration of its unique properties and potential challenges. With proper mix design and construction practices, HVFA can provide a durable and sustainable option for concrete structures.

Development of High Volume Fly Ash Concrete for Pavements

Author : P. Nelson
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (681 download)

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Book Synopsis Development of High Volume Fly Ash Concrete for Pavements by : P. Nelson

Download or read book Development of High Volume Fly Ash Concrete for Pavements written by P. Nelson and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fly Ash in Concrete

Author : R C Joshi
Publisher : CRC Press
ISBN 13 : 9789056995805
Total Pages : 290 pages
Book Rating : 4.9/5 (958 download)

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Book Synopsis Fly Ash in Concrete by : R C Joshi

Download or read book Fly Ash in Concrete written by R C Joshi and published by CRC Press. This book was released on 1997-11-13 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since it was first recognized as a mineral admixture for concrete in the 1930's, fly ash has been the subject of worldwide study as researchers work to maximize its economical and environmental benefits. In recent years, investigations have focused on the physical, chemical and mineralogical characteristics of fly ash and their specific correlation to the performance of concrete. This book collects the latest results from these various studies and offers a complete review of the advantages of fly ash as an admixture in concrete, including strength development and improved chemical resistance and durability. A review of the current international standards on fly ash usage is provided, in addition to an extensive reference list and a complete survey of various other fly ash products, such as bricks, mineral wool and gypsum wall boards, as well as the use of fly ash in waste management.

Properties and Applications of High Volume Fly Ash Concretes

Author : H. T. Cao
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (681 download)

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Book Synopsis Properties and Applications of High Volume Fly Ash Concretes by : H. T. Cao

Download or read book Properties and Applications of High Volume Fly Ash Concretes written by H. T. Cao and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural grade concretes with high volume of fly ash (HVFA) have been developed in Australia since 1991. These are concretes with fly ash making up to 50 percent by weight of the total binder. In this paper, mix design method and mix design data for HVFA concretes and their mechanical properties are given. The advantages of HVFA concretes in terms of improved volume stability and durability compared with portland cement concretes of equivalent 28-day compressive strength are discussed. The suitability of these type of concretes are highlighted with respect to their properties and construction demands. Example of applications in Australia and overseas are given.

INCEPTION OF HIGH-VOLUME FLY ASH WITH HYBRID FIBRE BASED CONCRETE : A PERFORMER

Author : Dr. SS. Asadi & Dr. Vennam Swathi
Publisher : Laxmi Book Publication
ISBN 13 : 1304796221
Total Pages : 107 pages
Book Rating : 4.3/5 (47 download)

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Book Synopsis INCEPTION OF HIGH-VOLUME FLY ASH WITH HYBRID FIBRE BASED CONCRETE : A PERFORMER by : Dr. SS. Asadi & Dr. Vennam Swathi

Download or read book INCEPTION OF HIGH-VOLUME FLY ASH WITH HYBRID FIBRE BASED CONCRETE : A PERFORMER written by Dr. SS. Asadi & Dr. Vennam Swathi and published by Laxmi Book Publication. This book was released on 2024-01-20 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: When infrastructure is built quickly, development occurs. Concrete is the go-to material for construction projects. Manufacturing cement is a significant contributor to atmospheric carbon dioxide. Using carbon-neutral materials like crimson mud or powdered snail shells can reduce cement's carbon dioxide emissions by half. As an adaptable alternative to traditional concrete, HVFA concrete has many uses. Long-lasting and useful in Plain Cement Concrete (PCC) projects, fly ash also enhances concrete's workability. The positive effects of fly ash on the environment, such as lower carbon dioxide emissions, are not new. Adding fly ash to concrete increases its strength and segregation, which reduces its price and makes it simpler to pump.

American Environmentalism

Author : J. Michael Martinez
Publisher : CRC Press
ISBN 13 : 0415633184
Total Pages : 1227 pages
Book Rating : 4.4/5 (156 download)

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Book Synopsis American Environmentalism by : J. Michael Martinez

Download or read book American Environmentalism written by J. Michael Martinez and published by CRC Press. This book was released on 2013-06-20 with total page 1227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protecting the natural environment and promoting sustainability have become important objectives, but achieving such goals presents myriad challenges for even the most committed environmentalist. American Environmentalism: Philosophy, History, and Public Policy examines whether competing interests can be reconciled while developing consistent, coherent, effective public policy to regulate uses and protection of the natural environment without destroying the national economy. It then reviews a range of possible solutions. The book delves into key normative concepts that undergird American perspectives on nature by providing an overview of philosophical concepts found in the western intellectual tradition, the presuppositions inherent in neoclassical economics, and anthropocentric (human-centered) and biocentric (earth-centered) positions on sustainability. It traces the evolution of attitudes about nature from the time of the Ancient Greeks through Europeans in the Middle Ages and the Renaissance, the Enlightenment and the American Founders, the nineteenth and twentieth centuries, and up to the present. Building on this foundation, the author examines the political landscape as non-governmental organizations (NGOs), industry leaders, and government officials struggle to balance industrial development with environmental concerns. Outrageous claims, silly misrepresentations, bogus arguments, absurd contentions, and overblown prophesies of impending calamities are bandied about by many parties on all sides of the debate—industry spokespeople, elected representatives, unelected regulators, concerned citizens, and environmental NGOs alike. In lieu of descending into this morass, the author circumvents the silliness to explore the crucial issues through a more focused, disciplined approach. Rather than engage in acrimonious debate over minutiae, as so often occurs in the context of "green" claims, he recasts the issue in a way that provides a cohesive look at all sides. This effort may be quixotic, but how else to cut the Gordian knot?

High-volume Fly Ash Concrete Technology

Author :
Publisher :
ISBN 13 :
Total Pages : 162 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis High-volume Fly Ash Concrete Technology by :

Download or read book High-volume Fly Ash Concrete Technology written by and published by . This book was released on 1992 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Best Practices Guide for High-volume Fly Ash Concretes

Author : Dale P. Bentz
Publisher : CreateSpace
ISBN 13 : 9781500312497
Total Pages : 64 pages
Book Rating : 4.3/5 (124 download)

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Book Synopsis Best Practices Guide for High-volume Fly Ash Concretes by : Dale P. Bentz

Download or read book Best Practices Guide for High-volume Fly Ash Concretes written by Dale P. Bentz and published by CreateSpace. This book was released on 2014-06-24 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: A best practices guide is developed from a synthesis of recent research on high-volume fly ash (HVFA) concrete mixtures. These best practices can be applied by the concrete construction industry to achieve desired properties and to ensure the (high) performance of HVFA concrete mixtures in practice. As such, the report considers all aspects of HVFA concrete production, from the characterization of the starting materials, through mixture proportioning and curing options to achieve desired properties, to the in-place early-age and long-term performance of the concrete in its fresh and hardened states. Both mechanical and transport properties are considered in detail. Perspective is established based on a brief review of current practices being employed nationally. Each topical section is concluded with a practice-based set of recommendations for the design and construction community. The report is intended to serve as a valuable resource to these communities, providing both a research summary and a guide to practical steps that can be taken to achieve the optimum performance of these sustainable concrete mixtures.

Supplemental Proceedings - Fourth International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete

Author :
Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Supplemental Proceedings - Fourth International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete by :

Download or read book Supplemental Proceedings - Fourth International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete written by and published by . This book was released on 1992 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

High-performance, high-volume fly ash concrete

Author : V. M. Malhotra
Publisher :
ISBN 13 : 9780973150773
Total Pages : 142 pages
Book Rating : 4.1/5 (57 download)

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Book Synopsis High-performance, high-volume fly ash concrete by : V. M. Malhotra

Download or read book High-performance, high-volume fly ash concrete written by V. M. Malhotra and published by . This book was released on 2008 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

High-volume Fly Ash Concrete Using Canadian Fly Ashes

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (945 download)

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Book Synopsis High-volume Fly Ash Concrete Using Canadian Fly Ashes by :

Download or read book High-volume Fly Ash Concrete Using Canadian Fly Ashes written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Sustainable Construction

Author : Víctor Yepes
Publisher : MDPI
ISBN 13 : 3036504826
Total Pages : 228 pages
Book Rating : 4.0/5 (365 download)

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Book Synopsis Sustainable Construction by : Víctor Yepes

Download or read book Sustainable Construction written by Víctor Yepes and published by MDPI. This book was released on 2021-05-20 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Construction is one of the main sectors that generates greenhouse gases. This industry consumes large amounts of raw materials, such as stone, timber, water, etc. Additionally, infrastructure should provide service over many years without safety problems. Therefore, their correct design, construction, maintenance, and dismantling are essential to reducing economic, environmental, and societal consequences. That is why promoting sustainable construction has recently become extremely important. To help address and resolve these types of questions, this book explores new ways of reducing the environmental impacts caused by the construction sector, as well promotes social progress and economic growth. The chapters collect the papers included in the “Sustainable Construction” Special Issue of the Sustainability journal. The papers cover a wide spectrum of issues related to the use of sustainable materials in construction, the optimization of designs based con sustainable indicators, the life-cycle assessment, the decision-making processes that integrate economic, social, and environmental aspects, and the promotion of durable materials that reduce future maintenance.

Design and Evaluation of High-volume Fly Ash (HVFA) Concrete Mixes

Author : Jeffery S. Voltz
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (839 download)

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Book Synopsis Design and Evaluation of High-volume Fly Ash (HVFA) Concrete Mixes by : Jeffery S. Voltz

Download or read book Design and Evaluation of High-volume Fly Ash (HVFA) Concrete Mixes written by Jeffery S. Voltz and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies, including those by the investigators, have shown that higher cement replacement percentages -- even up to 75 percent -- can result in excellent concrete in terms of both strength and durability. Referred to as high-volume fly ash (HVFA) concrete, this material offers a viable alternative to traditional portland cement concrete and is significantly more sustainable. However, HVFA concrete is not without its problems. At all replacement rates, fly ash generally slows down the setting time and hardening rates of concrete at early ages, especially under cold weather conditions, and when less reactive fly ashes are used. Furthermore, with industrial by-products, some variability in physical and chemical characteristics will normally occur, not only between power plants but also within the same plant. Consequently, to achieve the benefits of HVFA concrete, guidelines are needed for its proper application in bridges, roadways, culverts, retaining walls, and other transportation-related infrastructure components. The objective of this research was to design, test, and evaluate HVFA concrete mixtures. The study focused on the hardened properties of HVFA concrete containing aggregates and fly ash indigenous to the state of Missouri and developed guidelines on its use in infrastructure elements for MoDOT.