Описание: This book discusses the behaviour of isolated concrete bottle-shaped struts affected by internal expansion reactions (ISR). For that purpose, the numerical modelling of damaged concrete was performed using the Concrete Damaged Plasticity Model (CDPM) implemented in ABAQUS and validated the model through Sankovich's tests. A procedure to automatically obtain the concrete plasticity and damage parameters, essential for CDPM, was developed in Matlab. The inputs were the characteristic compressive strength of the concrete, the equivalent length of the finite element mesh and the ratio between the plastic and inelastic compressive strains. The results showed that the CDPM could represent the load-bearing mechanisms of isolated concrete bottle-shaped struts for a range of several stress levels to which these elements may be subjected in the panels investigated. The numerical simulations for different expansion levels consistently captured the expected damage profile of the panels and the load corresponding to the formation of the first crack, the estimated crack opening, and the ultimate load. For the panels investigated, the reduction observed in the failure load reached values close to 70%, the increase of the tensile plastic deformation was more than 60%, and the maximum crack opening can reach an increase of 113% when compared with those observed experimentally in panels without internal swelling reactions The book also offers a systematic review of the current state of knowledge and it is a valuable resource for scientists, students, practitioners, and lecturers in various scientific and engineering disciplines, namely, civil and materials engineering, as well as and other interested parties.
Описание: Since the early 1930`s, Soviet chemists have played a lead- ing role in the study of unfamiliar oxidation state compounds of the peroxide, superoxide, and ozonide types.
Описание: Global trends suggest that 21st-century science and technology will be nanoscale, as traditional technologies have exhausted the potential for miniaturizing individual elements, prompting the search for alternative pathways. Nanophase materials science differs from the traditional one not only by the creation of fundamentally new materials, but also by processes that take place at the atomic and molecular levels, monolayers, and nano volumes.
Polymer-Inorganic Nanostructured Composites Based on Amorphous Silica, Layered Silicates, and Polyionenes is devoted to the development of physical and chemical principles of technology for polymer-inorganic nanostructured composites based on amorphous silica, layered silicates, and polyionenes to use the creation of composites for technical purposes. Covering topics such as fractal structure, phosphoric-organic compounds, and proton conductance, this premier reference source is an essential resource for chemists, engineers, students, and educators of higher education, researchers, and academicians.
Описание: In this reference book, we're going to discuss the alkali metals, the alkaline Earth metals and the transition metals. This is a very lively discussion that's complete with carefully selected information and pictures. You can read this book on your own or share it with some of your friends. Happy reading!
Автор: Blight, Geoffrey E. , Alexander, Mark G Название: Alkali-Aggregate Reaction and Structural Damage to Concrete ISBN: 1138073032 ISBN-13(EAN): 9781138073036 Издательство: Taylor&Francis Рейтинг: Цена: 12401.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The book discusses methods that can be used for in situ non-destructive testing to assess the effects of AAR, and in-service measurements and load-testing to assess the present and future safety of reinforced concrete structures. Methods of repair and rehabilitation and their long-term success are also treated, as well as methods of halting or slowing the progress of AAR. At the same time, the fundamentals of AAR are explained in terms intelligible to the civil and structural engineer who is primarily trained in structural mechanics and design, but who also needs a basic understanding of the AAR process and its effects on concrete.
Автор: Pacheco-Torgal Fernando, Chindaprasirt Prinya, Ozbakkaloglu Togay Название: Handbook of Advances in Alkali-Activated Concrete ISBN: 0323854699 ISBN-13(EAN): 9780323854696 Издательство: Elsevier Science Рейтинг: Цена: 47161.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
Advances on Alkali-activated Concrete, provides comprehensive information on materials, structural properties and realistic potential for the application of alkali-activated concretes and cements. Divided over seven key parts, including the design of alkali-activated concrete, their fabrication and curing, rheology, properties of alkali-activated concrete, durability, dynamic performance and LCA, the book will be an essential reference resource for academic and industrial researchers, materials scientists, chemists, manufacturers and civil engineers working with alkali-activated materials and concrete structures.
Provides an essential guide on the latest developments in alkali-activated concrete
Comprehensively examines alkali-activated concrete performance under cyclic loading
Includes concrete systems containing coarser aggregates
Presents several important cases studies of application
Описание: This book contains the full set of RILEM Recommendations which have been produced to enable engineers, specifiers and testing houses to design and produce concrete which will not suffer damage arising from alkali reactions in the concrete.
Автор: Abderrazzak Douhal Название: Chemistry of silica and zeolite-based materials : ISBN: 0128178132 ISBN-13(EAN): 9780128178133 Издательство: Elsevier Science Рейтинг: Цена: 28970.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
Chemistry of Silica and Zeolite-Based Materialscovers a wide range of topics related to silica-based materials from design and synthesis to applications in different fields of science and technology. Since silica is transparent and inert to the light, it is a very attractive host material for constructing artificial photosynthesis systems. As an earth-abundant oxide, silica is an ideal and basic material for application of various oxides, and the science and technology of silica-based materials are fundamentally important for understanding other oxide-based materials. The book examines nanosolvation and confined molecules in silica hosts, catalysis and photocatalysis, photonics, photosensors, photovoltaics, energy, environmental sciences, drug delivery, and health.
Written by a highly experienced and internationally renowned team from around the world, Chemistry of Silica and Zeolite-Based Materialsis ideal for chemists, materials scientists, chemical engineers, physicists, biologists, biomedical sciences, environmental scientists, toxicologists, and pharma scientists.
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The enormous versatility of silica for building a large variety of materials with unique properties has been very well illustrated in this book.... The reader will be exposed to numerous potential applications of these materials - from photocatalytic, optical and electronic applications, to chemical reactivity in confined spaces and biological applications. This book is of clear interest not only to PhD students and postdocs, but also to researchers in this field seeking an understanding of the possible applications of meso and microporous silica-derived materials. - Professor Avelino Corma, Institute of Chemical Technology (ITQ-CSIC) and Polytechnical University of Valencia, Spain
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