Structural Lightweight Aggregate Concrete


Book Description

Lightweight aggregate concrete is undergoing something of a renaissance. Although this material has been available for many years, only now is it being used more widely. This book provides a comprehensive review of this growing field from an international perspective.




Lightweight Materials


Book Description




Lightweight Ballistic Composites


Book Description

Ballistic composites need to be lightweight and durable as well as exhibiting high impact resistance and damage tolerance. This important book reviews these requirements, how the materials used for ballistic composites meet them and their range of applications.After an introductory chapter, Lightweight ballistic composites is split into two main sections. The first part of the book explores material requirements and testing. There are chapters on bullets and bullet fragments, material responses to ballistic impact, standards and specifications, modelling and test methods. Part Two reviews the range of materials used, production methods and applications. Topics discussed include high-performance ballistic fibres and ceramics, non-woven ballistic and prepreg composites, and their uses in body armour, vehicle and aircraft protection.This major book is the first of its kind to give a comprehensive review of the current use of lightweight ballistic composites in both military and law-enforcement applications. It is an invaluable reference for all those involved in personnel and vehicle protection in defence and police forces around the world. - Reviews the current use of lightweight ballistic composites in both military and law-enforcement application - An authoritative overview of the range of materials used, production methods and applications - Explores material requirements and testing




Lightweight Aggregate Concrete - Codes and standards


Book Description

Part 1 – Recommended extensions to Model Code 90 Starting in 1995 as a Joint CEB/FIP Working Group on Lightweight Aggregate Concrete (LWAC), the group was after the merger of CEB and FIP attached to the new fib Commission 8 Concrete. As a background for an extension of the CEB/FIP Model Code 1990 (MC 90) it delivered firstly Bulletin 4. Similarly to what has been done before in the field of High Strength / High Performance Concrete the present guide identifies the lacunae in the existing MC90 and proposes supplementary or alternative solutions to be applied for lightweight aggregate concretes. In order to facilitate its use the report is edited in two columns following the numbering of the CEB-FIP Model Code 1990. The group has given preference to topics of practical importance for LWAC structures, and for which reliable information is available. Justifications of the proposed extensions are to be found in the references to each section. Part 2 – Identification of research needs The technical report identifies the research needs resulting from those clauses of MC 90 which need amendment, and for which more basic research should provide a better understanding of mechanical, physical and chemical processes. Part 3 – Application of lightweight aggregate concrete The state-of-art report documents 33 application examples of projects world-wide. Twenty-eight two-page and five one-page presentations aim to explain the motivation for adopting this technology and report on the design considerations and codes applied, the practical experience during design and construction, the results obtained and the infield performance; for each example references list the literature where more detailed information can be found.




Advanced Multifunctional Lightweight Aerostructures


Book Description

Offers a review of the newest methodologies for the characterization and modelling of lightweight materials and structures Advanced Multifunctional Lightweight Aerostructures provides an in-depth analysis of the thermal, electrical, and mechanical responses of multi-functional lightweight structures. The authors, noted experts on the topic, address the most recent and innovative methodologies for the characterization and modelling of lightweight materials and discuss various multiscale simulation approaches and nonlinear/structural dynamics methodologies. They present multifunctional materials and structures and offer detailed descriptions of the complex modelling of these structures. The authors divide the text into two sections and demonstrate a keen understanding and awareness of multi-functional lightweight aerostructures by taking unique approaches. They explore multi-disciplinary modelling and characterization alongside benchmark problems and applications, topics that are rarely approached in this field. This important book: Offers thermal, electrical, and mechanical analyses of multi-functional lightweight structures Covers innovative methodologies for the characterization and modelling of lightweight materials and structures Presents characterizations of a wide variety of novel materials Considers multifunctional novel structures with potential applications in different high-tech industries Discusses thermal and mechanical behaviors of some critical parts of aircrafts Includes efficient and highly accurate methodologies Written for professionals, engineers, researchers, and educators in academia, industrial, and other specialized research institutions, Advanced Multifunctional Lightweight Aerostructures is a much-needed text on the design practices of existing engineering building services and how these methods combine with recent developments.




Materials for Lightweight Constructions


Book Description

This book presents the key concepts and methods involved in the development of a variety of materials for lightweight constructions, including metals, alloys, polymers and composites. It provides case studies and examples to explain strategies adapted for specific applications of the materials and covers traditional to advanced manufacturing concepts of lightweight materials, including 3D printing. It also illustrates the fundamentals and usability of biodegradable materials for achieving a greener environment, as well as possibilities of green manufacturing. Covers the fundamentals of a range of materials used for lightweight constructions Discusses fabrication and testing of materials Addresses relevant concepts of 3D printing and biodegradable materials Explores analysis of the failure mechanism of materials used in various applications Identifies the applicability of materials to a variety of situations Materials for Lightweight Constructions will suit researchers and graduate students in materials science, mechanical engineering, construction and composites.




High-performance/high-strength Lightweight Concrete for Bridge Girders and Decks


Book Description

"TRB's National Cooperative Highway Research Program (NCHRP) Report 733: High-Performance/High-Strength Lightweight Concrete for Bridge Girders and Decks presents proposed changes to the American Association of State Highway and Transportation Officials' Load and Resistance Factor Design (LRFD) bridge design and construction specifications to address the use of lightweight concrete in bridge girders and decks. The proposed specifications are designed to help highway agencies evaluate between comparable designs of lightweight and normal weight concrete bridge elements so that an agency's ultimate selection will yield the greatest economic benefit. The attachments contained in the research agency's final report provide elaborations and detail on several aspects of the research. Attachments A and B provide proposed changes to AASHTO LRFD bridge design and bridge construction specifications, respectively; these are included in the print and PDF version of the report. Attachments C through R are available for download below. Attachments C, D, and E contain a detailed literature review, survey results, and a literature summary and the approved work plan, respectively. Attachment C; Attachment D ; Attachment E; Attachments F through M provide details of the experimental program that were not able to be included in the body of this report. Attachment F; Attachment G; Attachment H; Attachment I; Attachment J; Attachment K; Attachment L; Attachment M. Attachments N through Q present design examples of bridges containing lightweight concrete and details of the parametric study. Attachment N; Attachment O; Attachment P; Attachment Q. Attachment R is a detailed reference list."--Publication information.




Structural Mechanics in Lightweight Engineering


Book Description

This book provides a comprehensive yet concise presentation of the analysis methods of lightweight engineering in the context of the statics of beam structures and is divided into four sections. Starting from very general remarks on the fundamentals of elasticity theory, the first section also addresses plane problems as well as strength criteria of isotropic materials. The second section is devoted to the analytical treatment of the statics of beam structures, addressing beams under bending, shear and torsion. The third section deals with the work and energy methods in lightweight construction, spanning classical methods and modern computational methods such as the finite element method. Finally, the fourth section addresses more advanced beam models, discussing hybrid structures as well as laminated and sandwich beams, in addition to shear field beams and shear deformable beams. This book is intended for students at technical colleges and universities, as well as for engineers in practice and researchers in engineering.




The Lightweight Treated Soil Method


Book Description

This is an in-depth practical examination of the newly developed Lightweight Treated Soil Method, based on the extensive research and experience of two leading recognized experts. Indispensable to geotechnical and construction engineers or to researchers and professionals interested in coastal engineering techniques, geotechnical engineering or geo




Lightweight Aggregate Concrete


Book Description

In spite of the increasing use and demand for lightweight aggregate concrete (LWAC), there is still a lack of adequate explanations to understand the mechanisms responsible for the strength and durability properties of LWAC. This book is written to give an overall picture of LWAC, from the historical background, aggregate production, proportioning and production of concrete, to applications in structures. Physical properties and chemical durability are described in detail. The physical properties include density, strength, shrinkage, and elasticity. Chemical durability includes resistance to acids, chloride ingress, carbonation, and freeze-thaw resistance. Fire resistance is also included, which is seldom considered, but is a very important aspect of the safety of the structure. Microstructure development and its relation to the durability properties of LWAC generally are not highlighted in the literature. The development of bonds, the microstructure with different binder systems, and different types of lightweight aggregates are explained. They show how lightweight aggregate concrete differs from normal weight concrete. The chapters on chloride ingress and freeze-thaw resistance are detailed because of the use of LWAC in offshore construction. The economical aspects of using LWAC are also reviewed. Emphasis is placed on the fact that although the cost of LWAC is high, the total cost of construction has to be considered, including the cost of transport, reinforcement, etc. When these are considered then LWAC becomes cheaper and attractive. The life cycle cost of the concrete is another consideration for calculating long-term savings on maintenance costs.