Numerical and Experimental Analysis of Advanced Concrete Materials


Book Description

In modern engineering practice, more different types of concrete structures are used. Current applications in the construction of modern structures, or applications in the strengthening and reinforcement of existing structures, require the analysis of structures of different material properties and shapes exposed to different types of loads such as quasi-static, dynamic, cyclic, impact or seismic. In practice, several experimental tests exist that provide new insights into concrete as a material at the micro, mezzo, and macro levels. These results significantly increase knowledge about the behavior of concrete as a material. Such tests are expensive, but their significance lies in the possibility of implementing material behavior in new numerical models. The development of new numerical models can simulate the behavior of concrete as a building material with improved properties due to a new type of aggregate, some chemical composition, etc. Also numerical models can simulate the behavior of concrete structures whose load capacity can be increased form of fastening. This special issue collected and presented experimental results as well as new numerical simulations of the behavior of concrete as a material and concrete structures. A thorough understanding, which processes affect the reduction of strength and the formation of cracks in concrete, is key to the analysis of existing materials and design of improved innovative materials of concrete and concrete structures.










Experimental Analysis of Nano and Engineering Materials and Structures


Book Description

This volume contains two-page abstracts of the 482 papers presented at the latest conference on the subject, in Alexandroupolis, Greece. The accompanying CD contains the full length papers. The abstracts of the fifteen plenary lectures are included at the beginning of the book. The remaining 467 abstracts are arranged in 23 tracks and 28 special symposia/sessions with 225 and 242 abstracts, respectively. The papers of the tracks have been contributed from open call, while the papers of the symposia/sessions have been solicited by the respective organizers.




Manual of Numerical Methods in Concrete


Book Description

Manual of numerical methods in concrete aims to present a unified approach for the available mathematical models of concrete, linking them to finite element analysis and to computer programs in which special provisions are made for concrete plasticity, cracking and crushing with and without concrete aggregate interlocking. Creep, temperature, and shrinkage formulations are included and geared to various concrete constitutive models.




Technological Advancements in Construction


Book Description

The book consists of original research papers in the field of Technological Advancements in Construction. It covers such topics as non-destructive testing, structural health monitoring, innovative composite materials, strengthening and rehabilitation of buildings and structures, seismic resilience of structures, thermal protection of buildings, construction and operation of buildings and structures in extreme climatic conditions, structural dynamics and vibration control, and green construction. The book contains latest information on structural mechanics of composite materials and structures, theoretical and computational modeling of new materials and structures, experimental and numerical analysis in building rehabilitation and strengthening, analytical, numerical and experimental methodologies for the analysis of multilayered structures, and advanced methods for seismic performance evaluation of building structures. The book includes original research and application papers of high academic level, where significant scientific novelty is clearly demonstrated. The book presents a valuable tool for researchers and construction professionals.




Advanced Concrete Technology


Book Description

Over the past two decades concrete has enjoyed a renewed level of research and testing, resulting in the development of many new types of concrete. Through the use of various additives, production techniques and chemical processes, there is now a great degree of control over the properties of specific concretes for a wide range of applications. New theories, models and testing techniques have also been developed to push the envelope of concrete as a building material. There is no current textbook which brings all of these advancements together in a single volume. This book aims to bridge the gap between the traditional concrete technologies and the emerging state-of-the-art technologies which are gaining wider use.




High Performance and Optimum Design of Structures and Materials V


Book Description

The use of novel materials and new structural concepts nowadays is not restricted to highly technical areas like aerospace, aeronautical applications or the automotive industry, but affects all engineering fields including those such as civil engineering and architecture. The included contributions highlight the latest developments in design and manufacturing. Most high-performance structures require the development of a generation of new materials, which can more easily resist a range of external stimuli or react in a non-conventional manner. Particular emphasis is placed on intelligent structures and materials as well as the application of computational methods for their modelling, control and management. The book also addresses the topic of design optimisation. Contributions cover numerical methods, different optimisation techniques and new software. Optimisation problems include those related to the size, shape and topology of structures and materials. Optimisation techniques have much to offer to those involved in the design of new industrial products, as the appearance of powerful commercial computer codes has created a fertile field for the incorporation of optimisation in the design process of all engineering disciplines. The performance of structures under shock and impact loads is another area covered. The increasing need to protect civilian infrastructure and industrial facilities against unintentional loads arising from accidental impact and explosion events as well as terrorist attacks is reflected in the sustained interest worldwide. While advances have been made in recent decades, many challenges remain, such as developing more effective and efficient blast and impact mitigation approaches or assessing the uncertainties associated with large and small scale testing and validation of numerical and analytical models. The overall aim is to move towards a better understanding of the critical issues relating to the testing behaviour, modelling and analyses of protective structures against blast and impact loading. The studies contained in this volume were presented at the International Conference on High Performance and Optimum Structures and Materials Encompassing Shock and Impact Loading and address issues involving advanced types of structures, particularly those based on new concepts, and shock and impact resistance.




Advances in Engineered Cementitious Composite


Book Description

Advances in Engineered Cementitious Composite: Materials, Structures and Numerical Modelling focuses on recent research developments in high-performance fiber-reinforced cementitious composites, covering three key aspects, i.e., materials, structures and numerical modeling. Sections discuss the development of materials to achieve high-performance by using different type of fibers, including polyvinyl alcohol (PVA), polyethylene (PE) polypropylene (PP) and hybrid fibers. Other chapters look at experimental studies on the application of high-performance fiber-reinforced cementitious composites on structures and the performance of structural components, including beams, slabs and columns, and recent development of numerical methods and modeling techniques for modeling material properties and structural behavior. This book will be an essential reference resource for materials scientists, civil and structural engineers and all those working in the field of high-performance fiber-reinforced cementitious composites and structures. Features up-to-date research on [HPFRCC], from materials development to structural application Includes recent experimental studies and advanced numerical modeling analysis Covers methods for modeling material properties and structural performance Explains how different types of fibers can affect structural performance




Simulation of Fresh Concrete Flow


Book Description

This work deals with numerical simulations of fresh concrete flows. After the first introductory chapter dealing with the various physical phenomena involved in flows of fresh cementitious materials, the aim of the second chapter is to give an overview of the work carried out on simulation of flow of cement-based materials using computational fluid dynamics (CFD). This includes governing equations, constitutive equations, analytical and numerical solutions, and examples showing simulations of testing, mixing and castings. The third chapter focuses on the application of Discrete Element Method (DEM) in simulating the flow of fresh concrete. The fourth chapter is an introductory text about numerical errors both in CFD and DEM whereas the fifth and last chapter give some recent examples of numerical simulations developed by various authors in order to simulate the presence of grains or fibers in a non-Newtonian cement matrix.