Compressive Strength of Concrete


Book Description

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.




Corrosion of Steel in Concrete


Book Description

The corrosion of reinforcing steel in concrete is a major problem facing civil engineers and surveyors throughout the world today. There will always be a need to build stuctures in corrosive environments and it is therefore essential to address the problems that result. Corrosion of Steel in Concrete provides information on corrosion of steel in at




Mechanical Behavior of High Performance Concretes


Book Description

Summary report: This report presents a summary of each phase of a 4-year research program of the Strategic Highway Research Program (SHRP), which examined the mechanical behavior of high performance concretes. -- Production of high performance concrete: This report details the laboratory developmental work on producing high performance concrete for highway applications. -- Very early strength (VES)concrete: This report details the laboratory investigation of the mechanical behavior and field trials of high performance concrete for highway applications, and more specifically, VES concrete. -- High early strength (HES) concrete: The objective of this particular investigation is to obtain information on the mechanical behavior of HES concrete and to demonstrate its use under field conditions. -- Very high strength (VHS) concrete: The objective of this particular investigation is to obtain information on the mechanical behavior of VHS concrete. -- High early strength fiber reinforced concrete: This study provides an extensive data base and a summary of a comprehensive experimental investigation on the fresh state and mechanical properties of high early strength fiber reinforced concrete (HESFRC).




Super-High-Strength High Performance Concrete


Book Description

When produced correctly, concrete can be extremely strong, with high load-bearing capacity and superior durability. Another noteworthy property is the relatively low amount of energy and resources consumed during production. Super-High-Strength High Performance Concrete brings together the results of a major research project by the National Natural Science Foundation of China and the Doctoral Foundation of the Ministry of Education of China. This ten-year project explored the properties, performance, and potential of super-high-strength high performance (SHSHP) concrete. With a view towards improved production that optimizes the strength and durability of concrete, the book presents a host of topics on the cutting edge of concrete research. These include: A new method for the specific strength analysis of the pozzolanic effect of active mineral admixtures Analysis of the strength composition of SHSHP concrete Optimization of raw materials and mix proportion parameters for strength and flowability Analysis of the mechanical properties, deformation, and durability of SHSHP concrete Methods for decreasing autogeneous shrinkage Testing methods for SHSHP concrete The book concludes with a consideration of the practical and economic benefits of these optimized concretes. A systematic study of the different aspects of this essential commodity as well as the future direction of concrete science and technology, this book is a valuable resource for material scientists and engineers engaged in developing better structures.




High Performance Concretes


Book Description

This state-of-the-art report summarizes the results of an extensive search and review of available literature on the mechanical properties of concrete, with particular reference to high performance concrete for highway applications. Included in the review and discussion are the behavior of plastic concrete as well as the strength and deformation characteristics of hardened concrete. Both short-term and long-term effects are considered. Based on the review of the available information, research needs are identified. It is concluded that much research is needed to develop data on the strength and durability properties of concrete which develops high strength, particularly very early strength.




Mechanical Properties of High-strength Concrete


Book Description

Researchers conducted an experimental program to investigate production techniques and mechanical properties of high-strength concrete and to provide recommendations for using these concretes in manufacturing precast/prestressed bridge girders. High-strength concretes with 28-day compressive strengths in the range of 8,000 to 18,600 psi (55.2 to 128 MPa) were produced. The study also investigated the effects of test parameters such as mold size, mold material, and end condition. More than 6,300 specimens were cast from approximately 140 mixes over a period of three years.




Concrete Mixture Proportioning


Book Description

The design of concrete mixes is becoming increasingly complex, with the addition of new materials in the compounds, such as organic admixtures, fibres and supplementary cementitious materials. Moreover, the list of properties which concretes are required to possess for certain applications has increased, and interest is developing in rheology, durability, deformability and whole-life behaviour. This book presents a number of simple models for the understanding of a concrete system, and provides the techniques for developing more sophisticated models for the practical design of concrete mixes.




Supplementary Cementing Materials


Book Description

This book is an attempt to consolidate the published research related to the use of Supplementary Cementing Materials in cement and concrete. It comprises of five chapters. Each chapter is devoted to a particular supplementing cementing material. It is based on the literature/research findings published in journals/conference proceeding, etc. Topics covered in the book are; coal fly ash, silica fume (SF), granulated blast furnace slag (GGBS), metakaolin (MK), and rice husk ash (RHA). Each chapter contains introduction, properties of the waste material/by-product, its potential usage, and its effect on the properties of fresh and hardened concrete and other cement based materials.




Ultra-High Performance Concrete UHPC


Book Description

Selected chapters from the German concrete yearbook are now being published in the new English "Beton-Kalender Series" for the benefit of an international audience. Since it was founded in 1906, the Ernst & Sohn "Beton-Kalender" has been supporting developments in reinforced and prestressed concrete. The aim was to publish a yearbook to reflect progress in "ferro-concrete" structures until - as the book's first editor, Fritz von Emperger (1862-1942), expressed it - the "tempestuous development" in this form of construction came to an end. However, the "Beton-Kalender" quickly became the chosen work of reference for civil and structural engineers, and apart from the years 1945-1950 has been published annually ever since. Ultra high performance concrete (UHPC) is a milestone in concrete technology and application. It permits the construction of both more slender and more durable concrete structures with a prolonged service life and thus improved sustainability. This book is a comprehensive overview of UHPC - from the principles behind its production and its mechanical properties to design and detailing aspects. The focus is on the material behaviour of steel fibre-reinforced UHPC. Numerical modelling and detailing of the connections with reinforced concrete elements are featured as well. Numerous examples worldwide - bridges, columns, facades and roofs - are the basis for additional explanations about the benefits of UHPC and how it helps to realise several architectural requirements. The authors are extensively involved in the testing, design, construction and monitoring of UHPC structures. What they provide here is therefore a unique synopsis of the state of the art with a view to practical applications.