The Effect Of Additives On Portland Cement Hydration
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Author | : Pierre-Claude Aïtcin |
Publisher | : Woodhead Publishing |
Total Pages | : 668 |
Release | : 2015-11-12 |
Genre | : Technology & Engineering |
ISBN | : 0081006969 |
Science and Technology of Concrete Admixtures presents admixtures from both a theoretical and practical point-of-view. The authors emphasize key concepts that can be used to better understand the working mechanisms of these products by presenting a concise overview on the fundamental behavior of Portland cement and hydraulic binders as well as their chemical admixtures, also discussing recent effects in concrete in terms of rheology, mechanics, durability, and sustainability, but never forgetting the fundamental role played by the water/binder ratio and proper curing in concrete technology. Part One presents basic knowledge on Portland cement and concrete, while Part Two deals with the chemical and physical background needed to better understand what admixtures are chemically, and through which mechanism they modify the properties of the fresh and hardened concrete. Subsequent sections present discussions on admixtures technology and two particular types of concrete, self-consolidating and ultra-high strength concretes, with final remarks on their future. - Combines the knowledge of two leading authors to present both the scientific and technology of admixtures - Explains what admixtures are from a chemical point-of-view and illustrates by which mechanisms they modify the properties of fresh and hardened concrete - Presents a fundamental, practical, and innovative reference book on the topic - Contains three detailed appendices that can be used to learn how to use admixtures more efficiently
Author | : Vipin Kant Singh |
Publisher | : Elsevier |
Total Pages | : 922 |
Release | : 2023-02-21 |
Genre | : Technology & Engineering |
ISBN | : 0323950817 |
The Science and Technology of Cement and other Hydraulic Binders covers the design of Portland Cement composition using the ideas and formulae of earlier scientists, including the calculation of proportions of different cement phases formed during processing. Other chapters cover cement manufacture by dry, semi-dry or wet processes using rotary and shaft kilns. Particular attention is given to the physical changes that occur in the raw mix when affected by chemical processes. The chemistry of clinker formation which is concerned chiefly with high temperature reactions in the solid-state phase or reactions in the presence of the liquid phase is also discussed. Users will find the latest information on the storage of cement, its packing and handling, hydration and setting, Gypsum, different mineral additions, and advances in special and newer cements, including blended cements, Portland slag cement, Pozzolanic cements, high alumina cements, high-strength cement-based materials, fiber-reinforced cement, non-Portland cements and lime. - Covers raw materials, cement design and manufacturing, fuels used in manufacturing, phase balances, clinker training, hydration and setting - Includes various types of cement, mineral additions, high strength cement and different cement-based materials - Presents information on activated alkaline materials, recycled cements and novel additions - Discusses future trends in cement manufacturing and the circular economy - Contains a high number of figures, tables and reference data
Author | : National Research Council (U.S.). Highway Research Board |
Publisher | : |
Total Pages | : 516 |
Release | : 1966 |
Genre | : Highway engineering |
ISBN | : |
Author | : National Research Council (U.S.). Highway Research Board |
Publisher | : |
Total Pages | : 1096 |
Release | : 1966 |
Genre | : Highway engineering |
ISBN | : |
Author | : S. N. Ghosh |
Publisher | : Elsevier |
Total Pages | : 815 |
Release | : 2014-05-20 |
Genre | : Technology & Engineering |
ISBN | : 1483190382 |
Advances in Cement Technology: Critical Reviews and Case Studies on Manufacturing, Quality Control, Optimization and Use is a collection of articles that reviews the important aspects of the science and technology of cement. The book presents 20 papers that cover areas such as geology, raw materials, manufacture, chemistry, additions, admixtures, and industrial wastes. The coverage of the text includes concerns regarding cement production, such as the role of volatiles in cement manufacture and in the use of cement; refractories in cement-making; and chemico-mineralogical characteristics of raw materials. The book also covers analytical methods employed in cement science, including thermal methods; EDXA; and electron and optical microscopy. The book will be of great use to researchers and professionals involved in the research, development, and application of cement technology, such as chemical and civil engineers.
Author | : Wieslaw Kurdowski |
Publisher | : Springer Science & Business |
Total Pages | : 705 |
Release | : 2014-04-24 |
Genre | : Science |
ISBN | : 9400779453 |
This monograph describes cement clinker formation. It covers multicomponent systems, clinker phase structures and their reactions with water, hydrate composition and structure, as well as their physical properties. The mineral additions to cement are described as are their influence on cement-paste properties. Special cements are also discussed. The microstructure of concrete is then presented, and special emphasis is given to the role of the interfacial transition zone, and the corrosion processes in the light of cement-phase composition, mineral additions and w/c ratio. The admixtures' role in modern concrete technology is described with an emphasis on superplasticizer chemistry and its cement-paste rheological modification mechanism. Cement with atypical properties, such as calcium aluminate, white, low energy and expansive cements are characterized. The last part of the book is devoted to special types of concrete such as self compacting and to reactive powders.
Author | : Fernando Pacheco-Torgal |
Publisher | : Woodhead Publishing |
Total Pages | : 488 |
Release | : 2016-01-11 |
Genre | : Technology & Engineering |
ISBN | : 0081002092 |
Since 1930 more than 100,000 new chemical compounds have been developed and insufficient information exists on the health assessment of 95 percent of these chemicals in which a relevant percentage are used in construction products. For instance Portland cement concrete, the most used material on the Planet (10.000 million tons/year that in the next 40 years will increase around 100 %) currently used in around 15% of total concrete production contains chemicals used to modify their properties, either in the fresh or hardened state. Biopolymers are materials that are developed from natural resources. They reduce dependence on fossil fuels and reduce carbon dioxide emissions. There is a worldwide demand to replace petroleum-based materials with renewable resources. Currently bio-admixtures represent just a small fraction of the chemical admixtures market (around 20%) but with environmental awareness for constituents in construction materials generally growing (the Construction Products Regulation is being enforced in Europe since 2013), the trend towards bio-admixtures is expected to continue. This book provides an updated state-of-the-art review on biopolymers and their influence and use as admixtures in the development of eco-efficient construction materials. - Provides essential knowledge for researchers and producers working on the development of biopolymer-modified construction materials - Discusses the various types of biopolymers currently available, their different production techniques, their use as bio-admixtures in concretes and mortars and applications in other areas of civil engineering such as soil stability, wood preservation, adhesives and coatings - All contributions are made from leading researchers, who have intensive involvement in the design and use of biopolymers in construction materials
Author | : J. Lecourtier |
Publisher | : Editions TECHNIP |
Total Pages | : 134 |
Release | : 1993 |
Genre | : Technology & Engineering |
ISBN | : 9782710806493 |
Cementing is a difficult operation and the quality of the result depends on many factors associated with: the state of the open hole section; the equipment and materials employed; the fluids used; the procedures applied. This document presents an update of the information and recommendations on methods and procedures to be applied at the well site.Contents: 1. Drawing up the cementing program: Cement classes according to API specifications. Slurries. General information on flow regime and on spacers. Mud conditioning before cementing. Summary. 2. Different types of cementing: One-stage cementing and two-stage cementing. Cementing with stinger. Cementing a liner. 3. Setting cement plugs to combat lost circulation: Thixotropic slurries, cement gels, cement slurries without additives, and their placement. Plaster Diesel Oil Cement (PDOC) and Diesel Oil Cement (DOC), and their placement. 4. Causes of failure in casing cement jobs and remedies: Losses during slurry placement. Slurry overdisplacement. Lack of tightness of the cement sheath. Flash set. Setting defect. Lack of mechanical strength. Cement deterioration. Casing disconnection.
Author | : Martin Pelikan |
Publisher | : Springer Science & Business Media |
Total Pages | : 194 |
Release | : 2005-02 |
Genre | : Computers |
ISBN | : 9783540237747 |
This book provides a framework for the design of competent optimization techniques by combining advanced evolutionary algorithms with state-of-the-art machine learning techniques. The book focuses on two algorithms that replace traditional variation operators of evolutionary algorithms by learning and sampling Bayesian networks: the Bayesian optimization algorithm (BOA) and the hierarchical BOA (hBOA). BOA and hBOA are theoretically and empirically shown to provide robust and scalable solution for broad classes of nearly decomposable and hierarchical problems. A theoretical model is developed that estimates the scalability and adequate parameter settings for BOA and hBOA. The performance of BOA and hBOA is analyzed on a number of artificial problems of bounded difficulty designed to test BOA and hBOA on the boundary of their design envelope. The algorithms are also extensively tested on two interesting classes of real-world problems: MAXSAT and Ising spin glasses with periodic boundary conditions in two and three dimensions. Experimental results validate the theoretical model and confirm that BOA and hBOA provide robust and scalable solution for nearly decomposable and hierarchical problems with only little problem-specific information.
Author | : D. C. Webster |
Publisher | : |
Total Pages | : 16 |
Release | : 1989 |
Genre | : Aggregates (Building materials) |
ISBN | : |