By Pierre-Claude Aitcin
A whole assessment of the fast-developing subject of excessive functionality concrete (HPC) via one of many major researchers within the box. It covers all features of HPC from fabrics, homes and expertise, to development and checking out. The booklet can be useful for all concrete technologists and building engineers wishing to use the awesome homes of the cloth.
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Sample text
Therefore it requires at least the same level of attention. The properties of fresh concrete are reviewed in Chapter 13. The techniques normally used to measure these properties are the same as those used with usual concretes, so there are very few problems with their implementation. However, it must be emphasized that the slump test is not the best way to check the workability of a specific high-performance 14 Introduction concrete, though in the absence of any simple method to replace it we have to live with it.
Resistance to frost action in high-performance concrete depends both on the water/binder ratio and on the type of binder (cement and mineral addition) used. These factors directly influence the permeability and porosity of the paste, the two main parameters controlling the concrete’s ability to resist the internal cracking that can be initiated by freeze/thaw cycles. 30, is not enough: it is also necessary to achieve the finest, lowest capillary porosity possible so that no freezable water, or at least very little of it, is present in the high-performance concrete.
1973) An Evaluation of Some Factors Involved in Producing Very HighStrength Concrete, Portland Cement Association Research and Development Bulletin RD 104, Skokie, IL, 7 pp. C. , New York, 664 pp. M. (1991) The water-cement ratio—which one and where do we go? Concrete International, 13(9), September, 64–9. CHAPTER 2 Introduction The purpose of this introduction is to provide an overview of the different chapters that make up this book. It can be considered as a kind of executive summary for readers who want to have a general idea of the content of the book, for readers who are not interested in all the chapters, or for readers who do not like the order of the chapters.
