Cement and Concrete Chemistry

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Writing a book on the chemistry of cement and concrete is a very responsible task, and if we take into account very valuable works of Lea and principally of Taylor, even unusually responsible. His last book is of the highest value and, apart from its clear presentation of all important problems of cement chemistry, it contains a different and interesting Taylor’s hypothesis, among others concerning the structure of C-S-H phase. The progress in cement chemistry was particularly very quick in the last thirty years, principally because of the development of new methods and techniques, including the progress in scanning electron microscopy and introduction of some nontypical, quite new methods. To the latter ones I enclose the electrons Auger, which make possible to determine the superplasticizer layer on cement grains. In my book, I tried to present the maximum of interesting experimental results and linked them
with hypotheses, leaving for the readers the last choice. One of my goals was also to remind some scientists, which innovative works make possible the further development of cement chemistry and which were forgotten, particularly by young researches. A typical example is Professor Hans Kühl, who already in 1907 had established the accelerating effect of sodium hydroxide and of sulphate ions on the hardening of granulated blastfurnace slag. In 1908 H. Kühl obtained a German patent for the production of supersulphated cement, based on his discoveries. During the workshop “Ca(OH)2 in Concrete” J.

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Gebauer reminded that the concrete from this cement, used to build the Beervlei Dam in South Africa, had after forty five years of exploitation the strength of 124 MPa. The most probable is that only “the lime saturation factor”, which was also introduced by H. Kühl, is till now linked with his name. The writing of this book would not be possible without numerous fruitful discussions with my friends, whom I present my warmest thanks. I owe particularly many to the discussions with the following professors: A. Bielański, H. F. W. Taylor, F. W. Locher, W. Wieker, and A. Małecki, as well as to Sorrentinos and to Mike George. Without crucial help of Professor Wiesława Nocuń-Wczelik, who translated the majority of the book, appearing of the English version will be not possible. I present my thanks to my young assistant Aleksandra Bochenek, who wrote the English version of all tables and figures, as well as text edition, and particularly the preparation of figures was a very laborious task. I would like also to thank my former co-worker Barbara Trybalska for the beautiful scanning electron microscope photos that she took me when she worked with me in the AGH University of Science and Technology. In the book there are many figures which enhance its value in a significant degree and make several phenomena much clearer for the readers. All these figures are touching very important and, in majority of cases, complicated processes or relations and were included in the papers of world–known authors. I would like to present my warm thanks for all authors as well as for the publishers, being copyrights holders, who granted me permission to reproduce these figures in the book. First of all, I address my thanks to Elsevier, because the majority of figures are from the great journal “Cement and Concrete Research”, as well as to American Ceramic Society, Presses des Ponts et Chaussées and Applied Science Publishers. I address also my thanks to Editions Septima, which edited the Proceedings of 7th International Congress on the Chemistry of Cements in Paris in 1980. However, I could not find neither Editions Septima nor the successors of this Publisher. The same was with the Liaison des Laboratoires des Ponts et Chaussées Publisher, to which I address also my deep thanks. I due also my great thanks to Chemical Publishing Company, INC. to grant me permission to reproduce some figures from the excellent book of F.M. Lea “The Chemistry of Cement and Concrete”. All these figures are of crucial importance for my book.

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سیمان و بتن شیمی

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