The Chemistry and Testing of Cement (Classic Reprint)

The modern development of engineering practice, dating from the second half of the eighteenth century, gave a new importance to these materials, and brought about the invention of many new types of cement, some of which have in great measure superseded the older kinds. A large and important industry has thus come into existence, and has gradually spread from a few local centres until it has become established in most parts of the civilised world. As the demand for cements on the part of the engineer and the builder has increased, so their requirements in respect of quality have become more exacting, and the manufacturer has not only been called on to increase his production, but also to improve the strength and stability of his product. This has been accomplished with a remarkable degree of success, partly as the result of improvements in mechanical processes and appliances, but also in no small degree through the co-operation of the chemist. This second factor assumes an increasing importance as the standard of quality is raised, and as efforts are made to extend the range of the raw materials employed in the industry.
(Typographical errors above are due to OCR software and don't occur in the book.)

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