Author: Lindstead, Francis
First published: N/A
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THE cost of grinding the raw materials, coal and finished cement is a considerable proportion of the total cost of cement manufacture. With a view to reducing this cost of grinding, the British Portland Cement Research Association has carried out a comprehensive research dealing with some of the fundamental principles governing the crushing of materials used in cement manufacture to a greater degree of fineness.
Chas E. Blyth, Geoffrey Martin and Harold Tongue
Increasing attention is being given, by engineers to this branch of civil engineering, principally in connection with the manufacture of the necessary steel reinforcement and in the selection, grading and mixture of the requisite concrete aggregates. That the latter question is of the utmost importance there can be no doubt; in fact, many of the successful reinforced concrete roads, for which the manufacturers of various
fabrics are taking no little credit upon themselves, are in reality due to the quality of the concrete rather than to the amount and arrangement of any embedded mesh.
UNDER this title, an endeavour will be made to give the ultimate results of practical experiments with concrete mixtures whiah have been carried out intermittently over a period of four years. The author has made his investigations as opportunities lent themselves, and found himself, after his first series of experiments, obliged to tear up the results of much labour, and persist later in a more thorough manner. This has happened several times, and this paper will be practically confined to the results of 1923, and as such, will be referred to here.
B. Price Davies