Silicate of Soda and Concrete, with Special Reference to the Treatment of Roads, Floors, etc., For t

THIS3 question of density when relating to concrete for all purposes, and particularly when the concrete is to withstand a hydrostatic pressure, is all important to the engineer, and hence it is no wonder that he is tempted to administer “patent medicines” to the concrete when he has doubts as regards its “bodily fitness.” Alfred S. Grunspan

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. H. Weston