A Practical Treatise on Concrete and How to Make It; With Observations on the Uses of Cements, Limes and Mortars

A Practical Treatise on Concrete and How to Make It; With Observations on the Uses of Cements, Limes and Mortars

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1869 edition. Excerpt: ...was as much as half an inch in a month; with Anston stone rather more; while along the bed of a joint in Bramley-fall granite or other coarse-grained stone, it amounted to an inch and a half in the same time; smoothness of surface being shown by these observations to be less favourable to its progress than the coarse-grained or rough stones. The penetration is greatest in the case of pure limes, .and this power diminishes in a ratio with the amount of impurities in the lime; so that an eminently hydraulic lime has less attraction for carbonic acid than one made from chalk. The intense avidity of quick lime for carbonic acid is well illustrated in the practice of miners, who, when first entering a coal mine after an explosion, put layers of it in the bottom of the cages in which they descend, so as to purify the air before entering the workings, and thereby sensibly reduce the risk they run by entering so dangerous an atmosphere. The subject of lime and cement setting is one of great interest, and considering its importance is but imperfectly understood. In the above remarks we have endeavoured to show the importance of extreme pulverization of the lime and cement if satisfactory results are desired. It may be said shortly that the minute fineness of the matrices (lime and cement) and their extreme division--which reduces them altogether to surfaces--imparts the faculty of being applied most intimately to the surfaces of the aggregate (sand and gravel), and of adhering thereto with a force proportionate to the nicety and closeness of the contact. The study of this important branch of constructive science, -will be much simplified by reference to the following Tables of mortars ranging from 120 to nearly 4,000 years old. They will show the amount of.
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Product details

  • Paperback | 40 pages
  • 189 x 246 x 2mm | 91g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236566610
  • 9781236566614