The Brickbuilder Volume 6

The Brickbuilder Volume 6

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1897 edition. Excerpt: ...8.. Carbonic Acid CO, I 45 3 5 _ _ anCl_Witer-. 30.95 25.90 26.30 31.74 34.81 24.40 34.1: 33.00 S1l1ca_S1O, ... 21.41 33.30 27.7; 10-81 15-97 23.7: 17.01 11.80 Alumina Al, O, 3 96 7.35;_;3 3 35 3 70 _ 10-09 14-19 1-59 Iron Oxide Fe, O, .88 2 41 5 22 1.31; 3.10 Sulphuric Acid SO, .06.50 i.71 1.53 1.81 T-ital Carbonatea. 67.26 54.86 56.72 68.44 75.21) 40,13 74.15 65.76 Insoluble in Acid. 29.21 35.01 40.15 27.25 20.15 47.72 22.06 23.9; Carbonate of Carbonate of Total Alumina Silica Insolu-Lime Magnesia Carbonate: and Iron ble Oxides Highest.... 63.75 32.8.4 75.20 17.50 33.80 47.72 Lowest..... 35.59 z,31 54,86 4,84 5_73;, _5 The most distinctive feature in the composition of hydraulic limestones, and one which enables them to be at once divided into two classes, is a marked difference in the amount of carbonate of magnesia which they contain. In the one class it is small, not exceeding 3 or 4 per cent; in the other from 15 to 35 per cent. is found. VVe have, therefore, two kinds of natural cements, lime and magnesian. Vith a few exceptions the hydraulic limestones of this country, used for making natural cement, are magnesian. In the Lehigh Valley the stone is not magnesian, and the same is the case in the upper Potomac Valley. Some of the deposits of the Vest are also nearly straight limestone. Considering their source the greater portion of natural cements, probably over 90 per cent., appear to be made from magnesian limestone. The rock from which the various Rosendale and Louisville cements are made, which alone make up a large part of our product, contains from 15 to 25 per cent. of magnesian carbonate.. The amount of the two carbonates in the limestones is very variable, reaching from 54 to 75 per cent. The silicates and silica may be presshow more

Product details

  • Paperback | 286 pages
  • 189 x 246 x 15mm | 513g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236761405
  • 9781236761408