Tests of the Absorptive and Permeable Properties of Portland Cement, Mortars and Concretes: Together with Test of Dampproofing and Waterproofing Compounds and Materials
Tests of the Absorptive and Permeable Properties of Portland Cement, Mortars and Concretes: Together with Test of Dampproofing and Waterproofing Compounds and Materials
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. 1912 Excerpt: ...greater part of the compound is entirely inert, being china clay and hydrated lime. Compound No. 28 Per cent Silica 46. 66 Alumina 16. 71 Iron oxide 93 Lime." ii. 97 Magnesia.72 Sulphuric anhydride 2. 73 Soda 34 Potassium oxide i. 44 Ignition loss 18. 64 100. 14 (Extracted by alcohol=i4.69 per cent=a resinate of potash ...
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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. 1912 Excerpt: ...greater part of the compound is entirely inert, being china clay and hydrated lime. Compound No. 28 Per cent Silica 46. 66 Alumina 16. 71 Iron oxide 93 Lime." ii. 97 Magnesia.72 Sulphuric anhydride 2. 73 Soda 34 Potassium oxide i. 44 Ignition loss 18. 64 100. 14 (Extracted by alcohol=i4.69 per cent=a resinate of potash.) (c) Water-Repelling Compounds.--In this class of compounds we have stearic acid combined either with soda and potash or lime. The amount of these necessary to combine with the acid is not very great, in no case exceeding 7.5 per cent. Consequently it can be seen that the greater part of the material is hydrated lime and magnesia lime. These act simply as void fillers. As a whole, they are inert toward the cement and water, according to the admissions of the manufacturers. However, those in which the stearic acid is combined with the soda and potash must react with the lime of the compound to form the more insoluble lime soap, or else they are valueless, owing to the ready solubility of the former soap in water. The substance referred to as stearic acid is of course not a chemically pure stearic acid, or even in some cases a commercially pure article, but it is fat acids, obtained from various sources, which are solid at temperatures higher than ordinary room temperatures. The characteristics of the acids used in the various compounds are given in the table "Fat acids." Much difficulty was experienced in separating this small amount of organic material from such a large amount of inorganic, especially without oxidation or overheating. S Compounds Nos. 29 and 33 combined with sodium and potassium; Compounds Nos. 30, 31, 32, and 33 combined with calcium. (d) Waterproofing Cements.--Two waterproofing cements have been investigate...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
All Editions of Tests of the Absorptive and Permeable Properties of Portland Cement, Mortars and Concretes: Together with Test of Dampproofing and Waterproofing Compounds and Materials
