Modern Methods of Waterproofing Concrete and Other Structures: A Condensed Statement of the Principles, Rules and Precautions to be Observed in Waterproofing and Dampproofing Structures and Structural Materials

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Norman W. Henley publishing Company, 1911 - Waterproofing - 2 pages
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Page 376 - Of this solution 3§ quarts are used for 2 bags of cement and twice its volume of sand. It will be observed that these processes again depend upon the precipitation of aluminium soap or of hydrated oxide of aluminium, the only difference being that, in these cases, the nrecipitate is mixt with the mortar instead of being deposited at the surface of the hardened material.
Page 340 - WATERPROOFING CONCRETE. By MYRON H. LEWIS. Modern Methods of Waterproofing Concrete and Other Structures. A condensed statement of the Principles, Rules, and Precautions to be Observed in Waterproofing and Dampproofing Structures and Structural Materials. Paper binding. Illustrated. Price 50 cents DICTIONARIES STANDARD ELECTRICAL DICTIONARY.
Page 365 - Just before the main cement coating is to be applied, the entire wall should be drenched and soaked to its full absorbing capacity. 3. Application of Coating. (a) Before the wall shows marked signs of drying a slush coating should be applied quickly and uniformly with a palmetto. This slush coating should be made by a thorough mixing of waterproofed cement in water, to the consistency of cream. (b) Before the slush coating has dried, the first application should be applied as a scratch coat, one-fourth...
Page 354 - It must not be affected by a 20 per cent, solution of ammonia, a 25 per cent solution of sulfuric acid, a 35 per cent, solution of muriatic acid, nor by a saturated solution of sodium chloride. It should show no hydrolytic decomposition when subjected, for a period of ten hours, to hourly immersions in water with alternate rapid drying by warm air currents.
Page 376 - Plastering, Plain and Decorative," Miller recommends painting the surface of the work with a hot mixture prepared by mixing 20 Ib. of chopt suet with 1 bushel of lime, and stirring up with boiling water. Professor Hatt states that with a mortar composed of 1 part of cement to...
Page 377 - ... fine particles of clay, inasmuch as no "electrolyte" is used; and in the other cases it is probable that the same kind of action takes place by precipitation of alumina, from the "electrolytic" solution, by calcium hydroxide, whether the electrolytic theory itself be correct or not. It may be remarkt that the use of pulverized clay for this purpose is old. "Lux," Patent No. 4606 of 1904. This material is prepared by pouring over 100 kilos of cement clinker (unground) 10 litres of boiling water...
Page 377 - Antihydrine, etc., for use on the interior surfaces of exposed walls or for exterior of foundations not subject to waterpressure. These are made up of specially selected asphalts dissolved in carbon bisulfide or some kindred hydrocarbon, the proportions varying according to the use to which same is to be put. Paraffine, or other mineral substances, dissolved in gasolene with the addition of resin as a hardening agent, proportions varying according to use. This is employed for surface application...
Page 376 - ... soap. The alum solution was used first. Cunningham proceeds on similar lines. He uses powdered alum equal to 1 per cent, of the combined weight of sand and cement. To the water used in the mix he adds 1 per cent, of yellow soap. Hawley employed a stock solution of 2 Ib. caustic potash, 5 Ib.
Page 367 - ... insulating film against rapid changes of temperature; and also to replace furring and lathing, as plaster may be directly applied thereon. This is particularly so in the case of brick walls. Furthermore, the material being protected from the elements, a long life is assured. The Sylvester Process. — This process has been principally employed and is mainly adapted to coating the surfaces of tanks, conduits, and other water-carrying structures, to render them tight. It has also been employed...
Page 375 - The surface of the rendering, composed according to one of the above formulas, is brusht with a solution of 1 Ib. "concentrated lye," 5 Ib. alum, and 2 gallons water, in the proportion of 1 pint of this solution to 5 Ib. of cement. In principle the above-named methods are alike, and all depend upon the precipitation within the surface pores of the concrete, or outer coat, of insoluble...

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