Waterproofing Engineering for Engineers, Architects, Builders, Roofers and Waterproofers

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John Wiley & sons, Incorporated, 1919 - 442 Seiten
 

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Seite 193 - One hundred cubic centimeters of chemically pure carbon disulphide is poured into the flask in small portions, with continual agitation, until all lumps disappear and nothing adheres to the bottom. The flask is then corked and set aside for 15 minutes.
Seite 272 - The sample shall be a fair average of the shipment. Three per cent of the packages shall be sampled. The sample shall be taken from the surface to the center of the package. A 2-lb.
Seite 217 - The upper surface of the cover should burn clear, but the under surface should remain covered with carbon. To find Volatile Combustible Matter, subtract the per cent.
Seite 414 - Blown Petroleums. — Semi-solid or solid products produced primarily by the action of air upon liquid native bitumens which are heated during the blowing process.
Seite 415 - Carbenes: — The components of the bitumen in petroleums, petroleum products, malthas, asphalt cements and solid native bitumens, which are soluble in carbon disulphide but insoluble in carbon tetrachloride.
Seite 413 - Solid or semi-solid native bitumens, solid or semisolid bitumens obtained by refining petroleum, or solid or semi-solid bitumens which are combinations of the bitumens mentioned with petroleums or derivatives thereof, which melt upon the application of heat and which consist of a mixture of hydrocarbons and their derivatives of complex structure, largely cyclic and bridge compounds.
Seite 273 - Samples which represent rejected hydrated lime shall be preserved in airtight containers for five days from the date of the test report. In case of dissatisfaction with the results of the tests, the manufacturer may make claim for a rehearing within that time.

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