 | 1884 - 924 páginas
...generally contains water, light oils, coke and a gummy substance soluble in water. This petroleum oil is freed from all impurities and brought to a specific gravity of from 18° to 22° Beaume, and a fire test of 250° F. By melting and mixing these two hydrocarbons, petroleum... | |
 | 1899 - 1204 páginas
...92 to 88 parts. The paving cement shall be made from refined Trinidad asphalt and heavy petroleum; must be freed from all Impurities, and brought to a specific gravity of from 18 to 22 degrees Boaume, and a fire test of 250 degrees Fahrenheit. The blocks are to be lalil at right... | |
 | William Rich Hutton - 1889 - 320 páginas
...of lime. The asphaltum must be refined and brought to a uniform standard of purity and gravity. The petroleum oil must be freed from all impurities and brought to a specific gravity of eighteen to twenty-two degrees Beaume, and stand a fire test of two hundred and fifty degrees Fahrenheit.... | |
 | 1889 - 814 páginas
...generally contains water, light oils, coke and a gummy substance soluble in water ; the petroleum oil is freed from all impurities and brought to a specific gravity of from 18° to 22° Beaume, and a fire test of 250° Fahrenheit. By melting and mixing petroleum oil 20 parts and... | |
 | Edward Gurley Love - 1890 - 448 páginas
...gravity, of quality to be approved by the Commissioner of Public Works. The heavy petroleum oil shall be freed from all impurities and brought to a specific gravity of from 18 to 22° Beaume, and fire test of 250° Fahr. From these two hydro-carbons shall be manufactured an... | |
 | 1891 - 1084 páginas
...a quality in character equivalent to that prescribed for standard asphalt pavements. The petroleum must be freed from all impurities and brought to a specific gravity of from 18° to 22° Beauuie, and a fire test of 250° Fahrenheit. The ri^ht is reserved to inspect the manufacture... | |
 | 1892 - 396 páginas
...uniform standard of purity and gravity such as renders it best adapted for paving purposes. The heavy petroleum oil must be freed from all impurities and brought to a specific gravity best suited for paving purposes. From the ingredients above mentioned shall be prepared the best pavement... | |
 | John Butler Johnson - 1895 - 440 páginas
...to a uniform standard of purity and gravity of a quality to be approved by the engineer. The heavy petroleum oil must be freed from all impurities and brought to a specific gravity of from eighteen to twenty two degrees Beaume, and a fire test of two hundred and fifty degrees Fahrenheit.... | |
 | John Butler Johnson - 1895 - 444 páginas
...to a uniform standard of purity and gravity of a quality to be approved by the engineer. The heavy petroleum oil must be freed from all impurities and brought to a specific gravity of from eighteen to twenty two degrees Beaume, and a fire test of two hundred and fifty degrees Fahrenheit.... | |
 | New York (State). State Engineer and Surveyor - 1897 - 1272 páginas
...the engineer, the same as in the case of asphalt used for asphaltic concrete and masonry. The heavy petroleum oil must be freed from all impurities and brought to a specific gravity of 18° to 20° Baume, and a fire test of 250° F. From these two hydro-carbons an asphaltic cement shall... | |
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The heavy petroleum oil must be freed from all impurities and brought to a specific gravity of from eighteen to twenty two degrees Beaume, and a fire test of two hundred and fifty degrees Fahrenheit. 
