 F., until all the water has been driven off. Crude, natural, solid asphalt shall be construed to mean any natural mineral bitumen, either pure or mixed with foreign matter, from which through natural causes in the process of time the light oils have been...  Civil Engineering Specifications and Contracts - Page 114by Richard I. D. Ashbridge - 1914 - 188 pagesFull view - About this book
 | Municipal engineering - 1910 - 540 pages
...heating, if requiring refinement, crude, natural, solid asphalt, to a temperature of not over 400 degrees F. until all the water has been driven off. Crude,...has a consistency harder than 100 penetration at 77 degrees F. At least 98% per cent, of the contained bitumen in the refined asphalt which is soluble... | |
 | Roads - 1910 - 648 pages
...heating, if requiring refinement, crude, natural, solid asphalt, to a temperature of not over 400 degrees F. until all the water has been driven off. Crude,...has a consistency harder than 100 penetration at 77 degrees F. At least 98% per cent, of the contained bitumen in the refined asphalt which is soluble... | |
 | Association for Standardizing Paving Specifications - Pavements - 1911 - 112 pages
...heating, if requiring refinement, crude, natural, solid asphalt, to a temperature of not over 400 degrees F. until all the water has been driven off. Crude,...has a consistency harder than 100 penetration at 77 degrees F. At least 98^ per cent. of the contained bitumen in the refined asphalt which is soluble... | |
 | Association for Standardizing Paving Specifications - Pavements - 1911 - 154 pages
...requiring refinement, crude, natural, solid asphalt, to a temperature of not over 450 degrees Fahr. until all the water has been driven off. Crude, natural,...has a consistency harder than 100 penetration at 77 degrees Fahr. At least 98^ per cent of the contained bitumen in the refined asphalt which is soluble... | |
 | George William Tillson - Pavements - 1912 - 700 pages
...natural or asphalt produced from the distillation of petroleum oil. Crude, natural, solid asphalt shall mean any natural mineral bitumen, either pure or mixed...bitumen in the refined asphalt which is soluble in carbon bisulphide shall be soluble in cold carbon tetrachloride. Asphalt from Petroleum Oil. — Asphalt... | |
 | George William Tillson - Pavements - 1912 - 702 pages
...natural or asphalt produced from the distillation of petroleum oil. Crude, natural, solid asphalt shall mean any natural mineral bitumen, either pure or mixed...bitumen in the refined asphalt which is soluble in carbon bisulphide shall be soluble in cold carbon tetrachloride. Asphalt from Petroleum Oil. — Asphalt... | |
 | Association for Standardizing Paving Specifications - Pavements - 1912 - 180 pages
...heating, if requiring refinement, crude, natural, solid asphalt, to a temperature of not over 450 degrees F., until all the water has been driven off. Crude,...has a consistency harder than 100 penetration at 77 degrees F. At least 98% per cent of the contained bitumen in the refined asphalt which is soluble in... | |
 | Association for Standardizing Paving Specifications - Pavements - 1912 - 180 pages
...heating, if requiring refinement, crude, natural, solid asphalt, to a temperature of not over 450 degrees F., until all the water has been driven off. Crude,...has a consistency harder than 100 penetration at 77 degrees F. At least 98^ per cent of the contained bitumen in the refined asphalt which is soluble in... | |
 | Association for Standardizing Paving Specifications - Pavements - 1913 - 202 pages
...water has been driven off. Crude, natural, solid asphalt shall be construed to mean any natural solid mineral bitumen, either pure or mixed with foreign...has a consistency harder than 100 penetration at 77 degrees F. At least 98y2 per cent of the contained bitumen in the refined asphalt which is soluble... | |
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