... feet. Toughness, as understood by road builders, is the adhesion between the crystal and fine particles of a rock, which gives it power to resist fracture when subjected to the blows of traffic. This important property, while distinct from hardness,... Bulletin - Seite 263von North Carolina. Division of Mineral Resources, North Carolina. Department of Conservation and Development - 1906Vollansicht - Über dieses Buch
| Ira Osborn Baker - 1913 - 700 Seiten
...rubbing or the abrasive action of wheels and horses' feet; while toughness is the adhesion between particles of a rock which gives it power to resist fracture when subjected to the blows of traffic. A stone may be hard and brittle, and be quickly pounded to pieces in the road, as... | |
| Archer Butler Hulbert - 1905 - 242 Seiten
...but only three need be mentioned here. They are hardness, toughness, and cementing or binding power. By hardness is meant the power possessed by a rock...wheels and horses' feet. Toughness, as understood by road-builders, is the adhesion between the crystal and fine particles of a rock, which gives it power... | |
| Indiana. Department of Geology and Natural Resources - 1905 - 1534 Seiten
...toughness and cementing or binding power. Others, less important, are power of absorption and density. By hardness is meant the power possessed by a rock...caused by the abrasion of wheels and horses' feet. A rock for a road of light or medium traffic should not be too hard, else the amount of fine dust worn... | |
| Archer Butler Hulbert - 1905 - 230 Seiten
...but only three need be mentioned here. They are hardness, toughness, and cementing or binding power. By hardness is meant the power possessed by a rock...wearing action caused by .the abrasion of wheels and t horses' feet. Toughness, as understood k by road-builders, is the adhesion between the crystal and... | |
| New Jersey Geological Survey - 1907 - 276 Seiten
...Director of the Office of Public Roads i1 1 Yearbook of the US Department of Agriculture for 1900, p. 351. "By hardness is meant the power possessed by a rock...understood by road builders, is the adhesion between the crystals and fine particles of a rock, which gives it power to resist fracture when subjected to the... | |
| New Jersey Geological Survey, 1863-1915 - 1907 - 276 Seiten
...of the Office of Public Roads : J 1 Yearbook of the US Department of Agriculture for 1900, p. 351. "By hardness is meant the power possessed by a rock...understood by road builders, is the adhesion between the crystals and fine particles of a rock, which gives it power to resist fracture when subjected to the... | |
| Charles Edward Morrison - 1908 - 356 Seiten
...organic acids produced by the decomposition of excretal matters always present upon roadways in use. " By hardness is meant the power possessed by a rock...understood by road builders, is the adhesion between the crystals and fine particles of a rock, which gives it power to resist fracture when subjected to the... | |
| Charles Edward Morrison - 1908 - 356 Seiten
...wheels and horses' feet. Toughness, as understood by road builders, is the adhesion between the crystals and fine particles of a rock, which gives it power to resist fracture when subjected to the blows of traffic. This important property, while distinct from hardness, is yet intimately associated... | |
| Ira Osborn Baker - 1908 - 702 Seiten
...rubbing or the abrasive action of wheels and horses' feet; while toughness is the adhesion between particles of a rock which gives it power to resist fracture when subjected to the blows of traffic. A stone may be hard and brittle, and be quickly pounded to pieces in the road, as... | |
| Willet Martin Hays - 1910 - 424 Seiten
...but only three need be mentioned here. They are hardness, toughness, and cementing or binding power. By hardness is meant the power possessed by a rock...it power to resist fracture when subjected to the blows of traffic. This important property, while distinct from hardness, is yet intimately associated... | |
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