The Construction of Roads and PavementsMcGraw-Hill Book Company, Incorporated, 1920 - 463 Seiten |
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aggregate amount applied asphalt cement asphaltic concrete binder binder course bituminous material brick pavement carbon disulphide cent center line chips clay clean coal tar coarse coat concrete base concrete road consists construction cost covered creosote creosote oil cross-section crown cubic cubic foot culvert curb depth distillation ditches drainage dumped durable dust earth roads edge elevation employed engineer exceed expansion joints filled filler finished flux foundation grade granite gravel grout gutter hauling heavy highway inch intersection laid layer less load macadam maintenance method mixed mixer mortar naphtha passing paving penetration placed Portland cement proportions quantity residue road surface roadway roller rolling sand cushion screen sections sheet asphalt side sieve slope soil specific gravity spread square yard stone street subgrade suitable temperature thickness traffic type of pavement usually vehicles wagon wearing course wearing surface weight width wood blocks
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Seite 427 - Penetration is defined as the consistency of a bituminous material, expressed as the distance that a standard needle vertically penetrates a sample of the material under known conditions of loading, time and temperature.
Seite 431 - ... the saucer and causes it to sink. The time in seconds between placing the apparatus on the water and when the water breaks through the...
Seite 187 - From the time the water is applied until the last drop is removed and floated into the joints of the brick pavement, the same must be kept in constant motion.
Seite 427 - The transfer dish for container shall be a small dish or tray of such capacity as will insure complete immersion of the container during the test. It shall be provided with some means which will insure a firm bearing and prevent rocking of the container.
Seite 435 - ... incandescent particles remain, thus leaving the mineral matter or ash, which can be weighed on cooling. The difference between the total weight of material insoluble in carbon disulphide and the weight of substance taken equals the total bitumen, and the percentage weights are calculated and reported...
Seite 428 - In making the test the sample shall be placed in the transfer dish filled with water from the water bath of sufficient depth to completely cover the container. The transfer dish containing the sample shall then be placed upon the stand of "This requirement is fulfilled by the American Can Co.'s ОШ style ointment box, deep pattern, 3-ounoe capacity.
Seite 441 - 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 431 - Meanwhile the other cup is filled about three-fourths full of water and placed on the tripod, and the water is heated to any desired temperature at which the test is to be made. This temperature should be accurately maintained, and should at no time throughout the entire test be allowed to vary more than one-half a degree Centigrade from the temperature selected.
Seite 427 - The sample shall be completely melted at the lowest possible temperature and stirred thoroughly until it is homogeneous and free from air bubbles. It shall then be poured into the sample container to a depth of not less than 15 mm (% inch).
Seite 445 - Refined Tar. — Tar freed from water by evaporation or distillation which is continued until the residue is of desired consistency; or a product produced by fluxing tar residuum with tar distillate.