A Text-book on Roads and Pavements |
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Common terms and phrases
abrasion amount applied asphalt cement asphaltenes binder binder course bitumen blocks brick pavements broken stone calcium chloride carbon disulphide carbon tetrachloride cent character chips clay coal tar coating commonly compacted concrete condition considerable consists cost country roads creosote oil culvert curb depth determined diameter distillation drain drainage dust earth road employed expansion joints feet filled filler foundation frequently gilsonite grade gradient grams gravel gutters hard heated heavy hydrocarbons inches inches thick instances joints laid layer less limestone load macadam macadam roads malthenes ment mineral mixed mixture mortar naphtha necessary obtained ordinary pavement paving penetration percentage petroleums placed Portland cement proper purpose quantity rail residue resistance road materials road surface road-bed roadway rock rolled roller sand screenings side slope smooth soft soluble sometimes specific gravity sprinkling street sufficient tars temperature tion traffic trench uniform usually vary voids wear weight width
Popular passages
Page 343 - A third pat is exposed in any convenient way in an atmosphere of steam, above boiling water, in a loosely closed vessel for 5 hours. These pats, to satisfactorily pass the requirements, shall remain firm and hard, and show no signs of distortion, checking, cracking or disintegrating.
Page 341 - This term is applied to the finely pulverized product resulting from the calcination to incipient fusion of an intimate mixture of properly proportioned argillaceous and calcareous materials, and to which no addition greater than three per cent has been made subsequent to calcination.
Page 342 - No. 100, and not more than 25% on the No. 200 sieve. TIME OF SETTING. It shall not develop initial set in less than thirty minutes; and must develop hard set in not less than one hour, nor more than ten hours.
Page 239 - ... per cent of combined carbon. The faces of the polygon must be smooth and give uniform bearing for the staves. To secure the desired uniform bearing the faces of the head may be ground or machined. The Staves — The staves shall be made of six...
Page 342 - Ibs. 7 days (1 day in moist air, 6 days in water) 500 Ibs. 28 days (1 day in moist air, 27 days in water) 600 Ibs. One Part Cement, Three Parts Standard Ottawa Sand.
Page 342 - Pats of neat cement about three inches in diameter, one-half inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four hours.
Page 348 - The ingredients of the concrete shall be thoroughly mixed, sufficient water being added to obtain the desired consistency, and the mixing continued until the materials are uniformly distributed, and each particle of the fine aggregate is thoroughly coated with cement, and each particle of the coarse aggregate is thoroughly coated with mortar.
Page 245 - Name of firm furnishing sample Name of the firm manufacturing sample Street or job which sample represents Brands or marks on the brick Quantity furnished Drying treatment Date received Date tested Length Breadth Thickness STANDARDIZATION DATA. Number of charges tested since last inspection...
Page 254 - After this first passing of the roller the pace may be quickened and the rolling continued until each brick is firmly embedded in the sand cushion.
Page 325 - BLOCKS Upon the bed thus prepared the blocks shall be carefully set with the fiber of the wood vertical in straight parallel courses at right angles to the curb, except that one row of block shall be placed parallel with the curb and three-quarters of an inch therefrom.