Street Pavements and Paving Materials: A Manual of City Pavements : the Methods and Materials of Their ConstructionJohn Wiley & Sons, 1900 - 532 páginas |
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Página 16
... determine where one variety ends and the other begins . For this reason , and on account of the different definitions given to the same variety by equally good authorities , it seems proper to treat these rocks as one class , each ...
... determine where one variety ends and the other begins . For this reason , and on account of the different definitions given to the same variety by equally good authorities , it seems proper to treat these rocks as one class , each ...
Página 17
... determined principally by its essentials , the accessories have much to do with its quality . The color is generally fixed by the feldspar , but the mica is often a governing characteristic , the presence of muscovite making a granite ...
... determined principally by its essentials , the accessories have much to do with its quality . The color is generally fixed by the feldspar , but the mica is often a governing characteristic , the presence of muscovite making a granite ...
Página 28
... gray , yellow , and red . These colors are determined by the different combinations of iron ; the red being due to peroxides , and the yellow to hydrous peroxides . Some varieties will change 28 STREET PAVEMENTS AND PAVING MATERIALS .
... gray , yellow , and red . These colors are determined by the different combinations of iron ; the red being due to peroxides , and the yellow to hydrous peroxides . Some varieties will change 28 STREET PAVEMENTS AND PAVING MATERIALS .
Página 37
... determine its compressive strength gave an average of 7000 pounds per square inch with a maximum of 13,200 pounds . Experiments on 1 - inch cubes were also made to ascertain its fire - resisting qualities . Heated to 1000 ° F. and ...
... determine its compressive strength gave an average of 7000 pounds per square inch with a maximum of 13,200 pounds . Experiments on 1 - inch cubes were also made to ascertain its fire - resisting qualities . Heated to 1000 ° F. and ...
Página 55
... determined . It is doubtful , however , in the present stage of asphalt knowl- edge if any chemist would be willing ... determining the merits of a new asphalt is by giving it a trial . This requires time and careful experiments , for a ...
... determined . It is doubtful , however , in the present stage of asphalt knowl- edge if any chemist would be willing ... determining the merits of a new asphalt is by giving it a trial . This requires time and careful experiments , for a ...
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Términos y frases comunes
abutting prop Alumina amount asphalt pavement asphaltene asphaltic cement average binder bitumen bituminous rock blocks brick pavement broken stone Brooklyn carbon cent centre chemical City Engineer clay clean coal-tar cobblestone condition construction contract contractor cost course creosote cubic yard curb depth durable entire erty owners expense feet wide feldspar filled foundation grade granite gravel grooved rail grout gutter hard heat hornblende inches inches deep inches thick inches wide iron joints laid Large 12mo less lime limestone macadam ment method miles mineral mixed mixture mortar obtained oxide paving material paving-brick paving-cement petroleum placed Portland cement practically proper quantity quartz rail rammed repairs road roadway rock asphalt rolling sand sandstone screenings shows sidewalk Silica smooth specific gravity square inch square yard street street-car strength subgrade TABLE temperature tion track traffic trap-rock wearing surface width York York City
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Página 418 - ... any improper materials used in its construction, or by or on account of any act or omission of the said Contractor or his agents...
Página 539 - Factories 16mo, mor. 1 50 * Muir's History of Chemical Theories and Laws 8vo, 4 00 Mulliken's General Method for the Identification of Pure Organic Compounds. VoL I. Compounds of Carbon with Hydrogen and Oxygen. Large 8vo, 5 00 Vol. II. Nitrogenous Compounds. (In Preparation.) Vol. III. The Commercial Dyestuffs Large 8vo, 5 00 * Nelson's Analysis of Drugs and Medicines 12mo, 3 00 Ostwald's Conversations on Chemistry.