Rural Highway Pavements, Maintenance and Reconstruction: A Discussion of General Principles Illustrated by Current and Recommended PracticeMcGraw-Hill book Company, Incorporated, 1924 - 637 Seiten |
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Rural Highway Pavements, Maintenance and Reconstruction: A Discussion of ... Wilson G. Harger Keine Leseprobe verfügbar - 2015 |
Rural Highway Pavements, Maintenance and Reconstruction: A Discussion of ... Wilson G. Harger Keine Leseprobe verfügbar - 2018 |
Häufige Begriffe und Wortgruppen
amount approximately asphaltic cement asphaltic concrete average batch binder course bituminous macadam bituminous material block bottom course brick broken stone cement concrete cent chert Class II traffic clay clean coarse aggregate coat compacted concrete base concrete pavement construction Contractor cost cracks Crown crushed stone cubic foot cubic yard culverts curb depth distillation ditches dumped edge Engineer estimated expansion joints filled finished foundation grade gravel grout hauling highway inches laid less limestone loam macadam base macadam pavement maintenance maximum method mile mixer mortar necessary old macadam paving mixture pipe placed Portland cement reinforcement rigid pavement rock roller rolling sample sand cushion sand-clay satisfactory screen Section shoulders sieve slab slag soil specific gravity specifications spread square yard steel strength subbase subgrade Table temperature thickness top course trucks type of pavement uniform vehicles daily Waterbound macadam weight width
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Seite 533 - ... (a) A pat is then kept in air at normal temperature and observed at intervals for at least 28 days.
Seite 533 - F. as practicable, and observed at intervals for at least 28 days. (c) A third pat is exposed in any convenient way in an atmosphere of steam, above boiling water, in a loosely closed vessel for five hours. 23. These pats, to satisfactorily pass the requirements, shall remain firm and hard, and show no signs of distortion, checking, cracking, or disintegrating.
Seite 568 - The purposes of the inspection shall be to cull and reject pipes which, independent of the physical tests herein specified, fail to comply with, the requirements of these.
Seite 531 - The rate of rise of temperature shall be uniform and shall not be averaged over the period of the test. The maximum permissible variation for any minute period after the first three shall be 0.5° C.
Seite 245 - The quantity of broken-stone road with bituminous surface to be paid for under this item shall be the number of square yards, measured horizontally, satisfactorily completed in accordance with the specifications.
Seite 363 - The cement shall meet the requirements of the Standard Specifications for Portland Cement of the American Society for Testing Materials and adopted by this Association.
Seite 536 - A representative portion of the dry material weighing not less than 50 times the weight of the largest stone in the sample shall be selected from the sample and placed in the pan which has been dried and accurately weighed.
Seite 530 - As the temperature rises, they gradually and imperceptibly change from a brittle or exceedingly thick and slow flowing material to a softer and less viscous liquid. For this reason the determination of the softening point must be made by a fixed, arbitrary and closely defined method if the results obtained are to be comparable.
Seite 533 - 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.
Seite 208 - ... portion left to dry out before puddling is resumed. More screenings shall be added where necessary, and the sweeping, sprinkling, and rolling shall continue until a grout has been formed that shall fill all the voids and be pushed into a wave by the wheels of the roller. After the wave of grout has been produced over the whole section of the macadam this portion shall be left to dry out, after which it shall be opened to traffic. The macadam shall be repuddled and back-rolled on succeeding days...