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acid American Society apparatus approximately asbestos asphalt cement asphaltic concrete bituminous brick broken slag broken stone calcined carbon carbon disulphide cent clay clean coal coarse aggregate coat coke color concrete conform consist construction contain contractor cool cover crete crucible cubic cubic foot cylinder determined diameter distillation engineer Federal Specifications Board filter finished flash point flask following requirements grade gravel gypsum heat hydrated lime hydrochloric acid hydrometer inches joints laboratory layer less ment metal method of test mineral minutes mixed mixture moisture mold mortar Passing pavement percentage petroleum pipe placed plaster Portland cement pounds quicklime reinforcement removed residue roofing sample sand screen serial designation sieve slag slate Society for Testing solution specific gravity square feet standard method standard specifications strength subgrade suitable surface taken temperature Testing Materials thermometer thickness tile tion tube volume washed wearing course weight width wire
Σελίδα 288 - The cement shall be stored in such a manner as to permit easy access for proper inspection and identification of each shipment, and in a suitable weather-tight building which will protect the cement from dampness.
Σελίδα 297 - Packages varying more than 5 per cent from the specified weight may be rejected; and if the average weight of packages in any shipment, as shown by weighing 50 packages taken at random, is less than that specified, the entire shipment may be rejected.
Σελίδα 291 - ... and quickly formed into a ball with the hands, completing the operation by tossing it six times from one hand to the other, maintained about 6...
Σελίδα 306 - Concrete shall be handled from the mixer to the place of final deposit as rapidly as practicable by methods which shall prevent the separation or loss of the ingredients. It shall be deposited in the forms as nearly as practicable in its final position to avoid rehandling.
Σελίδα 317 - Standard Specifications and Tests for Portland Cement of the American Society for Testing Materials.
Σελίδα 295 - Cement shall not be rejected on account of failure to meet the fineness requirement if upon retest after drying at 100° C.
Σελίδα 355 - NH3, or until there is but a faint odor of it, and the precipitate iron and aluminum hydrates, after settling, are washed once by decantation and slightly on the filter. Setting aside the filtrate, the precipitate, is dissolved in hot dilute HC1, the solution passing into the beaker in which the precipitation was made. The aluminum and...
Σελίδα 248 - ... in accordance with the specifications and requirements, or used as directed for other purposes.
Σελίδα 291 - The consistency of standard mortar shall depend on the amount of water required to produce a paste of normal consistency from the same sample of cement. Having determined the normal consistency of the sample, the consistency of standard mortar made from the same sample shall be as indicated in Table I, the values being in percentage of the combined dry weights of the cement and standard sand. TABLE I— PERCENTAGE OF WATER FOR STANDARD MORTARS XII. DETERMINATION OF SOUNDNESS* 42.