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28 days abscissae aggregate Amer annealed apparatus Apply the load axis Baker's Masonry Construction Balance beam Balance beam Balance beam brick briquette Brittle Materials c.c. graduate calibrated cast iron cement paste cent compressive strength compressometer cubic cylinders day in moist deflection deformation determine diagram diam diameter elastic limit elongation Experiment extensometer Flexure Test fracture gage length gravel hammer hard Hydraulic Hydraulic Hydraulic impact increment laboratory maximum load measured modulus of elasticity moist air moist closet moisture mold mortar normal consistency particles Portland cement Proportioning Concrete ratio rattler reading record represented by Curve rupture sample Screw Screw Screw shearing Sieve Analysis specific gravity speed square inch Steel castings straight line Strength of Materials surface tensile strength Tension Test test piece testing machine Testing Materials Tests of Wood tion torsion unit stress Vertical Vertical Vertical voids volume weight wire Wrought Iron yield point
Page 77 - ... and, in smoothing off, the trowel should be drawn over the mold in such a manner as to exert a moderate pressure on the excess material. The mold should be turned over and the operation repeated.
Page 73 - Section 37, 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 in.
Page 122 - 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.
Page 73 - C being 1 cm. in diameter for a distance of 6 cm., the other having a removable needle D, 1 mm. in diameter, 6 cm. long. The rod is reversible, and can be held in any desired position by a screw...
Page 120 - 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 119 - 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.
Page 121 - 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 3% has been made subsequent to calcination.
Page 73 - ... held in the other hand, completely filling the ring with paste; the excess at the larger end...