Bulletin, Band 8American Society for Testing and Materials., 1908 Vols. 1-61 include reports of the 1st-64th annual meetings, committee reports and technical papers; v.16-38 include also "New and revised tentative standards [and] tentative revisions of standards" (varies slightly) |
Inhalt
| 7 | |
| 12 | |
| 15 | |
| 19 | |
| 40 | |
| 48 | |
| 74 | |
| 109 | |
| 418 | |
| 429 | |
| 454 | |
| 469 | |
| 480 | |
| 494 | |
| 500 | |
| 518 | |
| 128 | |
| 143 | |
| 190 | |
| 196 | |
| 202 | |
| 231 | |
| 238 | |
| 247 | |
| 266 | |
| 282 | |
| 336 | |
| 345 | |
| 369 | |
| 379 | |
| 386 | |
| 397 | |
| 403 | |
| 535 | |
| 541 | |
| 558 | |
| 568 | |
| 576 | |
| 582 | |
| 593 | |
| 601 | |
| 611 | |
| 620 | |
| 626 | |
| 636 | |
| 653 | |
| 676 | |
| 691 | |
| 700 | |
| 702 | |
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
acid American Railway Association anvil applied average bars beams bloom boiler briquettes carbon cast cause cement cent chemical coal columns compression compression members concrete copper corrosion crack curve deflection determined diameter drop test drop-testing machine effect elastic limit electrolytic engineers extensometer failure ferrite fiber fracture head heat hydrated lime inch increase ingot inspection investigation iron and steel laboratory load magnetizing manganese bronze manganese sulphide manufacturers metal method modulus mortar obtained paint pearlite percentage phosphorus pigment pitting plates Portland cement pounds practice present railroad REPORT OF COMMITTEE resistance rolled samples sand shear shown in Fig sieve skelp slag Society specific gravity specimen speed Standard Specifications steel pipe steel rail strain streaks stress structure Sub-Committee sulphur surface Table temperature tensile strength test pieces testing machine Testing Materials tion tube Watertown Arsenal weight wheel wire wrought iron ΙΟ
Beliebte Passagen
Seite 162 - Test pieces should be broken as soon as they are removed from the water. Care should be observed in centering the briquettes in the testing machine, as cross-strains, produced by improper centering, tend to lower the breaking strength; the load should not be applied too suddenly, as it may produce vibration, the shock from which often breaks the briquette before the ultimate strength is reached.
Seite 145 - All tests shall be made in accordance with the methods proposed by the Committee on Uniform Tests of Cement...
Seite 162 - J cm. (0.49 in.) thick at the center, and tapering to a thin edge, should be made, upon a clean glass plate [about 10 cm. (3.94 ins.) square], from cement paste of normal consistency. 49. — Normal Test. — A pat is immersed in water maintained as near 21° C. (70 ° F.) as possible for 28 days, and observed at intervals.
Seite 160 - A moist closet or chamber is so easily devised that the use of the damp cloth should be abandoned if possible. Covering the test pieces with a damp cloth is objectionable, as commonly used, because the cloth may dry out unequally, and in consequence the test pieces are not all maintained under the same conditions.
Seite 162 - 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.
Seite 158 - For the present, the Committee recommends the natural sand from Ottawa, 111., screened to pass a sieve having 20 meshes per linear inch and retained on a sieve having 30 meshes per linear inch; the wires to have diameters of 0.0165 and 0.0112 in., respectively, ie, half the width of the opening in each case.
Seite 162 - Methods. — Tests for constancy of volume are divided into two classes: (1) normal tests, or those made in either air or water maintained at about 21° C.
Seite 162 - Fig. 5, .is recommended. This clip is to be used" without cushioning at the points of contact with the, test specimen. The bearing at each point of contact should be J-inch wide, and the distance between the center of contact on the same clip should be 1 } inches.
Seite 153 - ... 2. The sample shall be a fair average of the contents of the package; it is recommended that, where conditions permit, one barrel in every ten be sampled. 3. All samples should be passed through a sieve having twenty meshes per linear inch, in order to break up lumps and remove foreign material; this is also a very effective method for mixing them together in order to obtain an average. For determining the characteristics of a shipment of cement, the individual samples may be mixed and the average...
Seite 157 - The setting is said to have commenced when the needle ceases to pass a point 5 mm. (0.20 in.) above the upper surface of the glass plate, and is said to have terminated the moment the needle does not sink visibly into the mass.