A Treatise on Concrete, Plain and Reinforced: Materials, Construction, and Design of Concrete and Reinforced ConcreteJ. Wiley & Sons, 1905 - 585 стор. |
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Загальні терміни та фрази
absolute volume adhesion aggregate arch average barrel beam briquettes broken stone cement mortar Civil Engineers coarse column compressive strength consistency construction containing cracks crete crushed crusher cubes cubic feet cubic foot cubic yard curve density determined diagram diameter employed experiments factor of safety Feret formula grains gravel layers lime load masonry mass materials measure mechanical analysis metal method mixed mixer mixture modulus of elasticity moisture mold Natural cement neat cement neutral axis parabola particles percentage of voids placed Portland cement pounds per square Prof proportions quantity ramming ratio reinforced concrete rods rubble sand and stone Sanford E screened shoveled shown in Fig sieve slabs Society of Civil specific gravity specimens square inch steel strength of concrete stress surface tensile strength tension tests thick volume of concrete wall Watertown Arsenal weight yard of concrete
Популярні уривки
Сторінка 29 - All tests shall be made in accordance with the methods proposed by the Committee on Uniform Tests of Cement of the American Society of Civil Engineers, presented to the Society January 21, 1903, and amended January 20, 1904, with all subsequent amendments thereto.
Сторінка 73 - The sand and cement should be thoroughly mixed dry. The mixing should be done on some non-absorbing surface, preferably plate glass. If the mixing must be done on an absorbing surface it should be thoroughly dampened prior to use.
Сторінка 32 - These pats are observed at intervals for at least 28 days, and, to satisfactorily pass the tests, should remain firm and hard and show no signs of distortion, checking, cracking or disintegrating.
Сторінка 69 - ... cm. (0.39 in.) in diameter, the cap, rod and cylinder weighing 300 gr. (10.58 oz.). The rod, which can be held in any desired position by a screw (F) carries an indicator, which moves over a scale (graduated to centimeters) attached to the frame (K). The paste is held by a conical, hard-rubber ring (I), 7 cm.
Сторінка 30 - 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. These pats, to satisfactorily pass the requirements, shall remain firm and hard and show no signs of distortion, checking, cracking, or disintegrating.
Сторінка 77 - Fahr.) and upward. The test pieces should be allowed to remain 24 hours in moist air before immersion in water or steam, or preservation in air.
Сторінка 548 - Recent investigations have shown that large errors in results are often due to the use of impure distilled water and reagents. The analyst should, therefore, test his distilled water by evaporation and his reagents by appropriate tests before proceeding with his work.
Сторінка 70 - The paste is of normal consistency when the cylinder penetrates to a point in the mass 10 mm. (0.39 in.) below the top of the ring. Great care must be taken to fill the ring exactly to the top.
Сторінка 40 - Finished bars shall be free from injurious seams, flaws or cracks, and have a workmanlike finish.
Сторінка 30 - FINENESS. It shall leave by weight a residue of not more than 8 per cent on the No. 100, and not more than 25 per cent on the No. 200 sieve.