Bulletin of the United States Geological SurveyThe Survey., 1908 |
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15 sonuçtan 1-5 arası sonuçlar
Sayfa 17
... unit of volume for cement is 100 pounds per cubic foot . The typical Portland cement is to be prepared by thoroughly mixing a number of brands , each of which must meet the following requirements : Specific gravity , not less than 3.10 ...
... unit of volume for cement is 100 pounds per cubic foot . The typical Portland cement is to be prepared by thoroughly mixing a number of brands , each of which must meet the following requirements : Specific gravity , not less than 3.10 ...
Sayfa 18
... Unit of volume for cement , 100 pounds per cubic foot . B. Physical tests in laboratory . — The laboratory tests include the following determi- nations , those designated as items 1 to 6 being each made at the ages of 30 , 90 , 180 ...
... Unit of volume for cement , 100 pounds per cubic foot . B. Physical tests in laboratory . — The laboratory tests include the following determi- nations , those designated as items 1 to 6 being each made at the ages of 30 , 90 , 180 ...
Sayfa 24
... the time of testing and the actual unit stress a SOUNDNESS TESTS OF CEMENT . is computed . The 22 STRUCTURAL - MATERIALS TESTING LABORATORIES . Physical tests of cement Strength tests of neat cement and Ottawa sand mortar.
... the time of testing and the actual unit stress a SOUNDNESS TESTS OF CEMENT . is computed . The 22 STRUCTURAL - MATERIALS TESTING LABORATORIES . Physical tests of cement Strength tests of neat cement and Ottawa sand mortar.
Sayfa 34
... unit absorption , or the weight in pounds of water absorbed per pound of dry material , is the difference between the weight of the surface - dried material after the test and of the thoroughly dried material divided by the weight of ...
... unit absorption , or the weight in pounds of water absorbed per pound of dry material , is the difference between the weight of the surface - dried material after the test and of the thoroughly dried material divided by the weight of ...
Sayfa 37
... unit absorption . The original dry weight is used because small particles are apt to be lost during the surface drying . Computations . — The quantities measured and recorded are ( 1 ) the weight of the original dry stone , ( 2 ) the ...
... unit absorption . The original dry weight is used because small particles are apt to be lost during the surface drying . Computations . — The quantities measured and recorded are ( 1 ) the weight of the original dry stone , ( 2 ) the ...
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absorption aggregate batch report beam section bending bending moment bond test pieces bottom cent Chicago cinders compressive strength Computations concrete beams consistency cubic foot deformations deformeters determined dry material elastic limit equipment feet flask Form gage length grams Gravel inches in diameter inches long Interior view investigations layer limestone Louis Louisiana Purchase Exposition machine ready manufactured by Tinius Meramec River methods micrometer mixer mixing modulus of elasticity moist room molds mortar mortars and concretes Olsen & Co percentage of voids permeability Philadelphia placed plain beams pounds per square proportions Reclamation Service reinforced concrete rods sample screen shear shown in Pl sieve silt span specific gravity spherical bearing square inch steel stirrups stone STORAGE STRUCTURAL-MATERIALS TESTING LABORATORIES surface tamped tensile test pieces testing machine Tinius Olsen tion Total Transverse strength transverse tests typical Portland cement UNITED STATES GEOLOGICAL Weight per cubic
Popüler pasajlar
Sayfa 24 - All tests shall be made in accordance with the methods proposed by the Committee on Uniform Tests of Cement...
Sayfa 17 - Sand. 7 days (1 day in moist air, 6 days in water) 200 Ibs.
Sayfa 79 - Method. — As a method to be followed for the analysis of cement, that proposed by the committee on uniformity in the analysis of materials for the...
Sayfa 17 - 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...
Sayfa 17 - 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.
Sayfa 4 - ... the report of the joint committee on concrete and reinforced concrete of the American Society of Civil Engineers, American Society for Testing Materials, American...
Sayfa 5 - Concrete and Reinforced Concrete was formed by the union of Special Committees appointed in 1903 and 1904 by the American Society of Civil Engineers, the American Society for Testing Materials, the American Railway Engineering and Maintenance of Way Association (now the American Railway Engineering Association), and the Association of American Portland Cement Manufacturers (now the Portland Cement Association).
Sayfa 17 - Portland cement is to be prepared by thoroughly mixing a number of brands, each of which must meet the following requirements: Specific gravity, not less than 3.10. Fineness, residue not more than 8 per cent on No. 100 nor 25 per cent on No.
Sayfa 17 - These pats, to satisfactorily pass the requirements, shall remain firm and hard and show no signs of distortion, checking, cracking, or disintegrating.
Sayfa 3 - The original advisory board consisted of the following representatives of the various national societies and Government bureaus. The American Institute of Mining Engineers: John Hays Hammond, past president, New York; Robert W. Hunt (Robert W. Hunt & Co., testing engineers, Chicago, Pittsburg, and New York), Chicago, 111. ; BF Bush, manager and vice president, Western Coal and Mining Company, St. Louis, Mo. The American Institute of Electrical Engineers: Francis B. Crocker, professor of electrical...