Bulletin of the United States Geological SurveyThe Survey., 1908 |
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20 sonuçtan 1-5 arası sonuçlar
Sayfa 33
... surface- dried sand after the test , and ( 4 ) the weight of the thoroughly dried sand after the test . The percentage of voids is obtained by correcting the measured vol- ume of water for that filling the pipes and absorbed by the ...
... surface- dried sand after the test , and ( 4 ) the weight of the thoroughly dried sand after the test . The percentage of voids is obtained by correcting the measured vol- ume of water for that filling the pipes and absorbed by the ...
Sayfa 34
... surface drying and again after thoroughly drying it over a hot plate . Computations . The percentage of moisture is found by dividing the difference in weight between an ordinary sample before and after dry- ing by the weight of the dry ...
... surface drying and again after thoroughly drying it over a hot plate . Computations . The percentage of moisture is found by dividing the difference in weight between an ordinary sample before and after dry- ing by the weight of the dry ...
Sayfa 37
... surface drying . Computations . — The quantities measured and recorded are ( 1 ) the weight of the original dry stone , ( 2 ) the weight of the stone and tin vessel suspended in air and ( 3 ) in water , ( 4 ) the weight of the surface ...
... surface drying . Computations . — The quantities measured and recorded are ( 1 ) the weight of the original dry stone , ( 2 ) the weight of the stone and tin vessel suspended in air and ( 3 ) in water , ( 4 ) the weight of the surface ...
Sayfa 38
... surface - dried sand ; ( 4 ) weight of dry sand ; ( 5 ) volume of sand and water , read on the neck of the flask . From these data , the original weight in grams of the dry sand , the weight in grams of water absorbed per gram of dry ...
... surface - dried sand ; ( 4 ) weight of dry sand ; ( 5 ) volume of sand and water , read on the neck of the flask . From these data , the original weight in grams of the dry sand , the weight in grams of water absorbed per gram of dry ...
Sayfa
... surface of the mortar in the cylinder will be tamped . The table top is of slate . Method . The required proportions of the dry material are carefully weighed out , and water is added to form a normal consistency . The mixing is ...
... surface of the mortar in the cylinder will be tamped . The table top is of slate . Method . The required proportions of the dry material are carefully weighed out , and water is added to form a normal consistency . The mixing is ...
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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...