Circular of the Bureau of Standards, Masalah 24U.S. Government Printing Office, 1922 |
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Halaman 83
... concrete beams under load . This series consisted of tests of gravel , granite , limestone , and cinder concrete , with seven percent- ages of reinforcement varying from 0.5 to 2 per cent . Beams were accompanied by cylindrical and ...
... concrete beams under load . This series consisted of tests of gravel , granite , limestone , and cinder concrete , with seven percent- ages of reinforcement varying from 0.5 to 2 per cent . Beams were accompanied by cylindrical and ...
Halaman 84
... Concrete .. .Rudolph J. Wig NATURE OF TESTS . - Results of tests made to determine the accelerating action of steam on the hardening of Portland cement mortar and concrete . Tests were made varying the steam pressure , duration of ...
... Concrete .. .Rudolph J. Wig NATURE OF TESTS . - Results of tests made to determine the accelerating action of steam on the hardening of Portland cement mortar and concrete . Tests were made varying the steam pressure , duration of ...
Halaman 85
... concrete test pieces to sea water at a branch laboratory established at Atlantic City , N. J. RESULTS . - Tentative conclusions are drawn showing that concrete is subject to disintegration by the mechanical force exerted by the ...
... concrete test pieces to sea water at a branch laboratory established at Atlantic City , N. J. RESULTS . - Tentative conclusions are drawn showing that concrete is subject to disintegration by the mechanical force exerted by the ...
Halaman 86
... Concrete . ... E . B. Rosa , Burton McCollum , and O. S. Peters Description of experimental researches on the effects of electric currents on concrete . The investigation has consisted of three parts : ( a ) Laboratory investigations ...
... Concrete . ... E . B. Rosa , Burton McCollum , and O. S. Peters Description of experimental researches on the effects of electric currents on concrete . The investigation has consisted of three parts : ( a ) Laboratory investigations ...
Halaman 92
... concrete is subject to disin- tegration by alkali salts . Practical experience indicates that some con- cretes are less susceptible to such action than others and are quite permanent even if exposed in very concentrated alkali soils ...
... concrete is subject to disin- tegration by alkali salts . Practical experience indicates that some con- cretes are less susceptible to such action than others and are quite permanent even if exposed in very concentrated alkali soils ...
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Istilah dan frasa umum
15 cents absorption acid alloys alternating current ammonia analysis Annual reports antenna apparatus Baumé scale Bureau of Standards cadmium calorimeter carbon cell chemical circuits circular clays coaxial coils color commercial concrete condensers constant contains copper curves density described determined Director discussed E. B. Rosa effect electrical electrode electrolysis electromotive force emissivity error experimental formula frequency galvanometer given glass heat hysteresis instrument investigation iron June laboratory lamps linseed oil Louis Cohen magnetic materials mercury metal meters method molybdenite mutual inductance obtained oxide Paint paper gives photometric platinum Portland cement potentiometer Price properties pyrometer radiation reflection resistance resistance thermometer rubber samples scale self-inductance Sept shown silver sodium oxalate solutions specifications spectral spectrum steel tables temperature tests thermometers tion transmission tube tungsten units vanadium vapor various voltage voltameter W. W. Coblentz wave lengths weights and measures wire
Bagian yang populer
Halaman 98 - AA Klein) Constitution and microstructure of silica brick and changes involved through repeated burnings at high temperatures, US Bur.
Halaman 84 - Special Studies in Electrolysis Mitigation. IV. A Preliminary Report on Electrolysis Mitigation in Elyria, Ohio, with Recommendations for Mitigation...
Halaman 139 - Specifications and tolerances for weights and measures,, and weighing and measuring devices, adopted by the eleventh annual conference on the weights and measures of the United States, held at the Bureau of Standards, Washington, DC, May 23-26, 1916, and recommended by the Bureau of Standards for adoption by the several States.
Halaman 31 - At all stations the logarithmic decrement per complete oscillation in the wave trains emitted by the transmitter shall not exceed two-tenths, except when sending distress signals or signals and messages relating thereto. USE OF STANDARD DISTRESS WAVE Fifth.
Halaman 18 - ... Concentration Cells Henry S. Carhart 166. The Capacity and Phase Difference of Paraffined Paper Condensers as Functions of Temperature and Frequency Frederick W.
Halaman 14 - The 20° C temperature coefficient of a sample of copper is given by multiplying the number expressing the per cent conductivity by 0.00394.
Halaman 124 - That reasonable variations shall be permitted and tolerance shall be established by rules and regulations made by the Director of the Bureau of Standards and approved by the Secretary of Commerce.
Halaman 9 - Burrows 1 1 8. A Method for Constructing the Natural Scale of Pure Color . . PG Nutting 119. An Approximate Method for the Analysis of EMF. Waves . . PG Agnew 1 20. The Thermoelectric Properties of Tantalum and Tungsten . W . W . Coblentz 121.
Halaman 64 - Relation of the High-Temperature Treatment of High-Speed Steel to Secondary Hardening and Red Hardness...