Report of InvestigationsU.S. Department of the Interior, Bureau of Mines, 1919 - Mineral industries |
From inside the book
Results 1-5 of 100
Page 2
... average 2,500 to 3,500 psi compressive strengths and when prestressed will average up to twice these values . For pavements , land concretes are used with compressive strengths of 3,000 to 4,000 psi . general , these concretes have ...
... average 2,500 to 3,500 psi compressive strengths and when prestressed will average up to twice these values . For pavements , land concretes are used with compressive strengths of 3,000 to 4,000 psi . general , these concretes have ...
Page 13
... average compres- sive strength value of the 50 3- by 6 - inch test cylinders was 5,890 psi com- pared with 5,870 psi from the average of the 50 6- by 12 - inch cylinders . - TABLE 5. Influence of cylinder size on compressive strength ...
... average compres- sive strength value of the 50 3- by 6 - inch test cylinders was 5,890 psi com- pared with 5,870 psi from the average of the 50 6- by 12 - inch cylinders . - TABLE 5. Influence of cylinder size on compressive strength ...
Page 17
... average Blends of-- 14 unmodified sulfur ... 14 5 DC PD modified sulfur . 6 2 DCPD modified sulfur .. .. 6 2 DCPD , 1/2 DP modified sulfur . 6 2 DC PD , 1 DP modified sulfur .. .. The modifiers were 2 and 5 pct dicyclopentadiene and ...
... average Blends of-- 14 unmodified sulfur ... 14 5 DC PD modified sulfur . 6 2 DCPD modified sulfur .. .. 6 2 DCPD , 1/2 DP modified sulfur . 6 2 DC PD , 1 DP modified sulfur .. .. The modifiers were 2 and 5 pct dicyclopentadiene and ...
Page 22
... average of two determin- ations . Beams from test number 2 made with multiple lifts of unmodified sulfur concrete showed an indication of layering at the pour junctions on the fractured specimens . This was similiar to the results ...
... average of two determin- ations . Beams from test number 2 made with multiple lifts of unmodified sulfur concrete showed an indication of layering at the pour junctions on the fractured specimens . This was similiar to the results ...
Page 23
... average compressive strengths of the slab was 3,880 psi , modulus of rupture was 1,050 psi , specific gravity was 2.318 , and the void content was 4.88 pct . The slab is shown in figure 8 , and after 11 - month service it has shown no ...
... average compressive strengths of the slab was 3,880 psi , modulus of rupture was 1,050 psi , specific gravity was 2.318 , and the void content was 4.88 pct . The slab is shown in figure 8 , and after 11 - month service it has shown no ...
Common terms and phrases
aluminum bolt BuMines RI Bureau of Mines burning velocity calculated cell chloride coal coalbed combustion composition compressive strength concentration curves degasification density depth of cut determined dicyclopentadiene drilling dump leach effect electrodes Electromotive force eluate energy Engineering Library enthalpy equation experimental explosions FeCl3 flame front flame speed flotation formation gas flow Gibbs free energy H₂SO heat hole ignition ilmenite inches increase inflatable stoppings INTERIOR investigation iron iron chloride kcal kiln kpsi loading Mary Lee MBOB measured metal methane microcline mixture modified sulfur obtained oxide particles pellets percent phase PNCL pressure radius Raney nickel ratio reaction Report resin rock sample shown in figure slimes solder solution specimens steels stope sulfur concretes surface synthetic leach liquor temperature tests thick tion traveltimes tube U.S. Bureau unburned UNIVERSITY OF MICHIGAN Vacutainers values venting WALKER COUNTY zeta potential
Popular passages
Page 3 - An acid plant was installed in 1929 to treat •Underlined numbers in parentheses refer to items in the list of references at the end of this report.
Page 3 - Needless to say, this contractor did not submit a bid. "(10) (Reference to specific trade names is made for identification only and does not imply endorsement by the Bureau of Mines...
Page 10 - API, is pumped to storage. 3Reference to specific makes or models of equipment is made to facilitate understanding and does not imply endorsement by the Bureau of Mines.
Page 11 - Haynes, WP, JJ Elliott, AJ Youngblood, and AJ Forney. Operation of a Sprayed Raney Nickel Tube-wall Reactor for Production of a High-Btu Gas.
Page 34 - Prediction of Laminar Flow and Heat Transfer in Helically Coiled Pipes,
Page 9 - Kissell, FN. CM McCulloch, and CH Elder. The Direct Method of Determining Methane Content of Coalbeds for Ventilation Design.