SAMPLING AND TESTING HIGHWAY MATERIALS. 



75 



MISCELLANEOUS MATTER. 



63. LIST OF APPAEATUS FOR CONDUCTING TESTS ON BITUMINOUS 

 MATERIALS FOR ROAD CONSTRUCTION. 16 



Analytical balance with necessary 



"weights. 

 Hough balance. 



Pycnometer — Hubbard-Carmick type. 

 Hydrometers and jar. 

 Penetrometer. 

 Constant temperature oven. 

 Open cup flash tester. 

 Ring and ball apparatus. 

 Ductility machine. 

 Erlenmeyer flasks. 



Porcelain gooch crucibles and asbestos. 

 Aluminum float with three brass collars. 

 Engler flasks (250 c. c. distillation flasks 



of special dimension) . 

 Condenser tubes. 

 25 c. c. graduates. 

 Sprengel tubes. 

 Copper still, with steel clamps, inside 



dimensions 6 by 3^- inches. 

 Ring burner to fit copper still. 



Engler viscosimeter with standard ther- 

 mometer. 



Extractor for bituminous mixes. 



Platinum crucible, cover and triangle. 



Vacuum pump. 



Spatula knives. 



Stop watch. 



Burners, Meker and Tirrill. 



Rubber tubing. 



Stirring rods. 



Tripods. 



Thermometers. 



Triangles. 



Wire gauze. 



Hot plate. 



Water still. 



Desiccator. 



3-ounce tin cans, deep pattern, Gill type, 

 American Can Co. 



2-ounce tin cans. 



64. LIST OF APPARATUS FOR PHYSICAL TESTING OF NONBITUMINOUS 



ROAD MATERIALS. 17 



1 Deval abrasion machine with four cyl- 

 inders. 



1 impact machine for toughness test 

 (optional). 



1 diamond-core drill, Avith suitable drill 

 press (optional). 



1 diamond saw (optional). 



1 grinding lap (optional). 



5 pounds No. 120 carborundum. 



1 forcing press for breaking samples for 

 Deval test (optional). 



1 scale, capacity 5 kilograms and sensi- 

 tive to 0.5 gram. 



1 scale, capacity 1,000 grams and sensi- 

 tive to 0.1 gram. 



1 large drying oven. 



1 10 - inch desiccator, with calcium 

 chloride. 



1 millimeter scale. 



1 100 c. c. graduate. 



1 100 c. c. beaker. 



1 16-inch sieve, reinforced, with square 

 openings ^ inch in size. 



1 50-pound anvil. 



1 10-pound sledge. 



1 3-pound double-face stone hammer. 



1 lj-pound single-face stone hammer. 



1 6-inch scoop. 



1 cement-testing machine. 



1 200,000-pound testing machine, Uni- 

 versal type (optional). 



6 3-gang cement molds. 



1 set of Gilmore needles') , . , 



1 Vicat needle } one ^onal. 



1 complete set of standard screens and 



sieves. 

 1 platform scale. 



1 mixing pan for concrete, 3 by 4 feet. 

 1 large trowel. 

 1 small trowel. 

 1 sieve agitator. 

 1 cement-mixing table with nonabsorbent 



top. 

 1 nonabsorbent closet for storage of 



briquettes. 

 1 apparatus for accelerated soundness 



test. 

 6 pieces plate glass, 4 by 12 inches. 

 6 pieces plate glass, 4 by 4 inches. 

 1 immersion tank for storage of briquettes. 

 1 pair seamless rubber gloves. 

 12 6 by 12 inch cylindrical molds with 



metal base plates. 

 1 truncated cone for slump test, 4 by 12 



by 8 inches. 

 1 specific gravity vessel (Bull. 555, 



U. S. Dept. of Agric, fig. 1). 

 1 Le Chatelier specific gravity flask. 

 100-pound bag standard Ottawa sand. 

 1 ^-cubic foot cylindrical measure. 

 1 cubic foot measure. 

 1 tempering tank for mixing water. 

 1 puddling bar f by 21 inches. 



!6 This list includes those items of equipment that would be used ordinarily. A number of additional 

 pieces of apparatus might be required for occasional tests. 



l? This list includes items of equipment that will be used continuously and also certain items of equip- 

 ment which will be used only occasionally, and these latter are indicated as "optional." 



