U.S. Department of Defense MIL-STD-620A — MIL-STD-620A Test Methods for Bituminous Paving Materials Manual PDF (EN)

Downloaded from https://www.everyspec.com the weight in air and the weisht in water, and record it as the volume of the specimen plus container in cubic centimeters before immersion in fuel. horiaont4 and the transferee axis ia hori- zontal. AM Record the changoe in length of tbe teat qecimen, in centimeters, an a data sheet similar to that shown hi figure 107-3. 4.2.6 After the weight in writer is ob- tained, dry the specimen with a clean, dry cloth and ixmnerae it in synthetic fuel ~long with the pcnetr8tIon specimen. &4 $loftodng pdnt. 4.2.7 Remove the sample from the fuel and dry under forced drnft at room tem- perature for 1 hour along with the pene- tration sample.

4.4.1 Determine the wftening point of the blend in accordance with SS-RA06, method No. 216.0. 4.4.2 Record the softening point in de- grees Fahrenheit on a d~ta sheet similar to that shown in figure 107-S. 4.2.8 At the completion of the drying period, weigh the srtmple in air and in water. 43 Vhceaity. 4.2.9 Determine the difference between the weight in air and the weight in water, and record it M the volume of the sample plus contiiner in cubic centimeters after immersion in fuel. 4.5.1 Fill a 400-ml, Griffin, low-form beaker to within about ~~ in, of the top with material prepared as specified in 9.1 through 3.S.

Place the beaker in an oil bath, and condition the material to the temperatures shown in the tabulation in 4.5.2. k \ 4.2,10 Record the test data on a data sheet simila:’ to that shown in figure 107-2, -. 4.5.2 Determine the viscosity of the ma- te~ja] by use of a Broo~e]d viscometer, Model LVF, at approximately the tempera- tures indicated below for the spindle and revolutions per minute specified. Take readings 60 seconds after the spindle is actuated. 4.3 Flow. 4.3,1 Pour a portion of the ample pre- pared as described in 3.1 through 8.3 into tin amalgamated mold 4 cm wide by 6 cm long by 0.32 cm deep, placed on a bright tin panel.

Fill the mold with an excess of material, allow it to cool at room tempera- ture for at least hour, and then trim the material flush with the face of the mold with a heated knife or spatula. Raloktiom Tcmpomtun G F aptil* No. pu 4 200 4 6 226 4 6 4.3.2 Remove the mold, and place the panel containing the specimen in an oven maintained at 100° & 2° F. for 60 minutes. The panel shall be mounted so that the longitudinal axis of the specimen is at an angle of 76 degres & 1 degree with the abo 2 6 4.5.S Plot the viscosity in centipoises (Brookfteld) at each actual test temperature Method 107