AASHTO T44-14 pdf free download

AASHTO T44-14 pdf free download.Solubility of Bituminous Materials.
1. SCOPE
1.1. This method covers the determination of the degree of solubility in trichioroethylene or
I , I , 1 trichioroethane of asphalt materials having little or no mineral matter. The portion that is soluble in trichloroethylene or 1,1 1 trichioroethane represents the active cementing constituents.
1 .2. The values stated in SI units are to he regarded as the standard.
2. REFERENCED DOCUMENTS
2.1. AASHTO Standards:
• M 23 1, Weighing Devices Used in the Testing of Materials
• R 16, Regulatory Information for Chemicals Used in AASHTO Tests
2.2. ASTM Standard:
• E 177, Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
3. SUMMARY OF METHOD
3.1. The sample is dissolved in trichioroethylene or 1,1,1 trichloroethane and filtered through a filter mat. The insoluble material is washed, dried, and weighed.
5. SOLVENT
5.1. Technical grade, Type I, tricholorethylene or technical grade 1,1,1 tricholorethane.
6. SAFETY PRECAUTIONS
6.1. Trichloroethylene and 1,1,1 trichloroethane are toxic materials and strict adherence to instructions in Material Safety Data Sheets are to be followed. Caution: Trichloroethylene and 1,1,1 trichloroethane in the presence of heat and moisture may form acids that are extremely corrosive.
9. PROCEDURE
9.1. Note safety precautions in Section 6. Transfer approximately 2 g of the sample into a tared
1 25-mL Erlenmeyer flask or other suitable container. Allow the container and its contents to cool to ambient temperatures and determine the mass to the nearest I mg. Add 100 rnL of the trichioroethylene or 1,1,1 trichloroethane to the container, stopper flask and agitate as necessary until the sample is dissolved and no undissolved material adheres to the container.
Normally the temperature at which this test is run is not critical, and it may be performed at the laboratory air temperature. For referee tests, however, the flask and sample in solution shall be placed in a water bath maintained at 37.8 ± 0.25°C (100 + 0.5°F) for I h before filtering.
9.2. Place the previously prepared and tared Gooch crucible in the filtering tube.
Wet the filter pad with a small portion of clean solvent and decant the solution through the filter pad of the crucible with light suction.
When the insoluble matter is appreciable, retain as much of it as possible in the container until the solution has drained through the filter pad. If the filter paper becomes clogged with insoluble material and the solution cannot drain through, the use of additional crucibles is permitted, provided they are conditioned as described in Section 7.1. Wash the container with a small amount of solvent and, using a stream of solvent from a wash bottle, transfer all insoluble matter to the crucible. Use a “policeman” if necessary to remove any insoluble matter adhering to the container, rinse the policeman and the container, thoroughly wash the insoluble matter in the crucible with solvent until the filtrate is substantially colorless, then apply strong suction to remove the remaining solvent. Remove the crucible from the tube and wash the bottom free of any dissolved matter. Dry the crucible and contents at 110 ± 5°C (230 ± 9°F) for at least 20 mm. Cool the crucible and contents in a desiccator for at least 20 mm and determine the mass. Repeat this procedure until constant mass (±0.3 mg) is obtained.
Fiberglass filter pads should be used only one time.AASHTO T44-14 pdf download.