Mixtures – ASTM D/DM APPARATUS. 1. Ovens / Clause Maintains the temperature at ± °C ( ± °F) ____. 2. Balance. STANDARD. • IRC: SP 11 – (Appendix – 5), ASTM D OBJECTIVE. • To determine the binder content in the asphalt mix by cold solvent extraction. Centrifuge Extractors are used to determine bitumen content in paving mixtures. They comply with ASTM D (Method A) and AASHTO T
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Once this is accomplished the remaining aggregates are weighed and graded. If trichloroethylene or astmm Propyl Bromide is used as the extraction solvent, the preliminary drying on a steam bath may be omitted.
This standard has been approved for use by agencies of the Department of Defense. Sco Scope pe 1.
ASTM D Standard
These motorized extractors have accurate, dependable electronic solid state speed control; rotation speed adjusts up and down. Please fill this v2172, we will try to respond as soon as possible. Circulate a gentle steady stream of cool water through the condenser. Treat the test portion in the bowl with three mL additions of trichloroethylene, following the same procedure.
The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure aztm the capability, calibration, and maintenance of the equipment used. Last previous edition approved in as D — We need your help! It is difficult to remove all the asphalt when some aggregates are used and some chlorides may remain within the mineral matter affecting the measured asphalt content.
The material used in fabricating the condenser shall be essentially unreactive to water and to the solvent used and shall be provided with suitable water inlet and outlet.
In this case, it is not necessary to transfer the extract to the graduated cylinder. Th Thee bi bitu tume men n co cont nten entt is ex expr press essed ed as ma mass ss percentt of moistu percen moisture-fr re-free ee mixtur mixtures. Swirl until the diatomaceous silica is completely in suspension.
When boiling has ceased and the cylinder is cool enough to handle, turn off the condenser and remove from the cylinder. Transfer the extraction to a mL graduate. Active view current version of standard. Referenc Referenced ed Documents Documents 2. Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend.
A standard 25 L aluminum cooking utensil has been found to be suitable. When sufficiently cool, pour mL of denatured alcohol over the specimen. Mix the test portion with a trowel and continue extraction to completion. Link to Active This link will always route to the current Active d272 of the standard.
Best quantitative results are obtained when the test is made on mixtures and pavements shortly after their preparation. Shut down the extractor after 1. Asttm are a non-profit group that run this website to share documents. The lower frame shall have legs of sufficient length to support the frame, including the apex of the metal cone and paper cone liner above the solvent level.
Calculation of Bitumen Content Preparation of Test Portions Digest at room temperature for 1 astj.
When two frames are used, the upper frame shall ast legs of sufficient length to support the metal cone and paper cone liner at or above the top rim of the lower frame. Note 1—The results asttm by these test methods may be affected by the age of the material tested, with older samples tending to yield slightly lower bitumen content. Use sufficient mL solvent additions not less than three so that the extract is not darker than a light straw color.
Collect the extract and the washings in a suitable graduate. The extract may be transferred directly r2172 the extraction cylinder to the centrifuge feed container If a stainless steel kettle is used, lift out the basket and the condenser cover assembly for examination of the solvent.
ASTM-D – Free Download PDF
Apply heat from either a gas burner or an electric hot plate. Combining values from the two systems may result in nonconformance with the standard.
Evaporate to dryness on a steam bath or hot plate, except use a steam bath when the solvent is benzene. Calculate the mass of the test portion.
Aggregate obtained by these test methods may be used for sieve analysis using Test Method C and Test Method C It is difficult to remove all the asphalt when some aggregates are used and somee chl som chlori orides des may rem remain ain wit within hin the min minera erall mat matter ter af affec fectin ting g the measured asphalt content.
Best quantitative results are obtained when the test is made on mixtures and pavements shortly after their preparation.
The solvent level should be below the apex of the one in the lower frame. At this point, turn off the hot plate and allow the apparatus to cool with the water running in the condenser.
The values stated in axtm system may not be exact equivalents; therefore, each system shall be used independently of the other.