Designation: D – 95 Designation: /84 (89) Standard Test Method for Kinematic Viscosity of Asphalts (Bitumens)1 This standard is issued under the. ASTM D Related Standards: ASTM C, D92, D, D, D, D, D, E1, E77; Related IP Standard: / ASTM D, EN , ASTM D, IP , EN , AASHTOT Rev 2. Content of Presentation. ✓ What is Bitumen. ✓ Viscosity of Bitumen.
Abd ElrhmanSanaa A. Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: Certificates for viscometers should state the value d21770 g at the location of the calibrating laboratory. Material and Type Index Single-operator precision: D viscometer calibration factor.
ASTM D2170/D2170M – 10
The constant ratio of the shearing stress to the rate of shear is the viscosity of the liquid. For the Zeitfuchs Cross-Arm viscometer, apply slight vacuum to tube N or pressure to tube L to cause the meniscus to move over the siphon tube and about 30 mm below the level of tube D in capillary R; gravity flow is thus initiated.
The time is measured for a fixed volume of liquid to flow under gravity through the capillary of a calibrated viscometer under a reproducible driving head and at a closely controlled and known temperature inside a viscosity bath.
Wipe excess sample off tube N and invert the viscometer to its normal position. If the reading is found to be higher or lower than the reading corresponding to a previous calibration, readings at all other temperatures will be correspondingly increased or decreased.
The efficiency of the stirring and the balance between heat losses and heat input must be such that the temperature of the bath medium does not vary by more than If the thermometer is completely submerged in the bath during use, the pressure of the gas in the expansion chamber will be higher or lower than during standardization, and may cause high or low readings on the thermometer.
The achieved improvement was found to be dependent on polymer molecular weight. This research studies the effect of adding poly methyl methacrylate PMMA with different molecular weights on asphalt properties. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Draw liquid through tube N, filling bulb D to fill mark G. On the Identification of Technology Shocks: Two such determinations are needed from which to calculate a kinematic viscosity result that is the average of two acceptable determined values.
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Firm supports for the viscometer shall be provided, or the viscometer may be an integral part of the bath. The TV has a cover with seven openings and lids.
A charge of the erythrocyte test by automated method. Discard any cloudy or unsound portions. Show 9 2d170 Scientific Research An Academic Publisher. Details regarding calibration of viscometers are given in Annex A3.
ASTM D / DM – 10 Standard Test Method for Kinematic Viscosity of Asphalts (Bitumens)
Select also a standard viscometer of known C constant. Unlike the asrm Ostwald and suspended-level viscometers, the sample of liquid flows into a timing bulb not previously wet by sample, thus allowing the timing of liquids whose thin films are opaque. Thus, the accurate determination of viscosity is essential to many product specifications. Preparation of Sample 7. Physical and Chemical Properties.
Kinematic Viscosity ASTM D2170
B Based on less than 30 degrees of freedom. In all cases, however, follow the general procedure described in 8. The method is used to determine the consistency of bitumen as one element in establishing the uniformity of shipments or sources of supply. It is recommended that the interval of checking be every six months; for a new thermometer, check monthly for the first six months. Reverse-flow viscometers are used for the measurement of kinematic viscosities of opaque and transparent liquids up to cSt.
If the sample is poured at a temperature above test temperature, wait 15 min for the sample in the viscometer to attain bath temperature and add more sample to overflow slightly into bulb K. The viscometer bath has a drain to remove the bath content. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. The morphological studies of polymer modified binder were discussed.
Factors controlling heat exchange between the human body and its. Documents Flashcards Grammar checker. Dry the viscometer by passing a slow stream of filtered, dry air through the viscometer for 2 min, or until the last trace of solvent is removed.
Historical Version s – view previous versions of standard. Add to Cart Add to Cart. After allowing the sample to attain bath temperature see A2. This coefficient is a measure of the resistance to flow of a liquid. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
Mount the viscometer in the constant-temperature bath, keeping tube L vertical.
A number in parentheses indicates the year of last reapproval. Failure to correct for gravity can result in errors of 0.