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.
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Introduce sample through tube N taking care not to wet the sides of tube N, into the cross-arm D until the leading edge stands within 0. Preparation of Sample 7. Determine the efflux time to the nearest 0. The use of similar commercially available sulphuric acid cleaning solutions is acceptable. Remove This Item Compare. Or visit our webshop to get price and technical information for a viscosity bath and accessories to determine the kinematic viscosity of asphalts bitumens conform to ASTM D and ISO When thermometers are completely submerged, corrections for each individual thermometer based on calibration under conditions of complete submergence must be determined and applied.
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 Please contact our sales team sales tamson. Dry the tube by passing a slow stream of filtered dried air through the capillary for 2 min, or until the last trace of solvent is removed. This coefficient is a measure of the resistance to flow of a liquid.
See Annex A1 for the method of calculation. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Co 5 viscometer constant when filled and tested at the same temperature, T 5 temperature, F 5 temperature dependence factor see A3.
The morphological studies of polymer modified binder were discussed. Kinematic viscosity, cSt 5 Ct 1 where: It is commonly called the viscosity of the liquid.
If this efflux time is less than 60 s, select a viscometer of smaller capillary diameter and repeat the operation.
This density value is equivalent to a specific gravity of 1. Select also a standard viscometer of known C constant.
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 r2170 and about 30 mm below the level of tube D in capillary R; gravity flow is thus initiated. A hot f2170 stability test was carried out for polymer modified binder. D viscometer calibration factor. The bath is fitted with a double window of which the front pane is detachable for cleaning purposes. These factors are based on an average coefficient of expansion for asphalt cement of 0.
Results of this test method d210 be used to calculate viscosity when the density of the test material at the test temperature is known or can be determined. Moreover, the results explained that the compatibility between PMMA and asphalt binder is improved upon further aging especially with low molecular weight polymer PMMA.
The ice point reading shall be expressed to the nearest 0. Additional operating instructions for the reverseflow viscometers are outlined in A2.
The practice of completely asstm the thermometer is not recommended. The method is used to determine the consistency of bitumen as one element in establishing the uniformity of shipments or sources of supply. Add more liquid if necessary to bring the upper meniscus slightly above mark G. The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
Measurement of viscosity of fluids. This standard has been approved for use by agencies aetm the Department of Defense. Ast, strongly oxidizing acid cleaning solutions6 may be substituted so as to avoid the disposal problems of chromiumcontaining solutions.
Practical 4 Effect of concentration on viscosity Name: Reverse-flow viscometers are used for the measurement of kinematic viscosities of opaque and transparent liquids up to cSt.
For the LantzZeitfuchs viscometer, apply slight vacuum to tube M or pressure to tube N with tube K closed until the lower asttm is opposite the lower timing mark E; allow the sample to flow by gravity. R2170 the modified 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.
Last previous edition D — C2 5 the calibration constant in the testing laboratory, C 1 5 the calibration constant in the calibrating laboratory, 5 the acceleration of gravity at the testing laboratory, g2 d21770 5 the acceleration of gravity at the calibrating laborag1 tory. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Two such determinations are needed from which to calculate a kinematic viscosity result that is the average of two acceptable determined values.
ASTM D – ASTM equipment
Why should you use a Tamson Viscosity bath to measure the kinematic viscosity of asphalts bitumens? Since these thermometers are typically in a kinematic viscosity bath which has vision through the frontthe thermometer is read by lowering the thermometer such that the top of the mercury column is 5 to 15 mm below the surface of the bath liquid. If the expansion chamber is at elevated or lowered temperatures from ambient temperatures, a significant error can occur.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. This error can be as much as one or two thermometer divisions.
View as Grid List. Certificates for viscometers should state the value of g at the location of the calibrating laboratory.