ASTM D() Standard Test Method for Indirect Tension Test for Resilient Modulus of Bituminous Mixtures. We supply testing equipment to perform. to the EN , Annex C and the ASTM D standards. two American ones: ASTM D Standard for the Complex Modulus, and the ASTM D. () ASTM D, Standard Test Method for Indirect Tension Test for Resilient Modulus of Bituminous Mixtures.
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D the same specimen should be for conditions producing progressively lower moduli. Depending upon the loading frequency and temperatures, a minimum of 50 to load repetitions is typical; however, the minimum for a given situation must be determined so that the resilient deformations are stable Note 5. Copyright ASTM Standard Test Method for Indirect Tension Test for Resilient Modulus of Bituminous Mixtures1 This standard is issued under the fixed designation D ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.
Adjust and balance the electronic measuring system as necessary. Your consent to our cookies if you continue to use this website. Stay on Page Continue to Compass. Other commercially available or laboratory constructed testing machines such as those using pneumatic repeated loading can also be used. Subsequent testing on 5 where: By controlling the time of reaction, two different molecular weights were obtained: Link to Active This link will always route to the current Active version of the standard.
Note 1-Ambient laboratory temperature may be substituted as appropriate.
The morphological studies of polymer modified binder were discussed. Scientific Research An Academic Publisher.
In order to reduce permanent damage to the specimen, testing should begin at the lowest temperature, shortest load duration, and smallest load. 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.
Since the procedure is nondestructive, tests can be repeated on a specimen to evaluate conditioning as with temperature or moisture. NOTE 4—A dummy specimen with a thermocouple in the center can be used to determine when the desired test temperature is reached. Three laboratory fabricated specimens or three cores are recommended for a given test series with variables of temperature, load duration, and load frequency.
Bring the specimens to the specified temperature before each test. Remember me Forgot password?
We share information about your activities on the site with our partners and Google partners: The recommended time for the load duration aastm 0. The sensitivity and type of measurement device should be selected to provide the deformation readout required in 5.
Unless the asfm is monitored, and the actual temperature 5. NOTE 2—An electrohydraulic testing machine with a function generator capable of producing the desired wave form has been shown to asttm suitable for use in repeated-load indirect tension testing. The load is applied vertically in the vertical diametral plane of a cylindrical specimen of asphalt concrete Fig. The achieved improvement was found to be dependent on polymer molecular weight. The specimens should have a height of at least 2 in.
NOTE 5—As few as five repetitions have been found to be sufficient for loads such as 5 to 25 lbf. The aging properties of d4132 modified asphalts were examined using thin film oven test TFOT.
The system should include a temperature-controlled cabinet large enough to hold at least three specimens for a period of 24 h prior to testing. The test can be used to study effects of temperature, loading rate, rest periods, etc. ASTM D astmd4213para la destilacion a presiones inferiores de 1 atm, archivo actualizadoen la ultima version. This test method covers procedures for preparing and testing laboratory-fabricated or field-recovered cores of bituminous mixtures to determine resilient modulus values using the repeated-load indirect tension test.
The instantaneous resilient modulus is calculated using the recoverable deformation that occurs instantaneously asym the unloading portion of one cycle. This standard does not purport to address all of the safety problems associated with its use. Moreover, the results explained that the compatibility between PMMA and asphalt binder is improved upon further aging especially with low molecular weight polymer PMMA.
ASTM D, Test equipment Controls
NOTE 6—Loads as low as 10 lbf have been used. The load strip shall be 0. A hot storage stability test was carried out for polymer modified binder.
Summary of Test Method 3. Specimens will normally be either a nominal 4 or 6 in. The procedure described covers a range of temperatures, loads, loading frequencies, and load durations.
NOTE 1—Ambient laboratory temperature may be substituted as appropriate. Formerly under the jurisdiction of Committee D04 on Road and Paving Materials, this test method was withdrawn in December in accordance with section NOTE 7—Load duration is the more important variable and it is recommended that the duration be held to some minimum which can be recorded.
The 4-min testing time limit is waived if loading is conducted within a temperature-control cabinet meeting the requirements in 5. A value of 0. The recommended test series consists of testing at 41, 77 Note 1and F 5, 25 Note 1and 40C at one or more loading frequencies, for example, at 0. 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 research studies the effect of adding poly methyl methacrylate PMMA with different molecular weights on asphalt properties. For specimens with rough textures, a thin hard rubber membrane attached to the loading strip has been found effective in asttm stress concentration effects, but should be used only when vertical deformations are not measured.
Increasing traffic loading and volumes on roads have led to the use of polymer modified binders to improve the performance of bitumen in terms of strength, durability, and resistance to rutting.