ASTM D4123 PDF
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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This research studies the effect of adding astj methyl methacrylate PMMA with different molecular weights on asphalt properties.
The load is applied vertically in the vertical diametral plane of a cylindrical specimen of asphalt concrete Fig.
Remember me Forgot password? 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. Adjust and balance the electronic measuring system as necessary. Bring the specimens to the specified temperature before each test.
The recommended time for the load duration is 0. This recommended series will result in nine test values for one specimen which can be used to evaluate the overall resilient behavior of the mixture. Other commercially available or laboratory constructed testing machines such as those using pneumatic repeated loading can also be used. Recommended frequencies are 0. 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.
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. Since the procedure is nondestructive, tests can be repeated on a specimen to evaluate conditioning as with temperature or moisture. The procedure described covers a range of temperatures, loads, loading frequencies, and load durations.
In order to reduce permanent damage to the specimen, testing should begin at the qstm temperature, shortest load duration, and smallest load. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters.
A charge of the erythrocyte test by automated method. The total resilient modulus is calculated using the total recoverable deformation which includes both the instantaneous recoverable and the timedependent continuing recoverable deformation during d41233 unloading and rest-period portion of one cycle.
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. However, asfm latter machines may not have the load capability to handle larger specimens at the colder testing temperatures. 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.
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NOTE 6—Loads as low as 10 lbf have been used. The recommended test series consists of testing d41233 41, 77 Note 1and F 5, 25 Note 1and 40C at one or more loading frequencies, for example, at 0. This standard does not purport to address all of the safety problems associated with its use.
This test method is not intended for use in specifications. A superscript epsilon e indicates an atsm change since the last revision or reapproval.
The specimens should have a height of at least 2 in. The 4-min testing time limit is waived if loading is conducted within a temperature-control cabinet meeting the requirements in 5.
By controlling the time of reaction, two different molecular weights were obtained: The morphological studies of polymer modified binder were discussed. NOTE 2—An electrohydraulic testing machine with a function generator capable of producing the desired wave form has been shown to be suitable for use in repeated-load indirect tension testing.
A number in parentheses indicates the year of last reapproval. NOTE 5—As few as five repetitions have been found to be sufficient for loads such as 5 to 25 lbf. HaggamIsmail M. Note 1-Ambient laboratory temperature may be substituted as appropriate.
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. If total cumulative vertical deformation greater than 0. The achieved improvement was found to be dependent on polymer molecular weight.
The instantaneous resilient modulus is calculated using the recoverable deformation that occurs instantaneously during the unloading portion of one cycle. The gages should be wired to preclude the effects of eccentric loading so as to give the algebraic sum of the movement of each side of the specimen. Pu1t 5 ultimate applied load required to fail specimen, lbf or Nt 5 thickness of specimen, in. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
The system should be capable of measuring horizontal deformations in the range of 0.