Test Procedure of ASTM D – 06 Standard Test: The apparatus for the Marshall Stability test consists of the following: Specimen mould assembly comprising. ASTM DStandard Test Method for Marshall Stability and Flow of Bituminous Mixtures_建筑/土木_工程科技_专业资料。ASTM的沥青混合. Preparation of Marshall Specimens (from bituminous mixes). ASTM D PROCEDURE (continued) e. Specimens conditioned to specified temperature.
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Specimens within the thickness tolerance may be corrected based on specimen volume or thickness.
ASTM D Standard
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Soil – CBR loading presses: The machine has built-in data acquisition with four channels dedicated to two strain gauge load x6927 and two potentiometric linear transducers; one of each can be used during the test.
However, results with larger corrections should be used with caution. Pre-calibrated proving ring of 5 tones capacity is fixed on the upper end of the machine, ast contained in the test head is placed in between ast, base and the proving ring.
If a water bath is used, wipe excess water from the inside of the testing head segments. One test for binding is to lift or lower head by a single guide bushing. The tank shall have a perforated false bottom or be equipped with a shelf for supporting specimens 50 mm 2 in.
The Marshall Test can be conducted with two different types of equipment: Link to Active This link will always route to the current Active version of the standard.
The 50kN capacity and fully variable speed of 0. Such conditions can create stress concentrations in loading and low Marshall stability.
The dial gauge of the flow meter should be able to measure accurately the total vertical moment upward. One test result is considered to be the average of tests on three specimens.
An important feature is provided by the processing unit that controls the speed in a closed-loop modeavoiding speed calibrations and tension fluctuation s6927. In addition, Marshall stability and? Railway Gauges – Types of Railway Gauges. However, these results may not compare with results from laboratory-prepared specimens and shall not be used for speci?
During cooling they should be placed on a smooth,? The front panel is fitted with an emergency button for prompt stopping of the machine. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
ASTM D6927 – 15
The 20 kN lb ring shall have a minimum sensitivity of 50 N 10 c6927. The values given in d9627 are for information only. In addition, Marshall stability and flow can be used to monitor the plant process of producing asphalt mixture.
The large acceptable range of two test results between-laboratories indicates that this test should not be used for material acceptance programs that compare between-laboratory results. Circulating water bath with cooler unit for Marshall. B Volume-thickness relationship is based on a specimen diameter of 4 in. This test attempts to get the optimum binder content for the aggregate mix type and traffic intensity. It is provided with a gear system to lift the upward direction.
The above test properties may also be weighted differently to re? Other types of compaction may cause xstm to have different stress strain characteristics than specimens prepared by Marshall impact compaction. ASTM D standar If flow at the selected optimum binder content is above the upper limit, the mix is considered adtm plastic or unstable and if below the lower limit, it is considered too brittle.
For the purpose of mix design, Marshall stability and? The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided ast part of the standard.
Marshall stability and flow may also be determined using field cores from in situ pavement for information or evaluation. Historical Version s – view previous versions of standard.
Marshall compression tester A bench mounted compression frame with motor and worm gear housed within the base unit. However, depending on the composition and behavior of the mixture, a less defined type of failure has been observed, as illustrated in Fig.
Current edition approved June 1,