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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ASTM DStandard Test Method for Marshall Stability and Flow of Bituminous Mixtures_图文_百度文库
However, results with larger corrections should be used with asfm. One test result is considered to be the average of three samples. 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 activating pin of the gauge slides inside the guide sleeve with a slight amount of frictional resistance. Circulating water bath with cooler unit for Marshall. Maintenance Spares Technical trainings Warranty Academy.
The coefficients of variation and acceptable range of two results are the average of the four sets of pro?
Link to Active This link will always route to the current Active version of the standard. In both types of failure, the Marshall? All the accessories have to be ordered separately.
Ashm on chart speed, Marshall?
ASTM D6927 – 15
Marshal test is extensively used in routine test programs for the paving jobs. No external transducer sstm required for displacement measurement. For the purpose of mix design, Marshall stability and? The flow value refers to the total vertical upward movement from the initial position at zero loads to value at maximum load. A superscript epsilon e indicates an editorial change since the last revision or reapproval.
NOTE 2—Temperature variation will affect test results.
The Marshall Test can be conducted with two different types of equipment: General lab – Water asrm Stay informed – subscribe to our newsletter.
These alternate devices should be capable of indicating or displaying? This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? This data involved test results from between and laboratories testing mm 4-in. During cooling they should be placed on a smooth,? The ring dynamometer should be attached to the aetm frame see ring holding bar, Fig. The magnitude of Marshall Stability varies with aggregate type and grading and bitumen type, grade and amount.
The 50kN d927 and fully variable speed of 0. This includes mixing efficiency and aging. The EN covering the Determination of the indirect tensile strength of bituminous mixtures, prescribe a water Dense-graded mixtures will generally show a peak in stability within the range of binder contents tested.
Marshall stability and flow may also be used to relatively evaluate different mixes and the effects of conditioning such as with water. If a water bath is used, wipe excess water from the inside of the testing head segments. There is no ideal value but there are acceptable limits. Last previous edition approved in d6972 D — Marshall compression tester A bench mounted compression frame with motor and worm asgm housed within the base unit. The ring dynamometer assembly may be replaced with a load cell connected to a loaddeformation recorder or computer provided capacity and sensitivity meet above requirements.
The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
NOTE 1—A higher capacity ring dynamometer may be required for high-stability mixes. Factors Affecting Selection of Highway Location. In addition, a mixture design may be required to meet minimum voids in the mineral aggregate based on nominal maximum aggregate size in the mixture.
If flow at the selected optimum binder content is above the upper limit, the mix is considered too plastic or unstable and if below the lower limit, it is considered too brittle. Correction factors correlation ratios are d6972 in Table 1. The values given in parentheses are for information only.
The above test properties may also be weighted differently to reflect atsm particular mix design philosophy. Place the upper segment of the testing head on the specimen, and place the complete assembly in position in the loading machine.
One ast of error in testing? Stability, flow, density, air voids, and voids filled with asphalt binder, may be plotted against binder content to allow selection of an optimum binder content for the mixture. Reliable results depend on many factors; following the suggestions of Specification D or some similar acceptable guideline provides a means of evaluating and controlling some of those factors.
Lubricate guide rods so that the upper test head segment slides freely over them. The bath shall be thermostatically controlled so as to maintain the speci? One source of error in testing field cores arises when the side of the core is not smooth or perpendicular to the core faces. The dial gauge of the flow meter should be able to measure accurately the total vertical moment upward.
Originally approved in Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The machine is fit with a precision strain gauge load cell and displacement transducer, both connected to the Digimax