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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The tank shall have a perforated false bottom or be equipped with a shelf for supporting specimens 50 mm 2 in.
The values given in parentheses are for information only. Circulating water bath with cooler unit for Marshall. These devices must be designed to measure and record the same relative movement between the top of the guide post and the upper breaking head. Subscribe to our Newsletter.
ASTM D Standard
Dense-graded wstm will generally show a peak in stability within the range of binder contents tested. Various agencies have criteria for Marshall stability. Other types of compaction may cause specimens to have different stress strain characteristics than specimens prepared by Marshall impact compaction.
This facilitates adequate space for placing test head system after one specimen has been tested. Least count of 0.
ASTM DStandard Test Method for Marshall Stability and Flow of Bituminous Mixtures_图文_百度文库
Asm in this Category. If used, place the? In addition, the specimens should have the same preparation, that is, temperatures, cooling, and compaction.
Various agencies have criteria for Marshall stability. The correlation ratio is used in the following manner. The source of the variation should be resolved and the problem corrected.
Qstm flow is measured as the deformation in units of 0. The Marshall 6 Stability is de? The dial gauge of the flow meter should be able to measure accurately the total vertical moment upward. If a water bath is used, wipe excess water from the inside of the testing head segments. Maintenance Spares Technical trainings Warranty Academy. No external transducer is required for displacement measurement. This includes mixing efficiency and aging.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. The above test properties may also be weighted differently to re? This test method is for use with dense asm bituminous mixtures prepared with asphalt cement modi?
However, depending on the composition and behavior of the mixture, a less de? One source of error in testing field cores arises when the atm of the core is not smooth or perpendicular to the core faces. Stability, flow, d6972, 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.
Guide sleeves in the upper segment shall 3 direct the two segments together without appreciable binding or loose motion on the guide rods.
ASTM D6927 – 15
Stay informed – subscribe to our newsletter. The ring dynamometer d66927 may be replaced with a load cell connected to a loaddeformation recorder or computer provided capacity and sensitivity meet above requirements. Current edition approved June 1, However, depending on the composition and behavior of the mixture, a less defined type of failure has been observed, as illustrated in Fig.
The front asm is fitted with an emergency dd6927 for prompt stopping of the machine. As shown in Fig. The main advantage of this machine is its high flexibility as a general purpose testing system, ensured by its generous dimensions which allow the placement of an 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 large acceptable range of two test results ashm indicates that this test should not be used for material acceptance programs that compare between-laboratory results.
Historical Version s – view previous versions of standard.
One test result is considered to be the average of three samples. These points of frictional resistance shall be checked before tests.
Testing shall ast, completed within 24 h after compaction. This includes mixing efficiency and aging. Flow meter consists of guide, sieve and gauge.
The ring dynamometer should be attached to the testing frame see ring c6927 bar, Fig. The load jack, DC motor and controls are housed in an ergonomic cabinet. The Marshall Test can be conducted with two different types of equipment: Originally approved in The magnitude of Marshall Stability varies with aggregate type and grading and bitumen type, grade and amount.