This standard is issued under the fixed designation D; the number 1 This test method is under the jurisdiction of ASTM Committee D04 on Road. D Standard Test Method for Marshall Stability and Flow of Asphalt Mixtures plastic flow~ Standard + Redline PDF Bundle ASTM License Agreement. laboratory mix design and evaluation of asphalt mixtures. In addition, Marshall stability and ow can be used to monitor the plant process of producing asphalt mixture. Marshall stability and ow also be used to relatively evaluate dierent mixes and the eects of conditioning such.
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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. ASTM D APPARATUS. 1. Breaking Head / Clause Thickness of specimen measured according to ASTM D? ____. gates (OBBA) and stone aggregates are tested as per ASTM guidelines . in ASTM. D  is used for determining the optimum binder.
A superscript epsilon e indicates an editorial change since the last revision or reapproval.
Scope 1. This test method is for use with dense graded bituminous mixtures prepared with asphalt cement modi? The values given in parentheses are for information only. 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.
Referenced Documents 2. In addition, Marshall stability and? Marshall stability and? The Marshall Test can be conducted with two different types of equipment: 1 Method A—using a loading frame with a load ring and a dial gauge for deformation or?
However, depending on the composition and behavior of the mixture, a less de? As an alternative method, Marshall stability can also be de?
2 4 astm d6927 marshall quotient stabilityflow 25 5 2
The magnitude of Marshall Stability varies with aggregate type and grading and bitumen type, grade and amount. Various agencies have criteria for Marshall stability.
In both types of failure, the Marshall? As shown in Fig. Current edition approved June 1, Published July Originally approved in Last previous edition approved in as D — There is no ideal value but there are acceptable limits. For the purpose of mix design, Marshall stability and?
The binder content range is generally selected on the basis of experience and historical testing data of the component materials, but may involve trial and error to include the desirable range of mix properties. Dense-graded mixtures will generally show a peak in stability within the range of binder contents tested. The above test properties may also be weighted differently to re?
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. This includes mixing efficiency and aging.
The source of the variation should be resolved and the problem corrected. Other types of compaction may cause specimens to have different stress strain characteristics than specimens prepared by Marshall impact compaction.
However, these results may not compare with results from laboratory-prepared specimens and shall not be used for speci?
One source of error in testing? Such conditions can create stress concentrations in loading and low Marshall stability.
Apparatus 4. The lower segment shall be mounted on a base having two perpendicular guide rods or posts minimum Specimen extractor for extracting the compacted specimen from the mold. A suitable bar is required to transfer load from the extension collar to the upper proving ring attachment while extracting the specimen.
Compaction hammer having a flat circular tamping face 4. Mold holder is provided consisting of spring tension device designed to hold compaction mould in place on compaction pedestal. Breaking head: this consists of upper and lower cylindrical segments or test heads having a inside radius curvature of 5 cm.
Loading Machine: It is provided with a gear system to lift the upward direction.
Pre-calibrated proving ring of 5 tones capacity is fixed on the upper end of the machine, specimen contained in the test head is placed in between the base and the proving ring. The load jack produces a uniform vertical moment of 5 cm per minute. Machine is capable of reversing its moment downward also.
This facilitates adequate space for placing test head system after one specimen has been tested. Flow meter consists of guide, sieve and gauge.
As shown in Fig. There is no ideal value but there are acceptable limits. If ow 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.
For the purpose of mix design, Marshall stability and ow test results should consist of the average of a minimum of three specimens at each increment of binder content where the binder content varies in one-half percent increments over a range of binder content. The binder content range is generally selected on the basis of experience and historical testing data of the component materials, but may involve trial and error to include the desirable range of mix properties.
Dense-graded mixtures will generally show a peak in stability within the range of binder contents tested.
ASTM D6927 + REDLINE
Stability, ow, density, air voids, and voids lled with asphalt binder, may be plotted against binder content to allow selection of an optimum binder content for the mixture. The above test properties may also be weighted dierently to reect a particular mix design philosophy. 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. This includes mixing eciency and aging.However, depending on the composition and behavior of the mixture, a less dened type of failure has been observed, as illustrated in Fig.
Test Procedure of ASTM D6927 - 06 Standard Test:
The design in Fig. Preparation of Test Specimen grams of aggregate blended in the desired proportions is measured and heated in the oven to the mixing temperature. The binder content range is generally selected on the basis of experience and historical testing data of the component materials, but may involve trial and error to include the desirable range of mix properties. This includes mixing efficiency and aging.
Marshall Stability and flow values along with density, air voids in the total mix, voids in mineral aggregates or voids filled with asphalt or both filled with asphalt are used for laboratory mix design and evaluation of asphalt mixtures. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.