ASTM C Standard Test Methods for Uncompacted Void Content of Fine Aggregate (as Influenced by Particle Shape, Surface Texture. Matest proposes a wide range of testing equipment for ASTM C standard. For more info contact us. Purchase your copy of ASTM C – 17 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available.
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Uncompacted voids in aggregates (ASTM C )
Therefore, use either one method or the other as a comparative measure of shape and texture, and identify which test method has been used to obtain the reported data. As the voice of the U. Aggregate testing Back to Results Print. We have no amendments or corrections for this standard. You may delete a document from your Alert Profile at any time.
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For a graded sample Test Method A or Test Method C the percent void content is determined directly, and the average value from two runs is reported. Two use graded fine aggregate standard grading or as-received gradingand the other uses several individual size fractions for void content ast. This void content depends on grading as well as particle shape and texture. When void content is measured on x1252 as-received fine-aggregate grading, it can be an indicator of the effect of the fine aggregate on the workability of a mixture in which it may be used.
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Test Method C does not provide an indication of shape and texture directly if the grading from sample to sample changes. Standards Subsctiption may be the perfect solution. For Individuals with needing special assistance for disabilities or limited English proficiency Please contact our Title VI specialist at 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.
Your Alert Profile lists the documents that will be monitored. Two use graded fine aggregate standard grading or as-received gradingand the other uses several individual size fractions for void content determinations The fine aggregate is struck off and its mass is determined aastm weighing. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.
Aggregate testing Lab Services: An increase in ast content by these procedures indicates greater angularity, less sphericity, rougher surface texture, or combinations thereof.
For the individual size fractions Test Method Bthe mean percent void content is calculated using the results from tests of each of the three individual size fractions. In general, high void content suggests that the material could be improved by providing additional fines in the fine aggregate or more cementitious material may f1252 needed to fill voids between particles. Uncompacted void content is calculated as the difference between the volume of the cylindrical measure and the absolute volume of the fine aggregate collected in the measure.
See the Section 9 for the grading. Already Subscribed to this document. A decrease in void content results is associated with more rounded, spherical, or smooth-surfaced fine aggregate, or a combination thereof. When void content is measured on an as-received fine-aggregate grading, it can be an indicator of the effect of the fine aggregate on the workability of a mixture in which it may be used.
The effectiveness of these test methods of determining void content and its relationship to particle shape and texture depends on the relative density specific gravity of the various size fractions being equal, or nearly so.
The void content is actually a function of the volume of each size fraction. Need more than one copy? For this test method, each size is tested separately.
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Two runs are made on each sample and the results are averaged. However, Test Method B provides additional information concerning the shape and texture characteristics of individual sizes. Uncompacted void content is calculated using the bulk dry specific gravity of the fine aggregate. It is the responsibility of the user of astj standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
A sample consisting of single-size particles will have a higher void content than a graded sample.
This standard is also available to be included in Standards Subscriptions. Add to Alert PDF. We have no document history for this standard. Subscription pricing is determined by: If the type of rock or minerals, or its porosity, in asym of the size fractions varies markedly it may be necessary to determine the specific gravity of the size fractions used in the test.