ASTM C Standard Practice for Reducing Samples of Aggregate to Testing Size. Qty. Model, Description. 1, H, Sample splitter, 14 chutes, 1/2″ chute width. 1, H, Sample splitter, 14 chutes, 3/4″ chute width. 1, H, Sample. smaller test sample size required or convenient for each test. ASTM C provides procedures for reducing samples to the size required for testing. This process.
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The individual test methods provide for minimum amount of material to be tested.
Sieve size is identified by its standard designation in Specification E Other factors being equal, larger samples will tend to be more representative of the total supply. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Substantial differences between the selected test samples sometimes cannot be avoided, for example, in the case of an aggregate having relatively few large size particles in the sample.
Similarly, if the test sample is being examined for certain contaminants occurring in only small percentages, caution should be used in interpreting results from the reduced size test sample. This practice provides procedures for reducing the large sample obtained in the field, or produced in the laboratory, to a c72 size for conducting a number of descriptive and quality tests. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
In these cases, the entire original sample should be tested. Combining values ast, the two systems may result in non-conformance with the standard. The laws of chance dictate that these few particles may be unequally distributed among the reduced size test samples.
Chance inclusion or exclusion of only one or two particles asym the selected test sample may importantly influence interpretation of the characteristics of the original sample. Link to Active This link will always route to the current Active version of the standard.
ASTM C / CM – 18 Standard Practice for Reducing Samples of Aggregate to Testing Size
The alternative designation given in parentheses is for information only and does not represent a different standard sieve asfm. Historical Version s – view previous versions of standard.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Failure to asgm follow the procedures in this practice could result in providing a non-representative sample to be used in subsequent testing. These techniques are intended to minimize variations in measured characteristics between the test samples selected and the large sample.