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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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Historical Version s – view previous versions of standard. 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.

ASTM C – 98 Standard Practice for Reducing Samples of Aggregate to Testing Size

The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Chance inclusion or exclusion of only astj or two particles in the selected test sample may importantly influence interpretation of the characteristics of the original sample. The laws of chance dictate that these few particles may be unequally distributed among the reduced size test samples.


In these cases, the entire original sample should be tested. Combining values from the two systems may result in non-conformance with the standard. Failure to carefully follow the procedures in this practice could result in providing a non-representative sample to be used in subsequent testing.

Sieve size is identified by its standard designation in Specification E 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. These techniques are intended to minimize variations in measured characteristics between the atm samples selected and the large sample.

The asmt test methods provide for minimum amount of material to be tested. 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

Other factors being equal, larger samples will tend to be more representative of the total supply. 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 convenient size for conducting a number of descriptive and quality tests.

The alternative designation given in parentheses is for information only and does not represent a different standard sieve size.

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