ASTM D3665-02
(Practice)Standard Practice for Random Sampling of Construction Materials
Standard Practice for Random Sampling of Construction Materials
SCOPE
1.1 This practice covers the determination of random locations (or timing) at which samples of construction materials can be taken. For the exact physical procedures for securing the sample, such as a description of the sampling tool, the number of increments needed for a sample, or the size of the sample, reference should be made to the appropriate standard method. The selection procedures in Section utilize the table of four-digit numbers given in Table 1.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.
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Designation:D3665–02
Standard Practice for
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Random Sampling of Construction Materials
This standard is issued under the fixed designation D 3665; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope intentional or minimize any unintentional bias on the part of
the person taking the sample.
1.1 This practice covers the determination of random loca-
tions (or timing) at which samples of construction materials
NOTE 1—The effectiveness of this practice in achieving random
canbetaken.Fortheexactphysicalproceduresforsecuringthe
samples is limited only by the conscientiousness of the user in following
the stipulated procedures.
sample, such as a description of the sampling tool, the number
of increments needed for a sample, or the size of the sample,
3.2 A less detailed procedure is included in 5.8 for normal
reference should be made to the appropriate standard method.
usage and is considered the most practical means except where
The selection procedures in Section 4 utilize the table of
the sampling is deemed extremely critical or where dispute is
four-digit numbers given in Table 1.
anticipated.
1.2 This standard does not purport to address all of the
3.3 The selection procedures and examples in this standard
safety concerns, if any, associated with its use. It is the
provide a practical approach for ensuring that construction
responsibility of the user of this standard to establish appro-
material samples are obtained in a random manner. Additional
priate safety and health practices and determine the applica-
details concerning the number of sample increments, the
bility of regulatory limitations prior to use.
number of samples, the quantities of material in each, and the
procedures for extracting sample increments or samples from
2. Referenced Documents
theconstructionlotorprocessarecontainedinPracticesC 172,
2.1 ASTM Standards:
C 183, D 75, D 140, D 979, D 5361, and Test Method D 345.
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C 172 Practice for Sampling Freshly Mixed Concrete
3.4 This standard contains examples citing road and paving
C 183 Practice for Sampling and the Amount of Testing of
materials. The concepts outlined therein are applicable to the
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Hydraulic Cement
random sampling of any construction material and can easily
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D 75 Practice for Sampling Aggregates
be adapted thereto.
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D 140 Practice for Sampling Bituminous Materials
3.5 Additional sampling guidance is provided in Practice
D 345 Test Method for Sampling and Testing Calcium
E 105 concerning probability sampling, Practice E 122 con-
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Chloride for Roads and Structural Applications
cerning choosing sample sizes to estimate the average quality
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D 979 Practice for Sampling Bituminous Paving Mixtures
of a lot or process (see Note 2), and in Practice E 141 for
D 5361 Practice for Sampling Compacted Bituminous Mix-
acceptance of evidence based on results of probability sam-
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tures for Laboratory Testing
pling.
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E 105 Practice for Probability Sampling of Materials
NOTE 2—The guidance contained in Practice E 122 is not available in
E 122 Practice for Choice of Sample Size to Estimate a
other documents referenced in this section.
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Measure of Quality for a Lot or Process
3.6 The best and most practical method for ensuring that
E 141 Practice for Acceptance of Evidence Based on the
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samples of construction materials include the full range of a
Results of Probability Sampling
construction process is by incorporating a stratified-random
3. Significance and Use
sampling procedure into the sampling process. To implement a
stratified-random sampling procedure, divide the lot to be
3.1 This practice is useful for determining the location or
sampledintothedesirednumberofequalsublotsandrandomly
time, or both, to take a sample in order to eliminate any
sample each sublot in accordance with this standard.
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NOTE 3—If the sublots are of unequal size, it will likely be necessary to
This practice is under the jurisdiction of ASTM Committee D04 on Road and
Paving Materials and is the direct responsibility of Subcommittee D04.30 on weight the samples in order to maintain a fair and defensible sampling
Methods of Sampling.
process.
Current edition approved Dec. 10, 2002. Published February 2003. Originally
approved in 1978. Last previous edition approved in 1999 as D 3665-99.
2
Annual Book of ASTM Standards, Vol 04.02.
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Annual Book of ASTM Standards, Vol 04.01.
4
Annual Book of ASTM Standards, Vol 04.03.
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Annual Book of ASTM Standards, Vol 14.02.
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