ASTM C566-97

Standard Test Method for Total Evaporable Moisture Content of Aggregate by Drying

SCOPE
1.1 This test method covers the determination of the percentage of evaporable moisture in a sample of aggregate by drying, both surface moisture and moisture in the pores of the aggregate. Some aggregate may contain water that is chemically combined with the minerals in the aggregate. Such water is not evaporable and is not included in the percentage determined by this test method.  
1.2 The values stated in SI units are to be regarded as the standard. The values stated in parentheses are provided for information only.  
1.3 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. For specific precautionary statements, see 5.3.1, 7.2.1, and 7.3.1.

General Information

• Status: Historical
• Publication Date: 31-Dec-1996
• ICS: 91.100.01 - Construction materials in general
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.20 - Aggregates

Relations

• Replaced By: ASTM C566-97(2004) - Standard Test Method for Total Evaporable Moisture Content of Aggregate by Drying
• Effective Date: 01-Feb-2004
• Referred By: ASTM D8249-19 - Standard Practice for Use of Rotary Kiln Produced Porous Ceramic as a Mineral Amendment in Topsoil Used for Landscaping and Related Purposes
• Effective Date: 01-Jan-1997
• Referred By: ASTM E889-82(2023) - Standard Test Method for Composition or Purity of a Solid Waste Materials Stream
• Effective Date: 01-Jan-1997
• Referred By: ASTM C192/C192M-19 - Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory
• Effective Date: 01-Jan-1997
• Referred By: ASTM D5883-18 - Standard Guide for Use of Rotary Kiln Produced Expanded Shale, Clay or Slate (ESCS) as a Mineral Amendment in Topsoil Used for Landscaping and Related Purposes
• Effective Date: 01-Jan-1997
• Referred By: ASTM E3355-23 - Standard Guide for Characterization of Coal Combustion Products (CCPs) in Storage Area(s) for Beneficial Use
• Effective Date: 01-Jan-1997
• Referred By: ASTM C70-20 - Standard Test Method for Surface Moisture in Fine Aggregate
• Effective Date: 01-Jan-1997
• Referred By: ASTM D4914/D4914M-16 - Standard Test Methods for Density of Soil and Rock in Place by the Sand Replacement Method in a Test Pit
• Effective Date: 01-Jan-1997
• Referred By: ASTM C128-22 - Standard Test Method for Relative Density (Specific Gravity) and Absorption of Fine Aggregate
• Effective Date: 01-Jan-1997
• Referred By: ASTM D5030/D5030M-21 - Standard Test Methods for Density of In-Place Soil and Rock Materials by the Water Replacement Method in a Test Pit
• Effective Date: 01-Jan-1997
• Referred By: ASTM C387/C387M-23 - Standard Specification for Packaged, Dry, Combined Materials for Concrete and High Strength Mortar
• Effective Date: 01-Jan-1997
• Referred By: ASTM C1375-00(2020) - Standard Guide for Substrates Used in Testing Building Seals and Sealants
• Effective Date: 01-Jan-1997
• Referred By: ASTM D8140-18(2023) - Standard Guide for the Use of Foundry Sand in Asphalt Mixtures
• Effective Date: 01-Jan-1997
• Referred By: ASTM C127-15 - Standard Test Method for Relative Density (Specific Gravity) and Absorption of Coarse Aggregate (Withdrawn 2024)
• Effective Date: 01-Jan-1997
• Referred By: ASTM C1810/C1810M-22 - Standard Guide for Comparing Performance of Concrete-Making Materials Using Mortar Mixtures
• Effective Date: 01-Jan-1997

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C 566 – 97
Standard Test Method for
Total Evaporable Moisture Content of Aggregate by Drying
This standard is issued under the fixed designation C 566; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope National Research Council Report SHRP-P-619
1.1 This test method covers the determination of the per-
3. Terminology
centage of evaporable moisture in a sample of aggregate by
3.1 Definitions:
drying, both surface moisture and moisture in the pores of the
3.1.1 For definitions of terms used in this test method, refer
aggregate. Some aggregate may contain water that is chemi-
to Terminology C 125.
cally combined with the minerals in the aggregate. Such water
is not evaporable and is not included in the percentage
4. Significance and Use
determined by this test method.
4.1 This test method is sufficiently accurate for usual
1.2 The values stated in SI units are to be regarded as the
purposes, such as adjusting batch quantities of ingredients for
standard. The values stated in parentheses are provided for
concrete. It will generally measure the moisture in the test
information only.
sample more reliably than the sample can be made to represent
1.3 This standard does not purport to address all of the
the aggregate supply. In cases where the aggregate itself is
safety concerns, if any, associated with its use. It is the
altered by heat, or where more refined measurement is re-
responsibility of the user of this standard to establish appro-
quired, the test should be conducted using a ventilated,
priate safety and health practices and determine the applica-
controlled temperature oven.
bility of regulatory limitations prior to use. For specific
4.2 Large particles of coarse aggregate, especially those
precautionary statements, see 5.3.1, 7.2.1, and 7.3.1.
larger than 50 mm (2 in.), will require greater time for the
2. Referenced Documents moisture to travel from the interior of the particle to the
surface. The user of this test method should determine by trial
2.1 ASTM Standards:
if rapid drying methods provide sufficient accuracy for the
C 29/C 29M Test Method for Unit Weight and Voids in
2 intended use when drying large size particles.
Aggregate
C 125 Terminology Relating to Concrete and Concrete
5. Apparatus
Aggregates
5.1 Balance—A balance or scale accurate, readable, and
C 127 Test Method for Specific Gravity and Absorption of
sensitive to within 0.1 % of the test load at any point within the
Coarse Aggregate
range of use. Within any interval equal to 10 % of the capacity
C 128 Test Method for Specific Gravity and Absorption of
of the balance or scale used to determine mass, the load
Fine Aggregate
indication shall be accurate within 0.1 % of the difference in
C 670 Practice for Preparing Precision Statements for Test
masses.
Methods for Construction Materials
3 5.2 Source of Heat—A ventilated oven capable of maintain-
D 75 Practice for Sampling Aggregates
ing the temperature surrounding the sample at 110 6 5°C (230
E 11 Specification for Wire Cloth and Sieves for Testing
2 6 9°F). Where close control of the temperature is not required
Purposes
(see 4.1), other suitable sources of heat may be used, such as an
2.2 Other Document:
electric or gas hot plate, electric heat lamps, or a ventilated
microwave oven.
This test method is under the jurisdiction of ASTM Committee C-9 on Concrete 5.3 Sample Container—A container not affected by the heat,
and Concrete Aggregatesand is the direct responsibility of Subcommittee C09.20on
and of sufficient volume to contain the sample without danger
Normal Weight Aggregates.
Current edition approved Jan. 10, 1997. Published March 1997. Originally issued
as C 566 – 65 T. Last previous edition C 566 – 96.
2 4
Annual Book of ASTM Standards, Vol 04.02. Available from the National Research Council, 2101 Constitution Ave., N.W.,
Annual Book of ASTM Standards, Vol 04.03. Washington, DC 20418.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C 566
of spilling, and of such shape that the depth of sample will not 7.4 The sample is thoroughly dry when further heating
exceed one fifth of the least lateral dimension. causes, or would cause, less than 0.1 % additional loss in mass.
5.3.1 Precaution—When a microwave oven is used, the 7.5 Determine the mass of the dried sample to the nearest
container shall be nonmetallic. 0.1 % after it has cooled sufficiently not to damage the balance.
NOTE 1—Except for testing large samples, an ordinary frying pan is
8. Calculation
suitable for use with a hot plate, or any shallow flat-bottomed metal pan
8.1 Calculate total evaporable moisture content as follows:
is suitable with heat lamps or oven. Note precaution in 5.3.1.
p 5 100 ~W 2 D!/D (1)
5.4 Stirrer—A metal spoon or spatula of convenient size.
6. Sampling
where:
p 5 total evaporable moisture content of sample, percent,
6.1 Sample in accordance with Practice D 75, except for the
W 5 mass of original sample, g, and
sample size.
D 5 mass of dried sample, g.
6.2 Secure a sample of the aggregate representative of the
8.2 Surface moisture content is equal to the difference
moisture content in the supply being tested and having a mass
between the total evaporable moisture content and the absorp-
not less than the amount listed in Table 1. Protect the sample
tion, with all values based on the mass of a dry sample.
against loss of moisture prior to determining the mass.
Absorption may be determined in accordance with Tes
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