ASTM C511-98

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
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Designation: C 511 – 98
Standard Specification for
Moist Cabinets, Moist Rooms, and Water Storage Tanks
1
Used in the Testing of Hydraulic Cements and Concretes
This standard is issued under the fixed designation C 511; 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 shall have a temperature of 23.0 6 2.0°C and a relative
humidity of not less than 95 %. The moisture in the atmosphere
1.1 This specification covers requirements for moist cabi-
shall be saturated to the degree needed to ensure that the
nets, moist rooms, and water storage tanks used for storage of
exposed surfaces of all specimens in storage will both look
paste, mortar, and concrete test specimens.
moist and feel moist at all times. All storage units shall be
1.2 Values in SI units shall be obtained by measurement in
equipped with recording thermometers. The recording ther-
SI units or by appropriate conversion, using the Rules for
mometer shall be calibrated at least every six months or
Conversion and rounding given in Standard IEEE/ASTM SI
whenever there is a question of accuracy. Perform the verifi-
10, of measurements made in other units.
cation of the recording thermometer by comparing the tem-
1.3 This standard does not purport to address all of the
perature reading of the recording thermometer with the tem-
safety concerns, if any, associated with its use. It is the
perature reading of a reference thermometer during the normal
responsibility of the user of this standard to establish appro-
operation of the moist cabinet or room. The thermometer used
priate safety and health practices and determine the applica-
as the reference thermometer must be accurate and readable to
bility of regulatory limitations prior to use.
0.5°C. A copy of the certificate or report which verifies the
2. Referenced Documents
accuracy shall be available in the laboratory (Note 1). Position
the reference thermometer in a readable position in air as near
2.1 ASTM Standards:
as is practical to the recording temperature probe. Keep the
C 911 Specification for Quicklime, Hydrated Lime, and
2
door to the moist cabinet or room closed for at least 5 min prior
Limestone for Chemical Uses
to taking readings. Record the temperatures of both the
E 77 Test Methods for the Inspection and Verification of
3
recording thermometer and the reference thermometer. When
Thermometers
taking these readings, the reference thermometer shall remain
IEEE/ASTM SI 10 Standard for Use of the International
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in the moist cabinet or room and be read immediately upon
System of Units (SI): The Modern Metric System
opening the door. If the difference between the two tempera-
3. Terminology
tures is greater than 1°C, the recording thermometer shall be
adjusted to within 0.5°C of the reference thermometer. The use
3.1 Definitions:
of humidity recording devices is optional. Shelves on which
3.1.1 moist cabinet, n—a compartmented storage facility of
fresh specimens are placed shall be level.
moderate dimensions with controlled temperature and relative
humidity.
NOTE 1—The ice-point method describe in Test Method E 77 may be
3.1.2 moist room, n—a “walk-in” storage facility with
used to ensure that no damage to the reference thermometer has occurred
controlled temperature and relative humidity, commonly called during shipping.
a fog room when the prescribed relative humidity is achieved
4.1.1 The air in a moist storage unit must be nearly saturated
by the atomization of water.
with moisture in order to provide specified storage conditions.
In many cases, saturation is below optimum during periods
4. Requirements
when specimens are being placed in or removed from storage.
4.1 General—The atmosphere in a moist cabinet or room
Measurements of relative humidity should not be made at such
obviously inopportune times.
4.1.2 The recordings from the recording thermometers shall
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This specification is under the jurisdiction of ASTM Committee C-1 on Cement
be audited in order to ascertain the adequacy of the mecha-
and is the direct responsibility of Subcommittee C01.95 on Coordination of
nisms used to control the moist room air temperature.
Standards.
Current edition approved Nov. 10, 19987. Published March 1999. Originally
4.1.3 The air temperature inside the storage facility (moist
published as C 511 – 68. Last previous edition C 511 – 97.
cabinet or moist room) shall be controlled with provisions
2
Annual Book of ASTM Standards, Vol 04.01.
3 made for heating or cooling, or both, as may be necessary. This
Annual Book of ASTM Standards, Vol 14.03.
4
Annual Book of ASTM Standards, Vol 14.02. sha
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