ASTM C511-21
(Specification)Standard Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes
Standard Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes
ABSTRACT
This specification includes the requirements for mixing rooms where paste and mortar specimens are prepared and for moist cabinets, moist rooms, and water storage tanks where paste, mortar, and concrete specimens are stored; intended for use in the testing of hydraulic cements and concretes. The system shall be equipped with a temperature recorder and a reference temperature measuring device that are to be placed practically near to each other. The air and mixing water temperatures and the relative humidity in the cement mixing room shall be maintained at specific values. Moist cabinets and moist rooms shall be constructed of durable materials with tight-fitting doors or windows for all openings. Air in moist cabinet or moist room shall be saturated with moisture in order to provide specified storage conditions and air temperature shall be controlled with provisions made for heating, cooling, or both. The specified relative humidity in these systems shall be maintained by the use of one or more fog sprays, water sprays, or curtains of water on the inner walls. Water storage tanks shall be constructed of non-corroding materials with provisions for automatic control of water temperature. The water in a storage tank shall be saturated with calcium hydroxide to prevent leaching.
SCOPE
1.1 This specification includes requirements for mixing rooms where paste and mortar specimens are prepared; and for moist cabinets, moist rooms, and water storage tanks where paste, mortar, and concrete specimens are stored.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. Values in SI units shall be obtained by measurement in SI units or by appropriate conversion, using the Rules for Conversion and rounding given in Standard IEEE/ASTM SI 10, of measurements made in other units.
1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this standard.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C511 −21
Standard Specification for
Mixing Rooms, Moist Cabinets, Moist Rooms, and Water
Storage Tanks Used in the Testing of Hydraulic Cements
1
and Concretes
This standard is issued under the fixed designation C511; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* E77 Test Method for Inspection and Verification of Ther-
mometers
1.1 This specification includes requirements for mixing
C125 Terminology Relating to Concrete and Concrete Ag-
rooms where paste and mortar specimens are prepared; and for
gregates
moist cabinets, moist rooms, and water storage tanks where
C219 Terminology Relating to Hydraulic and Other Inor-
paste, mortar, and concrete specimens are stored.
ganic Cements
1.2 The values stated in SI units are to be regarded as
IEEE/ASTM SI 10 Standard for Use of the International
standard. No other units of measurement are included in this
System of Units (SI): The Modern Metric System
standard. Values in SI units shall be obtained by measurement
in SI units or by appropriate conversion, using the Rules for
3. Terminology
Conversion and rounding given in Standard IEEE/ASTM SI
3.1 Definitions:
10, of measurements made in other units.
3.1.1 RefertoTerminologyC125andTerminologyC219for
1.3 The text of this standard references notes and footnotes
definitions of terms used in this test method.
which provide explanatory material. These notes and footnotes
3.2 Definitions of Terms Specific to This Standard:
(excluding those in tables and figures) shall not be considered
3.2.1 mixing room, n—a room with controlled temperature
as requirements of this standard.
and relative humidity where cement paste and mortar speci-
mens are prepared.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.2.2 moist cabinet, n—a compartmented storage facility of
responsibility of the user of this standard to establish appro-
moderate dimensions with controlled temperature and relative
priate safety, health, and environmental practices and deter-
humidity.
mine the applicability of regulatory limitations prior to use.
3.2.3 moist room, n—a “walk-in” storage facility with
1.5 This international standard was developed in accor-
controlled temperature and relative humidity, commonly called
dance with internationally recognized principles on standard-
a fog room when the prescribed relative humidity is achieved
ization established in the Decision on Principles for the
by the atomization of water.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4. Requirements for Cement Mixing Rooms
Barriers to Trade (TBT) Committee.
4.1 The temperature of the air in the vicinity of the mixing
slab, molds, and base plates shall be maintained at 23.0 6
2. Referenced Documents
2 4.0 °C and at a relative humidity of not less than 50 %.
2.1 ASTM Standards:
4.2 The temperature of the mixing water used to prepare
C51 Terminology Relating to Lime and Limestone (as Used
by the Industry) cement paste and mortar specimens shall be 23.0 6 2.0 °C.
5. Temperature Measuring Devices
1
This specification is under the jurisdiction of ASTM Committee C01 on
Cement and is the direct responsibility of Subcommittee C01.95 on Coordination of
5.1 Reference Temperature Measuring Device—used to
Standards.
verify the temperature recorder, must be accurate and readable
Current edition approved Dec. 1, 2021. Published December 2021. Originally
to 0.5 ºC. A copy of the certificate or report which verifies the
approved in 1968. Last previous edition approved in 2019 as C511 – 19. DOI:
10.1520/C0511-21.
accuracy shall be available in the laboratory.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
NOTE 1—The ice-point method described in Test Method E77 may be
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on used to ensure that no damage to the reference thermometer has occurred
the ASTM website. during shipping.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C511 − 21
5.2 Temperature Recorder—shall record temperatures every 6.1.1.2 Thermostatically c
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C511 − 19 C511 − 21
Standard Specification for
Mixing Rooms, Moist Cabinets, Moist Rooms, and Water
Storage Tanks Used in the Testing of Hydraulic Cements
1
and Concretes
This standard is issued under the fixed designation C511; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This specification includes requirements for mixing rooms where paste and mortar specimens are prepared; and for moist
cabinets, moist rooms, and water storage tanks where paste, mortar, and concrete specimens are stored.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. Values
in SI units shall be obtained by measurement in SI units or by appropriate conversion, using the Rules for Conversion and rounding
given in Standard IEEE/ASTM SI 10, of measurements made in other units.
1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of this standard.
1.4 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
C51 Terminology Relating to Lime and Limestone (as Used by the Industry)
E77 Test Method for Inspection and Verification of Thermometers
C125 Terminology Relating to Concrete and Concrete Aggregates
C219 Terminology Relating to Hydraulic and Other Inorganic Cements
IEEE/ASTM SI 10 Standard for Use of the International System of Units (SI): The Modern Metric System
3. Terminology
3.1 Definitions:
3.1.1 Refer to Terminology C125 and Terminology C219 for definitions of terms used in this test method.
1
This specification is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.95 on Coordination of Standards.
Current edition approved June 15, 2019Dec. 1, 2021. Published June 2019December 2021. Originally approved in 1968. Last previous edition approved in 20132019 as
C511 – 13.C511 – 19. DOI: 10.1520/C0511-19.10.1520/C0511-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C511 − 21
3.2 Definitions of Terms Specific to This Standard:
3.2.1 mixing room, n—a room with controlled temperature and relative humidity where cement paste and mortar specimens are
prepared.
3.2.2 moist cabinet, n—a compartmented storage facility of moderate dimensions with controlled temperature and relative
humidity.
3.2.3 moist room, n—a “walk-in” storage facility with controlled temperature and relative humidity, commonly called a fog room
when the prescribed relative humidity is achieved by the atomization of water.
4. Requirements for Cement Mixing Rooms
4.1 The temperature of the air in the vicinity of the mixing slab, molds, and base plates shall be maintained at 23.0 6 4.0 °C and
at a relative humidity of not less than 50 %.
4.2 The temperature of the mixing water used to prepare cement paste and mortar specimens shall be 23.0 6 2.0 °C.
5. Temperature Measuring Devices
5.1 Reference Temperature Measuring Device—used to verify the temperature recorder, must be accurate and readable to 0.5 ºC.
A copy of the certificate or report which verifies the accuracy shall be available in the laboratory.
NOTE 1—The ice-point method described in Test Method E77 may
...
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