ASTM C91/C91M-12
(Specification)Standard Specification for Masonry Cement
Standard Specification for Masonry Cement
ABSTRACT
This specification covers three types of masonry cement for use where mortar for masonry is required. Masonry cement shall conform to the applicable physical property requirements prescribed. The masonry cement shall be sampled in accordance with practice C 183. The temperature and relative humidity of the air in the vicinity of the mixing slab and dry materials, molds, base plates, and mixing bowl shall conform to the requirements of test method C 109/C 109M. Determine normal consistency by the Vicat apparatus in accordance with test method C 187. Determine autoclave expansion in accordance with test method C 151. Determine the time of setting by the Gillmore needle method in accordance with test method C 266. Determine the density of the masonry cement in accordance with test method C 188, using kerosene as the liquid. The sand shall be a blend of equal parts by weight of graded standard sand and standard 20-30 sand conforming to specification C 778. The compressive testing procedures for mortars are presented. Water retention shall be determined in accordance with the procedures in test method C 1506.
SCOPE
1.1 This specification covers three types of masonry cement for use where mortar for masonry is required.
1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the 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 , of measurements made in other units. Values are stated in only SI units when inch-pound units are not used in practice.
1.3 The text of this standard refers to notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
1.4 The following safety hazards caveat pertains only to Sections 16 and 17 of this specification. 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. (WarningFresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)
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Designation:C91/C91M −12
Standard Specification for
1
Masonry Cement
This standard is issued under the fixed designation C91/C91M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 2. Referenced Documents
3
1.1 This specification covers three types of masonry cement 2.1 ASTM Standards:
for use where mortar for masonry is required. C109/C109M Test Method for Compressive Strength of
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
1.2 Units—The values stated in either SI units or inch-
Specimens)
pound units are to be regarded separately as standard. The
C151 Test Method for Autoclave Expansion of Hydraulic
values stated in each system may not be exact equivalents;
Cement
therefore,eachsystemshallbeusedindependentlyoftheother.
C183 Practice for Sampling and the Amount of Testing of
Combining values from the two systems may result in non-
Hydraulic Cement
conformance with the standard. Values in SI units shall be
C185 Test Method for Air Content of Hydraulic Cement
obtained by measurement in SI units or by appropriate
Mortar
conversion, using the Rules for Conversion and Rounding
C187 Test Method for Amount of Water Required for Nor-
given in Standard IEEE/ASTM SI 10, of measurements made
mal Consistency of Hydraulic Cement Paste
in other units. Values are stated in only SI units when
C188 Test Method for Density of Hydraulic Cement
inch-pound units are not used in practice.
C219 Terminology Relating to Hydraulic Cement
1.3 The text of this standard refers to notes and footnotes
C266 Test Method for Time of Setting of Hydraulic-Cement
which provide explanatory material. These notes and footnotes
Paste by Gillmore Needles
(excluding those in tables and figures) shall not be considered
C270 Specification for Mortar for Unit Masonry
as requirements of the standard.
C305 Practice for Mechanical Mixing of Hydraulic Cement
1.4 The following safety hazards caveat pertains only to Pastes and Mortars of Plastic Consistency
Sections 16 and 17 of this specification. This standard does not
C430 Test Method for Fineness of Hydraulic Cement by the
purport to address all of the safety concerns, if any, associated
45-µm (No. 325) Sieve
with its use. It is the responsibility of the user of this standard C511 Specification for Mixing Rooms, Moist Cabinets,
to establish appropriate safety and health practices and
Moist Rooms, and Water Storage Tanks Used in the
determine the applicability of regulatory limitations prior to Testing of Hydraulic Cements and Concretes
use. (Warning—Fresh hydraulic cementitious mixtures are
C778 Specification for Standard Sand
caustic and may cause chemical burns to skin and tissue upon C1506 Test Method for Water Retention of Hydraulic
2
prolonged exposure.)
Cement-Based Mortars and Plasters
1.5 This international standard was developed in accor- IEEE/ASTM SI 10 Standard for Use of the International
dance with internationally recognized principles on standard-
System of Units (SI): The Modern Metric System
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 3. Terminology
mendations issued by the World Trade Organization Technical
3.1 Definitions:
Barriers to Trade (TBT) Committee.
3.1.1 masonry cement—a hydraulic cement, primarily used
in masonry and plastering construction, consisting of a mixture
of portland or blended hydraulic cement and plasticizing
1
This specification is under the jurisdiction of ASTM Committee C01 on
materials (such as limestone, hydrated or hydraulic lime)
Cement and is the direct responsibility of Subcommittee C01.11 on Masonry
Cement.
Current edition approved April 1, 2012. Published May 2012. Originally
3
approved in 1932. Last previous edition approved in 2005 as C91 – 05. DOI: For referenced ASTM standards, visit the ASTM website, www.astm.org, or
10.1520/C0091-12. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
Annual Book of ASTM Standards, Vol 04.01. See the section on Safety Standards volume information, refer to the standard’s Document Summary page on
Precautions in the Manual of Cement Testing. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C91/C91M−12
together with other materials introduced to enhance one or 9. Normal Consistency
more properties such as setting time, workability, water
9.1 Determine normal consistency by the V
...
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:C91–05 Designation: C91/C91M – 12
Standard Specification for
1
Masonry Cement
This standard is issued under the fixed designation C91/C91M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
1.1 This specification covers three types of masonry cement for use where mortar for masonry is required.
1.2The values stated in SI units are to be regarded as the standard. Values in SI units shall be obtained by measurement in SI
units or by appropriate conversion of measurements made in other units, using the Rules for Conversion and Rounding given in
1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated
in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values
from the two systems may result in non-conformance with the 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. Values are stated in only SI units when inch-pound units are not used in practice.
1.3 The text of this standard refers to notes and footnotes which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of the standard.
1.4 The following safety hazards caveat pertains only to Sections 16 and 17 of this specification. 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. (Warning—Fresh
2
hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)
2. Referenced Documents
3
2.1 ASTM Standards:
C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)
C151 Test Method for Autoclave Expansion of Hydraulic Cement
C183 Practice for Sampling and the Amount of Testing of Hydraulic Cement
C185 Test Method for Air Content of Hydraulic Cement Mortar
C187 Test Method for Amount of Water Required for Normal Consistency of Hydraulic Cement Paste
C188 Test Method for Density of Hydraulic Cement
C219 Terminology Relating to Hydraulic Cement
C266 Test Method for Time of Setting of Hydraulic-Cement Paste by Gillmore Needles
C270 Specification for Mortar for Unit Masonry
C305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
C430 Test Method for Fineness of Hydraulic Cement by the 45-m (No. 325) Sieve
C511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of
Hydraulic Cements and Concretes
C778 Specification for Sand
C1506 Test Method for Water Retention of Hydraulic Cement-Based Mortars and Plasters
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 masonry cement—a hydraulic cement, primarily used in masonry and plastering construction, consisting of a mixture of
1
This specification is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.11 on Masonry Cement.
Current edition approved Sept. 15, 2005. Published October 2005. Originally approved in 1932. Last previous edition approved in 2003 as C91–03a. DOI:
10.1520/C0091-05.
Current edition approvedApril 1, 2012. Published May 2012. Originally approved in 1932. Last previous edition approved in 2005 as C91 – 05. DOI: 10.1520/C0091-12.
2
Annual Book of ASTM Standards, Vol 04.01. See the section on Safety Precautions in the Manual of Cement Testing.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959
...
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