ASTM C91-03a

Standard Specification for Masonry Cement

SCOPE
1.1 This specification covers three types of masonry cement for use where mortar for masonry is required.
1.2 The 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 IEEE/ASTM SI 10.
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 hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)

General Information

• Status: Historical
• Publication Date: 09-Jun-2003
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C01 - Cement
• Drafting Committee: C01.11 - Masonry Cement

Relations

• Replaces: ASTM C91-03 - Standard Specification for Masonry Cement
• Effective Date: 10-Jun-2003
• Replaced By: ASTM C91-05 - Standard Specification for Masonry Cement
• Effective Date: 15-Sep-2005
• Referred By: ASTM C110-20 - Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1660-10(2018) - Standard Specification for Thin-bed Mortar for Autoclaved Aerated Concrete (AAC) Masonry
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1722-23 - Standard Guide for Repair and Restoration of Dimension Stone
• Effective Date: 10-Jun-2003

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 91 – 03a
Standard Specification for
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Masonry Cement
ThisstandardisissuedunderthefixeddesignationC 91;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
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 C 187 Test Method for Normal Consistency of Hydraulic
3
Cement
1.1 This specification covers three types of masonry cement
3
C 188 Test Method for Density of Hydraulic Cement
for use where mortar for masonry is required.
3
C 219 Terminology Relating to Hydraulic Cement
1.2 The values stated in SI units are to be regarded as the
C 230/C 230M SpecificationforFlowTableforUseinTests
standard. Values in SI units shall be obtained by measurement
3
of Hydraulic Cement
inSIunitsorbyappropriateconversionofmeasurementsmade
C 266 Test Method for Time of Setting of Hydraulic Ce-
in other units, using the Rules for Conversion and Rounding
3
ment Paste by Gillmore Needles
given in IEEE/ASTM SI 10.
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C 270 Specification for Mortar for Unit Masonry
1.3 The text of this standard refers to notes and footnotes
C 305 PracticeforMechanicalMixingofHydraulicCement
which provide explanatory material. These notes and footnotes
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Pastes and Mortars of Plastic Consistency
(excluding those in tables and figures) shall not be considered
C 430 Test Method for Fineness of Hydraulic Cement by
as requirements of the standard.
3
the 45-µm (No. 325) Sieve
1.4 The following safety hazards caveat pertains only to
C 511 Specification for Moist Cabinets, Moist Rooms, and
Sections 16 and 17 of this specification. This standard does not
Water Storage Tanks Used in the Testing of Hydraulic
purport to address all of the safety concerns, if any, associated
3
Cements and Concretes
with its use. It is the responsibility of the user of this standard
3
C 778 Specification for Standard Sand
to establish appropriate safety and health practices and
C 1506 Test Method for Water Retention of Hydraulic
determine the applicability of regulatory limitations prior to
3
Cement-Based Mortars and Plasters
use. (Warning—Fresh hydraulic cementitious mixtures are
IEEE/ASTM SI 10 Standard for Use of the International
caustic and may cause chemical burns to skin and tissue upon
5
2 System of Units (SI): The Modern Metric System
prolonged exposure.)
3. Terminology
2. Referenced Documents
3.1 Definitions:
2.1 ASTM Standards:
3.1.1 masonry cement—a hydraulic cement, primarily used
C 109/C 109M Test Method for Compressive Strength of
in masonry and plastering construction, consisting of a mixture
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
3
of portland or blended hydraulic cement and plasticizing
Specimens)
materials (such as limestone, hydrated or hydraulic lime)
C 151 Test Method for Autoclave Expansion of Portland
3
together with other materials introduced to enhance one or
Cement
more properties such as setting time, workability, water reten-
C 183 Practice for Sampling and the Amount of Testing of
3
tion, and durability.
Hydraulic Cement
3.1.2 Other terms used in this specification are defined in
C 185 Test Method for Air Content of Hydraulic Cement
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Terminology C 219.
Mortar
4. Classification
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This specification is under the jurisdiction of ASTM Committee C01 on 4.1 Type N—For use in preparation of Specification C 270
Cement and is the direct responsibility of Subcommittee C01.11 on Masonry
Type N mortar without further addition of cements or hydrated
Cement.
lime, and for use in preparation of Specification C 270 Type S
Current edition approved June 10, 2003. Published August 2003. Originally
approved in 1932. Last previous edition approved in 2003 as C 91 – 03.
2
Annual Book of ASTM Standards, Vol 04.01. See the section on Safety
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Precautions in the Manual of Cement Testing. Annual Book of ASTM Standards, Vol 04.05.
3 5
Annual Book of ASTM Standards, Vol 04.01. Annual Book of ASTM Standards, Vol 14.04.
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C91–03a
orTypeMmortarwhencementisaddedinaccordancewiththe 11. Time of Setting
requirements of C 270.
11.1 Determine the time of setting by the Gillmore needle
4.2 Type S—For use in preparation of Specification C 270
method in accordance with Test Method C 266.
Type S mortar without further addition of cements or hydrated
lime.
12. Density
4.3 Type M—For use in preparation of Specification C 270
Type M mortar without further addition of cements or hydrated
12.1 Determine the density of the masonry cement in
lime.
accordance with Test Method C 188, using
...