ASTM C1714/C1714M-09

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Designation: C1714/C1714M – 09
Standard Specification for
Preblended Dry Mortar Mix for Unit Masonry
This standard is issued under the fixed designation C1714/C1714M; 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 C260 Specification for Air-Entraining Admixtures for Con-
crete
1.1 This specification covers masonry mortars whose mate-
C270 Specification for Mortar for Unit Masonry
rials and design requirements are governed by Specification
C305 Practice for Mechanical Mixing of Hydraulic Cement
C270 but are preblended dry in a factory instead of produced
Pastes and Mortars of Plastic Consistency
from individual raw materials delivered to the job-site.
C780 Test Method for Preconstruction and Construction
1.2 The field-sampling, testing, directly comparable test
Evaluation of Mortars for Plain and Reinforced Unit
results, packaging, and the traceability of ingredients of preb-
Masonry
lended dry mortar mix differ from job site mixed mortars and
C979 Specification for Pigments for Integrally Colored
this standard specifically addresses these issues. The tight
Concrete
controlofingredientratiospossiblewithpreblendeddrymortar
C1180 Terminology of Mortar and Grout for Unit Masonry
is also covered.
C1384 Specification for Admixtures for Masonry Mortars
1.3 The text of this specification refers to notes and foot-
C1437 Test Method for Flow of Hydraulic Cement Mortar
notes, which provide explanatory material. These notes and
C1586 Guide for Quality Assurance of Mortars
footnotes (excluding those in tables and figures) shall not be
considered the requirements of the standard.
3. Terminology
1.4 The values stated in either SI units or inch-pound units
3.1 For definition of terms used in this specification, refer to
are to be regarded separately as standard. The values stated in
Terminology C1180.
each system may not be exact equivalents; therefore, each
3.2 Definitions of Terms Specific to This Standard:
system shall be used independently of the other. Combining
3.3 preblended dry mortar mix, n—a mix of dry aggregate;
values from the two systems may result in non-conformance
portland cement and hydrated lime, blended hydraulic cement,
with the standard.
masonrycement,hydrauliccement,ormortarcement;andmay
1.5 This standard does not purport to address all of the
contain additives used to enhance one or more properties such
safety concerns, if any, associated with its use. It is the
as setting time, workability, water retention, bond and durabil-
responsibility of the user of this standard to establish appro-
ityorcolorpigment;andarethoroughlyblendedtogetheratthe
priate safety and health practices and determine the applica-
factory without the addition of water.
bility of regulatory limitations prior to use. Warning—Fresh
3.4 additive, n—a dry mortar material other than the Speci-
hydraulic cementitious mixtures are caustic and may cause
fication C270 prescribed materials of aggregate and cementi-
chemical burns to skin and tissue upon prolonged exposure.
tious materials that is added to a dry mortar mix at the batch
2. Referenced Documents plant to modify one or more properties of the conventional
masonry mortar.
2.1 ASTM Standards:
C144 Specification for Aggregate for Masonry Mortar
4. Classification
4.1 The classifications of mortars in this specification are as
This specification is under the jurisdiction of ASTM Committee C12 on
described in Specification C270.
Mortars and Grouts for Unit Masonry and is the direct responsibility of Subcom-
mittee C12.03 on Specifications for Mortars.
5. Specifying Mortar
Current edition approved Dec. 15, 2009. Published December 2009. DOI:
10.1520/C1714_C1714M-09.
5.1 Specify type of mortar desired.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.2 Preblended dry mortar mix shall be a mortar meeting
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
both the requirements of Specification C270 and the require-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. ments of this specification.
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C1714/C1714M – 09
5.2.1 The property specification requirements of Specifica- 8.2 Samples shall be of sufficient size to conduct all of the
tion C270 shall govern unless the proportion specification desired testing.At a minimum, take three random samples of at
requirements are specifically requested. least 2.3 kg [5 lb] each and combine them to form a single
sample.
6. Materials
8.3 Fieldsamplestakenfromtheoriginalcontainersshallbe
6.1 Materials shall conform to Specification C270 except as
marked with the package markings as described in Section 14.
follows:
The date of sampling shall also be included.
6.1.1 Additives—Shall comply with the admixture require-
8.3.1 Samples taken from job site silos shall be marked
ments of Specification C1384, except as follows:
with silo number or location and the sample date. If possible,
6.1.1.1 The Specification C1384 reference mortar shall be
the samples shall also be marked with the package markings
this mortar without the additives and the Specification C1384
from the original containers.
admixed mortar shall be this mortar with the additives.
NOTE 2—Silos are typically filled from large bulk bags or super sacks,
6.1.1.2 When more than one additive meeting the require-
these large bags will have the product identification markings from
ments of Specification C1384 is used, the chloride limits of
Section 14 and may still be available on the job-site.
Specification C1384 shall apply to the sum of all of these
8.3.2 Samples taken from a mobile batch plant filled pneu-
additives.
6.1.1.3 Air entraining materials shall comply with C260. matically at the job site shall be marked in accordance with
Section 14.
6.1.1.4 Two air-entraining materials shall not be combined
in the mortar mix.
9. Testing
6.1.2 Additives used as coloring pigments shall comply
with the requirements of C979.
9.1 Testing shall be conducted in accordance with Specifi-
cation C270 with the following exceptions:
7. Manufacture and Use
9.1.1 For mortar mixes meeting the proportion specifica-
7.1 All of the mortar mix materials shall be dry and
tions of C270, testing shall be performed by using verification
measured by weight. The batch scales shall be calibrated at
of ingredient proportions (batch tickets) archived from 7.3.In
least annually and shall be capable of consistently measuring
addition, the aggregate shall be tested for compliance with the
each ingredient to within 1 % of the total batch weight for each
requirements of Specification C144.
ingredient that is added at a rate of at least 20 % of total batch
9.1.2 Mixing—Mix 3000 6 3 g [6.61 6 0.01 lb] of
weight, and to within 5 % of the individual ingredients weight
preblended dry mortar mix in accordance with Practice C305
for each ingredient that is added at a rate of less than 20 % of
with the exception that the combined material is added at the
total batch weight.
time of cement addition in Practice C305. Additional water
7.2 Each ingredient shall be added within a tolerance of
may be added in the final mix period to adjust the flow.
610 % of the individual ingredients’ target weight.
Determine the flow in accordance with Test Method C1437.
7.3 The weight of each mortar mix ingredient of the final
Use sufficient water to produce a flow of 110 65%.
batch shall be recorded and archived for every batch.
9.1.3 Air Content—If the mixture proportions and densities
NOTE 1— This batch information is commonly referred to as a batch
of all constituent materials are known, calculate the air content
ticket.
in accorda
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