ASTM C1328-00
(Specification)Standard Specification for Plastic (Stucco) Cement
Standard Specification for Plastic (Stucco) Cement
SCOPE
1.1 This specification covers two types of plastic cement for use in portland cement-based plasters for exterior (stucco) and interior application.
1.2 The values stated in SI units are to be regarded as the standard.
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 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
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Designation: C 1328 – 00
Standard Specification for
Plastic (Stucco) Cement
This standard is issued under the fixed designation C 1328; 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 C 305 Practice for Mechanical Mixing of Hydraulic Cement
Pastes and Mortars of Plastic Consistency
1.1 This specification covers two types of plastic cement for
C 430 Test Method for Fineness of Hydraulic Cement by
use in portland cement-based plasters for exterior (stucco) and
the 45-μm (No. 325) Sieve
interior application.
C 511 Specification for Moist Cabinets, Moist Rooms, and
1.2 The values stated in SI units are to be regarded as the
Water Storage Tanks Used in the Testing of Hydraulic
standard. Values in SI units shall be obtained by measurement
Cements and Concretes
in SI units or by appropriate conversion, using the Rules for
C 778 Specification for Standard Sand
Conversion and Rounding given in IEEE/ASTM SI 10, of
C 926 Specification for Application of Portland Cement-
measurements made in other units.
Based Plaster
1.3 The text of this standard refers to notes and footnotes
IEEE/ASTM SI 10 Standard for Use of the International
that provide explanatory material. These notes and footnotes
System of Units (SI) (the Modernized Metric System)
(excluding those in tables and figures) shall not be considered
as requirements of the standard.
3. Terminology
1.4 The following safety hazards caveat pertains only to
3.1 Definitions—Terms used in this specification are defined
Sections 15 and 16. This standard does not purport to address
in Terminology C 219 and Specification C 926.
all of the safety concerns, if any, associated with its use. It is
3.2 Definition of Term Specific to This Standard:
the responsibility of the user of this standard to establish
3.2.1 plastic cement—a hydraulic cement, primarily used in
appropriate safety and health practices and determine the
portland cement-based plastering construction, consisting of a
applicability of regulatory limitations prior to use.
mixture of portland or blended hydraulic cement and plasticiz-
2. Referenced Documents ing materials (such as limestone or hydrated or hydraulic lime),
together with other materials introduced to enhance one or
2.1 ASTM Standards:
more properties such as setting time, workability, water reten-
C 91 Specification for Masonry Cement
tion, and durability.
C 109/C 109M Test Method for Compressive Strength of
3.2.1.1 Discussion—The term “plastic” does not refer to the
Hydraulic Cement Mortars (Using 2-in. or 50-mm Cube
inclusion of one or more organic components in the cement.
Specimens)
The cement is predominantly inorganic in chemical composi-
C 151 Test Method for Autoclave Expansion of Portland
tion. The term “plastic” refers to the ability of the cement to
Cement
impart to the plaster a high degree of workability, and for the
C 183 Practice for Sampling and the Amount of Testing of
2 plaster to remain workable or plastic for a period of time so
Hydraulic Cement
that, after initial application and floating on the wall, it can be
C 185 Test Method for Air Content of Hydraulic Cement
2 reworked to obtain both densification and desired texture.
Mortar
C 187 Test Method for Normal Consistency of Hydraulic
4. Physical Properties
Cement
2 4.1 Plastic cement shall conform to the applicable require-
C 188 Test Method for Density of Hydraulic Cement
2 ments prescribed in Table 1.
C 219 Terminology Relating to Hydraulic Cement
C 230/C 230M Specification for Flow Table for Use in Tests
5. Sampling
of Hydraulic Cement
5.1 At the option of the purchaser, the cement shall be
C 266 Test Method for Time of Setting of Hydraulic-
sampled and tested to verify compliance with this specification,
Cement Paste by Gillmore Needles
sampling and testing shall be performed in accordance with
Practice C 183.
This specification is under the jurisdiction of ASTM Committee C-1 on Cement
5.2 Practice C 183 is not designed for manufacturing quality
and is the direct responsibility of Subcommittee C01.11 on Masonry Cement.
control and is not required for manufacturer’s certification.
Current edition approved Jan. 10, 2000. Published March 2000. Originally
published as C 1328 – 96. Last previous edition C 1328 – 98.
2 3
Annual Book of ASTM Standards, Vol 04.01. Annual Book of ASTM Standards, Vol 14.02.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
C 1328
TABLE 1 Physical Requirements
Plastic Cement Type S M
Fineness, residue on a 45-μm (No. 325) sieve, max,% 24 24
Autoclave expansion, max, % 1.0 1.0
Time of setting, Gillmore method:
Initial set, min, not less than 90 90
Final set, min, not more than 1440 1440
Compressive strength (average of three cubes):
The compressive strength of mortar cubes, composed of 1 part cement and 3 parts blended sand (half graded standard sand and half
standard 20–30 sand) by volume, prepared and tested in accordance with this specification, shall be equal to or higher than the
values specified for the ages indicated below:
7 days, MPa (psi) 9.0 (1300) 12.4 (1800)
28 days, MPa (psi) 14.5 (2100) 20.0 (2900)
Air content of mortar:
Min, volume% 88
Max, volume % 20 20
Water retention value, min, %, of original flow 70 70
6. Temperature and Humidity 12.4 Measure, Straightedge, Tapping Stick, and Spoon,
conforming to the requirements given in Test Method C 185.
6.1 The temperature and relative humidity of the air in the
12.5 Specimen (Cube) Molds—Molds shall be prepared in
vicinity of the mixing slab and dry materials, molds, base
accordance with Test Method C 109/C 109M.
plates, and mixing bowl shall conform to the requirements of
Test Method C 109/C 109M.
13. Blended Sand
6.2 The moist cabinet or moist room shall conform to the
13.1 The sand shall be a blend of equal parts by weight of
requirements of Specification C 511.
graded standard sand and standard 20–30 sand conforming to
7. Fineness
Specification C 778.
7.1 Determine the residue on the 45-μm (No. 325) sieve in
14. Preparation of Plaster
accordance with Test Method C 430.
14.1 Proportions for Plaster—Plaster for air entrainment,
8. Normal Consistency
compressive strength, and water retention tests shall be pro-
portioned to contain 1620 g of sand and a mass of cement, in
8.1 Determine normal consistency by the Vicat apparatus in
grams, as indicated in Table 2. The sand shall consist of 810 g
accordance with Test Method C 187.
of graded standard sand and 810 g of 20–30 standard sand
9. Autoclave Expansion
(Note 1). The quantity of water, measured in millilitres, shall
9.1 Determine the autoclave expansion in accordance with be such as to produce a flow of 110 6 5, as determined by Test
Method C 109/C 109M.
Test Method C 151. After molding, store the bars in the moist
cabinet or room for 48 h 6 30 min before removal from the
NOTE 1—Historically, field-mixed plaster has been proportioned by
molds for measurement and testing in the autoclave. Calculate
volume measured in increments or fractions of 1 ft . The comparable
the difference in length of the test specimen before and after
whole SI-unit volume to 1 ft is 28 L. The specified plaster proportions
autoclaving to the nearest 0.01 % of the effective gage length, approximate the 1:3 nominal proportions by volume, commonly specified
for construction, on the basis of the following assumed mass and volume
and report as th
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