ASTM C778-13

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Designation:C778 −13
Standard Specification for
1
Standard Sand
This standard is issued under the fixed designation C778; 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* Testing of Hydraulic Cements
E11 Specification for Woven Wire Test Sieve Cloth and Test
1.1 This specification covers standard sand for use in the
Sieves
testing of hydraulic cements.
IEEE/ASTM SI 10 Standard for Use of the International
1.2 The values stated in SI units are to be regarded as the
System of Units (SI): The Modern Metric System
standard.
1.3 Values in SI units shall be obtained by measurement in 3. Terminology
SI units or by appropriate conversion, using the Rules for
3.1 Definitions of Terms Specific to This Standard:
Conversion and Rounding given in IEEE/ASTM SI 10,of
3.1.1 20–30 sand, n—standard sand, predominantly graded
measurements made in other units.
to pass a 850-µm (No. 20) sieve and be retained on a 600-µm
1.4 This standard does not purport to address all of the
(No. 30) sieve.
safety concerns, if any, associated with its use. It is the
3.1.2 graded sand, n—standard sand, predominantly graded
responsibility of the user of this standard to establish appro-
between the 600-µm (No. 30) sieve and the 150-µm (No. 100)
priate safety and health practices and determine the applica-
sieve.
bility of regulatory limitations prior to use.
3.1.3 standard sand, n—silica sand, composed almost en-
2. Referenced Documents
tirely of naturally rounded grains of nearly pure quartz, used
2
2.1 ASTM Standards: for preparing mortars in the testing of hydraulic cements.
C109/C109M Test Method for Compressive Strength of
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube 4. Requirements
Specimens)
4.1 SandshallmeettherequirementsofTable1withrespect
C127 Test Method for Relative Density (Specific Gravity)
to grading, source of sand, and absence of undesirable air
and Absorption of Coarse Aggregate
entraining characteristics.
C136 Test Method for Sieve Analysis of Fine and Coarse
Aggregates
METHODS OF SAMPLING AND TESTING
C150 Specification for Portland Cement
STANDARD SANDS
C185 Test Method for Air Content of Hydraulic Cement
Mortar
5. Apparatus
C595 Specification for Blended Hydraulic Cements
5.1 Sieves—The sieves shall be standard 203-mm (8-in.)
C702 PracticeforReducingSamplesofAggregatetoTesting
diameter, full-height, wire-cloth sieves, conforming to the
Size
requirements of Specification E11, and of the following sizes:
C1005 Specification for Reference Masses and Devices for
Determining Mass and Volume for Use in the Physical 1.18-mm (No. 16) 425-µm (No. 40)
850-µm (No. 20) 300-µm (No. 50)
600-µm (No. 30) 150-µm (No. 100)
75-µm (No. 200)
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
5.2 Sample Splitter—The sample splitter, receptacles, and
Standards.
feeder pan or hopper shall conform to the general design
CurrenteditionapprovedJune1,2013.PublishedJuly2013.Originallyapproved
requirements listed in MethodA, apparatus section of Practice
in 1974. Last previous edition approved in 2012 as C778 – 12. DOI: 10.1520/
C0778-13.
C702, except that the device shall have no fewer than eight
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
chutes having a maximum opening no greater than 13 mm, and
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
a minimum opening at least three times the diameter of the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. largest particle of sand in a sample to be split.
*A Summary of Changes section appears at the end of this standard
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C778−13
TABLE 1 Standard Sand Requirements
for a test. Prepare two batches of each of “washed” and “as
Characteristics 20-30 Sand Graded Sand received” sand for test following the procedures in Test
Grading, percent passing sieve: Method C185 for 20–30 sand orTest Method C109/C109M for
1.18 mm (No. 16) 100 100
graded sand.
850 µm (No. 20) 85 to 100
8.1.2 Tests for air-entraining potential of a standard sand
600 µm (No. 30) 0 to 5 96 to 100
425 µm (No. 40) 65 to 75 shall be made on a single day by a single operator.
300 µm (No. 50) 20 to 30
8.2 20–30 Sand—Prepare two batches of mortar with
150 µm (No. 100) 0 to 4
Dif
...