Standard Test Methods for Uncompacted Void Content of Fine Aggregate (as Influenced by Particle Shape, Surface Texture, and Grading)

SCOPE
1.1 These test methods describe the determination of the loose uncompacted void content of a sample of fine aggregate. When measured on any aggregate of a known grading, void content provides an indication of that aggregate's angularity, sphericity, and surface texture compared with other fine aggregates tested in the same grading. When void content is measured on an as-received fine-aggregate grading, it can be an indicator of the effect of the fine aggregate on the workability of a mixture in which it may be used.
1.2 Three procedures are included for the measurement of void content. Two use graded fine aggregate (standard grading or as-received grading), and the other uses several individual size fractions for void content determinations:
1.2.1 Standard Graded Sample (Test Method A) -This test method uses a standard fine aggregate grading that is obtained by combining individual sieve fractions from a typical fine aggregate sieve analysis. See the section on Preparation of Test Samples for the grading.
1.2.2 Individual Size Fractions (Test Method B) -This test method uses each of three fine aggregate size fractions: ( ) 2.36 mm (No. 8) to 1.18 mm (No. 16); ( ) 1.18 mm (No. 16) to 600 [mu]m (No. 30); and ( ) 600 [mu]m (No. 30) to 300 [mu]m (No. 50). For this test method, each size is tested separately.
1.2.3 As-Received Grading (Test Method C) -This test method uses that portion of the fine aggregate finer than a 4.75-mm (No. 4) sieve.
1.2.4 See the section on Significance and Use for guidance on the method to be used.
1.3 The values stated in SI units shall be regarded as the standard.
1.4 This standard does not purport to address all of the safety problems, 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.

General Information

Status
Historical
Publication Date
09-Jul-2003
Drafting Committee
Current Stage
Ref Project

Relations

Buy Standard

Standard
ASTM C1252-03 - Standard Test Methods for Uncompacted Void Content of Fine Aggregate (as Influenced by Particle Shape, Surface Texture, and Grading)
English language
5 pages
sale 15% off
Preview
sale 15% off
Preview

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 1252 – 03
Standard Test Methods for
Uncompacted Void Content of Fine Aggregate (as
Influenced by Particle Shape, Surface Texture, and
1
Grading)
This standard is issued under the fixed designation C 1252; 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 2. Referenced Documents
1.1 These test methods cover the determination of the loose 2.1 ASTM Standards:
2
uncompacted void content of a sample of fine aggregate.When B 88 Specification for Seamless Copper Water Tube
measured on any aggregate of a known grading, void content B 88M Specification for Seamless Copper Water Tube
2
provides an indication of that aggregate’s angularity, spheric- [Metric]
ity, and surface texture compared with other fine aggregates C 29/29M Test Method for Bulk Density (Unit Weight) and
3
tested in the same grading. When void content is measured on Voids in Aggregate
an as-received fine-aggregate grading, it can be an indicator of C 117 Test Method for Material Finer Than 75-µm (No.
3
the effect of the fine aggregate on the workability of a mixture 200) Sieve in Mineral Aggregates by Washing
in which it may be used. C 125 Terminology Relating to Concrete and Concrete
3
1.2 Three procedures are included for the measurement of Aggregates
void content. Two use graded fine aggregate (standard grading C 128 Test Method for Density, Relative Density (Specific
3
or as-received grading), and the other uses several individual Gravity), and Absorption of Fine Aggregate
size fractions for void content determinations: C 136 Test Method for Sieve Analysis of Fine and Coarse
3
1.2.1 Standard Graded Sample (Test Method A)—This test Aggregates
method uses a standard fine aggregate grading that is obtained C 670 Practice for Preparing Precision and Bias Statements
3
by combining individual sieve fractions from a typical fine for Test Methods for Construction Materials
aggregate sieve analysis. See the section on Preparation ofTest C 702 Practice for Reducing Samples of Aggregate to
3
Samples for the grading. Testing Size
4
1.2.2 Individual Size Fractions (Test Method B)—This test C 778 Specification for Standard Sand
5
method uses each of three fine aggregate size fractions: (a) D 75 Practice for Sampling Aggregates
2.36 mm (No. 8) to 1.18 mm (No. 16); (b) 1.18 mm (No. 16) 2.2 ACI Document:
6
to 600 µm (No. 30); and (c) 600 µm (No. 30) to 300 µm (No. ACI 116R Cement and Concrete Terminology
50). For this test method, each size is tested separately.
3. Terminology
1.2.3 As-Received Grading (Test Method C)—This test
3.1 Terms used in these test methods are defined in Termi-
method uses that portion of the fine aggregate finer than a
4.75-mm (No. 4) sieve. nology C 125 or ACI 116R.
1.2.4 See the section on Significance and Use for guidance
4. Summary of Test Method
on the method to be used.
4.1 A nominal 100-mL calibrated cylindrical measure is
1.3 The values stated in SI units shall be regarded as the
filled with fine aggregate of prescribed grading by allowing the
standard.
sample to flow through a funnel from a fixed height into the
1.4 This standard does not purport to address all of the
measure. The fine aggregate is struck off and its mass is
safety concerns, if any, associated with its use. It is the
determined by weighing. Uncompacted void content is calcu-
responsibility of the user of this standard to establish appro-
lated as the difference between the volume of the cylindrical
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
2
Annual Book of ASTM Standards, Vol 02.01.
1 3
These test methods are under the jurisdiction of ASTM Committee C09 on Annual Book of ASTM Standards, Vol 04.02.
4
ConcreteandConcreteAggregatesandarethedirectresponsibilityofSubcommittee Annual Book of ASTM Standards, Vol 04.01.
5
C09.20 on Normal Weight Aggregates. Annual Book of ASTM Standards, Vol 04.03.
6
Current edition approved July 10, 2003. Published October 2003. Originally Available fromAmerican Concrete Institute (ACI), P.O. Box 9094, Farmington
approved in 1993. Last previous edition approved in 1998 as C 1252 – 98. Hills, MI 48333.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C 1252 – 03
measure and the absolute volume of the fine aggregate col- being equal, or nearly so. The void content is actually a
lected in the measure. Uncompacted void content is calculated function of the volume of each size fraction. If the type of rock
using the dry relative density (sp
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.