ASTM D6473/D6473M-24
(Test Method)Standard Test Method for Specific Gravity and Absorption of Rock for Erosion Control
Standard Test Method for Specific Gravity and Absorption of Rock for Erosion Control
SIGNIFICANCE AND USE
5.1 Rock for erosion control is composed of pieces of natural rock that are placed on construction projects, shorelines, streambeds, bridge abutments, pilings, and other structures to minimize the effects of erosion. The ability of rock to withstand deterioration from weathering affects both the effectiveness of the project and its cost. The specific gravity and absorption of rock provide useful information that can be used in evaluating the durability of the rock as well as its resistance to movement by water.
5.2 The absorption of water into rock may affect its durability under freezing conditions and salt crystallization conditions. In addition, the absorption test has been used as an index test in determining whether additional tests are needed to evaluate the durability of a rock.
5.3 Test specimens equal in size to the proposed design size would provide the best correlations between laboratory tests and actual field performance, however this is usually neither practical nor economically feasible.
5.4 The results of these tests are not to be used as the sole basis for determination of rock durability, and shall be used in conjunction with the results of other tests.
5.5 These test methods have been used to evaluate different types of rocks. There have been rare occasions when test results have provided data that have not agreed with the durability of rock under actual field conditions. For example, some rocks with low absorption values have fragmented in actual usage and some with high absorption values have proven to be durable.
Note 2: The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies which meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure r...
SCOPE
1.1 This test method covers the determination of specific gravity and absorption of rock for erosion control. The specific gravity may be expressed as bulk specific gravity or apparent specific gravity. Bulk specific gravity and absorption are based on a 24 ± 4-h soaking time for the rock specimens tested. This test is appropriate for breakwater stone, armor stone, riprap, and gabion sized rock materials, or similar.
1.2 The use of reclaimed concrete and other materials is beyond the scope of this test method.
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
1.3.1 The gravitational system of inch-pound units is used when dealing with inch-pound units. In the system, the pound (lbf) represents a unit of force (weight), while the units for mass is slugs. The slug unit is not given, unless dynamic (F = ma) calculations are involved.
1.3.2 It is common practice in the engineering/construction profession to concurrently use pounds to represent both a unit of mass (lbm) and of force (lbf). This practice implicitly combines two separate systems of units; the absolute and the gravitational systems. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard. As stated, this standard includes the gravitational system of inch-pound units and does not use/present the slug unit of mass. However, the use of balances and scales recording pounds of mass (lbm) shall not be regarded as nonconformance with this standard.
1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026, unless superseded by this standard.
1...
General Information
Relations
Buy Standard
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D6473/D6473M − 24
Standard Test Method for
Specific Gravity and Absorption of Rock for Erosion
1
Control
This standard is issued under the fixed designation D6473/D6473M; 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* 1.4.1 For purposes of comparing measured or calculated
value(s) with specified limits, the measured or calculated
1.1 This test method covers the determination of specific
value(s) shall be rounded to the nearest decimal or significant
gravity and absorption of rock for erosion control. The specific
digits in the specified limits.
gravity may be expressed as bulk specific gravity or apparent
1.4.2 The procedures used to specify how data are collected/
specific gravity. Bulk specific gravity and absorption are based
recorded or calculated, in this standard are regarded as the
on a 24 6 4-h soaking time for the rock specimens tested. This
industry standard. In addition, they are representative of the
test is appropriate for breakwater stone, armor stone, riprap,
significant digits that generally should be retained. The proce-
and gabion sized rock materials, or similar.
dures used do not consider material variation, purpose for
1.2 The use of reclaimed concrete and other materials is
obtaining the data, special purpose studies, or any consider-
beyond the scope of this test method.
ations for the user’s objectives; and it is common practice to
increase or reduce significant digits of reported data to be
1.3 Units—The values stated in either SI units or inch-
pound units are to be regarded separately as standard. The commensurate with these considerations. It is beyond the scope
of this standard to consider significant digits used in analytical
values stated in each system may not be exact equivalents;
therefore, each system shall be used independently of the other. methods for engineering design.
Combining values from the two systems may result in noncon-
1.5 This standard does not purport to address all of the
formance with the standard.
safety concerns, if any, associated with its use. It is the
1.3.1 The gravitational system of inch-pound units is used
responsibility of the user of this standard to establish appro-
when dealing with inch-pound units. In the system, the pound
priate safety, health, and environmental practices and deter-
(lbf) represents a unit of force (weight), while the units for
mine the applicability of regulatory limitations prior to use.
mass is slugs. The slug unit is not given, unless dynamic (F =
1.6 This international standard was developed in accor-
ma) calculations are involved.
dance with internationally recognized principles on standard-
1.3.2 It is common practice in the engineering/construction
ization established in the Decision on Principles for the
profession to concurrently use pounds to represent both a unit
Development of International Standards, Guides and Recom-
of mass (lbm) and of force (lbf). This practice implicitly
mendations issued by the World Trade Organization Technical
combines two separate systems of units; the absolute and the
Barriers to Trade (TBT) Committee.
gravitational systems. It is scientifically undesirable to com-
bine the use of two separate sets of inch-pound units within a 2. Referenced Documents
single standard. As stated, this standard includes the gravita- 2
2.1 ASTM Standards:
tional system of inch-pound units and does not use/present the
C127 Test Method for Relative Density (Specific Gravity)
3
slug unit of mass. However, the use of balances and scales
and Absorption of Coarse Aggregate (Withdrawn 2024)
recording pounds of mass (lbm) shall not be regarded as
D653 Terminology Relating to Soil, Rock, and Contained
nonconformance with this standard.
Fluids
1.4 All observed and calculated values shall conform to the D3740 Practice for Minimum Requirements for Agencies
guidelines for significant digits and rounding established in Engaged in Testing and/or Inspection of Soil and Rock as
Practice D6026, unless superseded by this standard. Used in Engineering Design and Construction
1 2
This test method is under the jurisdiction of ASTM Committee D18 on Soil and For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Rock and is the direct responsibility of Subcommittee D18.17 on Rock for Erosion contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Control. Standards volume information, refer to the standard’s Document Su
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6473 − 15 D6473/D6473M − 24
Standard Test Method for
Specific Gravity and Absorption of Rock for Erosion
1
Control
This standard is issued under the fixed designation D6473;D6473/D6473M; 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*
1.1 This test method covers the determination of specific gravity and absorption of rock for erosion control, commonly referred
to as riprap or armor stone. control. The specific gravity may be expressed as bulk specific gravity or apparent specific gravity. Bulk
specific gravity and absorption are based on a 24 6 4-h soaking time for the rock specimens tested. This test is appropriate for
breakwater stone, armor stone, riprap, and gabion sized rock materials.materials, or similar.
1.2 The use of reclaimed concrete and other materials is beyond the scope of this test method.
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as the standard. The values given
in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered
standard. stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
Combining values from the two systems may result in nonconformance with the standard.
1.3.1 The gravitational system of inch-pound units is used when dealing with inch-pound units. In the system, the pound (lbf)
represents a unit of force (weight), while the units for mass is slugs. The slug unit is not given, unless dynamic (F = ma)
calculations are involved.
1.3.2 It is common practice in the engineering/construction profession to concurrently use pounds to represent both a unit of mass
(lbm) and of force (lbf). This practice implicitly combines two separate systems of units; the absolute and the gravitational systems.
It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard. As stated, this
standard includes the gravitational system of inch-pound units and does not use/present the slug unit of mass. However, the use
of balances and scales recording pounds of mass (lbm) shall not be regarded as nonconformance with this standard.
1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice
D6026, unless superseded by this standard.
1.4.1 For purposes of comparing measured or calculated value(s) with specified limits, the measured or calculated value(s) shall
be rounded to the nearest decimal or significant digits in the specified limits.
1.4.2 The procedures used to specify how data are collected/recorded or calculated, in this standard are regarded as the industry
standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not
consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives;
1
This test method is under the jurisdiction of ASTM Committee D18 on Soil and Rock and is the direct responsibility of Subcommittee D18.17 on Rock for Erosion
Control.
Current edition approved July 1, 2015Jan. 15, 2024. Published July 2015March 2024. Originally approved in 1999. Last previous edition approved in 20102015 as
D6473 - 10.D6473 - 15. DOI: 10.1520/D6473-15.10.1520/D6473_D6473M-24.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6473/D6473M − 24
and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations.
It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering design.
1.5 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.