Standard Test Method for Evaluation of Durability of Rock for Erosion Control Using Sodium Sulfate or Magnesium Sulfate

SIGNIFICANCE AND USE
5.1 Rock for erosion control consists of individual pieces of natural stone. The ability of these individual pieces of stone to resist deterioration due to weathering action affects the stability of the integral placement of rock for erosion control and hence, the stability of construction projects, structures, shorelines, and stream banks.  
5.2 The sodium sulfate or magnesium sulfate soundness test is one method by which to estimate qualitatively the durability of rock under weathering conditions. This test method was developed to be used in conjunction with additional test methods listed in Practice D4992. This test method does not provide an absolute value, but rather an indication of the resistance to freezing and thawing; therefore, the results of this test method are not to be used as the sole basis for the determination of rock durability.  
5.3 This test method has been used to evaluate many different types of rocks. There have been occasions when test results have provided data that have not agreed with the durability of rock under actual field conditions; samples yielding a low soundness loss have disintegrated in actual usage, and the reverse has been true.Note 1—The quality of results produced by this standard is dependent on the competence of the personnel performing it and suitability of the equipment and facilities used. Agencies that 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 reliable results. Reliable results depend on many factors and Practice D3740 provides a means of evaluating some of them.
SCOPE
1.1 This test method covers test procedures for evaluating the soundness of rock for erosion control by the effects of a sodium or magnesium sulfate solution on slabs of rock. The test is an accelerated weathering test that simulates the freezing and thawing of cold weather exposure. The rock slabs, prepared in accordance with procedures in Practice D5121, are intended to be representative of erosion control sized materials and their inherent weaknesses. The test is appropriate for breakwater stone, armor stone, riprap and gabion sized rock materials.
The limitations of this test are twofold. First the test is a simulation of freezing and thawing conditions. The internal expansive force, derived from the rehydration of the salt upon re-immersion, simulates the expansion of water on freezing relying on chemical crystal formation to simulate freezing rather than the actual freezing of water. Secondly the size of the cut rock slab specimens may eliminate some of the internal defects present in the rock structure. The test specimens may not be representative of the quality of the larger rock samples used in construction. Careful examination of the rock source and proper sampling are essential in minimizing this limitation.  
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 [presented in brackets] 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 non-conformance with the 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 additi...

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ASTM D5240/D5240M-12 - Standard Test Method for Evaluation of Durability of Rock for Erosion Control Using Sodium Sulfate or Magnesium Sulfate
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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: D5240/D5240M − 12
StandardTest Method for
Evaluation of Durability of Rock for Erosion Control Using
1
Sodium Sulfate or Magnesium Sulfate
This standard is issued under the fixed designation D5240/D5240M; 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* value(s) shall be rounded to the nearest decimal or significant
digits in the specified limits.
1.1 This test method covers test procedures for evaluating
1.4.2 Theproceduresusedtospecifyhowdataarecollected/
the soundness of rock for erosion control by the effects of a
recorded or calculated, in this standard are regarded as the
sodium or magnesium sulfate solution on slabs of rock. The
industry standard. In addition, they are representative of the
testisanacceleratedweatheringtestthatsimulatesthefreezing
significant digits that generally should be retained. The proce-
and thawing of cold weather exposure. The rock slabs, pre-
dures used do not consider material variation, purpose for
pared in accordance with procedures in Practice D5121, are
obtaining the data, special purpose studies, or any consider-
intended to be representative of erosion control sized materials
ations for the user’s objectives; and it is common practice to
and their inherent weaknesses. The test is appropriate for
increase or reduce significant digits of reported data to be
breakwater stone, armor stone, riprap and gabion sized rock
commensuratewiththeseconsiderations.Itisbeyondthescope
materials.
of this standard to consider significant digits used in analytical
The limitations of this test are twofold. First the test is a
methods for engineering design.
simulation of freezing and thawing conditions. The internal
1.5 This standard does not purport to address all of the
expansive force, derived from the rehydration of the salt upon
safety concerns, if any, associated with its use. It is the
re-immersion, simulates the expansion of water on freezing
responsibility of the user of this standard to establish appro-
relying on chemical crystal formation to simulate freezing
priate safety and health practices and determine the applica-
ratherthantheactualfreezingofwater.Secondlythesizeofthe
bility of regulatory limitations prior to use.
cut rock slab specimens may eliminate some of the internal
defects present in the rock structure. The test specimens may
2. Referenced Documents
not be representative of the quality of the larger rock samples
2
used in construction. Careful examination of the rock source
2.1 ASTM Standards:
andpropersamplingareessentialinminimizingthislimitation.
C88 Test Method for Soundness of Aggregates by Use of
Sodium Sulfate or Magnesium Sulfate
1.2 The use of reclaimed concrete and other materials is
C295 Guide for Petrographic Examination ofAggregates for
beyond the scope of this test method.
Concrete
1.3 Units—The values stated in either SI units or inch-
D653 Terminology Relating to Soil, Rock, and Contained
pound units [presented in brackets] are to be regarded sepa-
Fluids
rately as standard.The values stated in each system may not be
D2216 Test Methods for Laboratory Determination of Water
exact equivalents; therefore, each system shall be used inde-
(Moisture) Content of Soil and Rock by Mass
pendentlyoftheother.Combiningvaluesfromthetwosystems
D3740 Practice for Minimum Requirements for Agencies
may result in non-conformance with the standard.
Engaged in Testing and/or Inspection of Soil and Rock as
1.4 All observed and calculated values shall conform to the
Used in Engineering Design and Construction
guidelines for significant digits and rounding established in
D4753 Guide for Evaluating, Selecting, and Specifying Bal-
Practice D6026, unless superseded by this standard.
ances and Standard Masses for Use in Soil, Rock, and
1.4.1 For purposes of comparing measured or calculated
Construction Materials Testing
value(s) with specified limits, the measured or calculated
D4992 Practice for Evaluation of Rock to be Used for
Erosion Control
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD18onSoiland
Rock and is the direct responsibility of Subcommittee D18.17 on Rock for Erosion
2
Control. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved July 1, 2012. Published November 2012. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1992. Last previous edition approved in 2004 as D5240 – 04. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D5240_D5240M-12. the ASTM website.
*A Summary of Changes section appears
...

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