Standard Test Method for Measuring Waste Glass or Glass Ceramic Durability by Vapor Hydration Test

SIGNIFICANCE AND USE
The vapor hydration test can be used to study the corrosion of glass and glass ceramic waste forms under conditions of high temperature and contact by water vapor or thin films of water. This method may serve as an accelerated test for some materials, since the high temperatures will accelerate thermally activated processes. A wide range of test temperatures have been reported in the literature –40°C (Ebert et al, 2005 (3), for example) to 300°C (Vienna et al, 2001 (4), for example). It should be noted that with increased test temperature comes the possibility of changing the corrosion rate determining mechanism and the types of phases formed upon alteration from those that occur in the disposal environment (Vienna et al, 2001 (4)).
The vapor hydration test can be used as a screening test to determine the propensity of waste forms to alter and for relative comparisons in alteration rates between waste forms.
SCOPE
1.1 The vapor hydration test method can be used to study the corrosion of a waste forms such as glasses and glass ceramics upon exposure to water vapor at elevated temperatures. In addition, the alteration phases that form can be used as indicators of those phases that may form under repository conditions. These tests; which allow altering of glass at high surface area to solution volume ratio; provide useful information regarding the alteration phases that are formed, the disposition of radioactive and hazardous components, and the alteration kinetics under the specific test conditions. This information may be used in performance assessment (McGrail et al, 2002 (1) for example).
1.2 This test method must be performed in accordance with all quality assurance requirements for acceptance of the data.
1.3 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.

General Information

Status
Historical
Publication Date
31-May-2009
Current Stage
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ASTM C1663-09 - Standard Test Method for Measuring Waste Glass or Glass Ceramic Durability by Vapor Hydration Test
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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: C1663 − 09
Standard Test Method for
Measuring Waste Glass or Glass Ceramic Durability by
1
Vapor Hydration Test
This standard is issued under the fixed designation C1663; 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 ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to
1.1 The vapor hydration test method can be used to study
Determine the Precision of a Test Method
the corrosion of a waste forms such as glasses and glass
2
ceramics upon exposure to water vapor at elevated tempera-
3. Terminology
tures.Inaddition,thealterationphasesthatformcanbeusedas
indicators of those phases that may form under repository
3.1 Definitions:
conditions. These tests; which allow altering of glass at high
3.1.1 alteration layer—a layer of alteration products at the
surface area to solution volume ratio; provide useful informa-
surface of specimen. Several distinct layers may form at the
tion regarding the alteration phases that are formed, the surface and within cracks in the glass. Layers may be com-
disposition of radioactive and hazardous components, and the
prisedofdiscretecrystallites.Thethicknessoftheselayersmay
alteration kinetics under the specific test conditions. This be used to estimate the amount of glass altered.
information may be used in performance assessment (McGrail
3.1.2 alteration products—crystalline or amorphous phases
3
et al, 2002 (1) for example).
formed as a result of glass interaction with an aqueous
1.2 This test method must be performed in accordance with environment by precipitation from solution or by in situ
all quality assurance requirements for acceptance of the data. transformation of the chemically altered solid.
1.3 This standard does not purport to address all of the 3.1.3 glass—an inorganic product of fusion that has cooled
safety concerns, if any, associated with its use. It is the to a rigid condition without crystallizing. C162
responsibility of the user of this standard to establish appro-
3.1.4 glass ceramic—solid material, partly crystalline and
priate safety and health practices and determine the applica-
partly glassy, formed by the controlled crystallization of a
bility of regulatory limitations prior to use.
glass. C162
3.1.5 glasstransitiontemperature—onheating,thetempera-
2. Referenced Documents
tureatwhichaglasstransformsfromanelastictoaviscoelastic
4
2.1 ASTM Standards:
material, characterized by the onset of a rapid change in
C162 Terminology of Glass and Glass Products
thermal expansivity. C162
D1125 Test Methods for Electrical Conductivity and Resis-
3.1.6 immobilized low-activity waste—vitrified low-activity
tivity of Water
fraction of waste presently contained in Hanford Site tanks.
D1193 Specification for Reagent Water
D1293 Test Methods for pH of Water
3.1.7 performance assessment—examines the long-term en-
E177 Practice for Use of the Terms Precision and Bias in vironmental and human health effects associated with the
planned disposal of waste. Mann et al, 2001 (2)
3.1.8 sample—initial test material with known composition.
1
This test method is under the jurisdiction ofASTM Committee C26 on Nuclear
Fuel Cycle and is the direct responsibility of Subcommittee C26.13 on Spent Fuel
3.1.9 specimen—specimen is a part of the sample used for
and High Level Waste.
testing.
Current edition approved June 1, 2009. Published July 2009. DOI: 10.1520/
C1663-09.
3.1.10 traceable standard—a material that supplies a link to
2
The precision and bias statements are only valid for glass waste forms at this
known test response in standards international units by a
time. The test may be (and has been) performed on other waste forms; however, the
national or international standards body, for example, NIST.
precision of such tests are currently unknown.
3
The boldface numbers in parentheses refer to the list of references at the end of
3.2 Abbreviations:
this standard.
4 3.2.1 DIW—ASTM Type I deionized water
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3.2.2 EDS—energy dispersive X-ray spectroscopy
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 3.2.3 OM—optical microscopy
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C1663 − 09
3.2.4 OM/IA—optical microscope connected to an image 6.2 Balance(s)—Any calibrated two-point (0.00 grams) bal-
analysis system ance.
3.2.5
...

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