ASTM C1662-2018 Standard Practice for Measurement of the Glass Dissolution Rate Using the Single-Pass Flow-Through Test Method.pdf
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1、Designation: C1662 17C1662 18Standard Practice forMeasurement of the Glass Dissolution Rate Using theSingle-Pass Flow-Through Test Method1This standard is issued under the fixed designation C1662; the number immediately following the designation indicates the year oforiginal adoption or, in the case
2、 of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice describes a single-pass flow-through (SPFT) test method that can be used to me
3、asure the dissolution rate ofa homogeneous silicate glass, including nuclear waste glasses, in various test solutions at temperatures less than 100C. Tests maybe conducted under conditions in which the effects from dissolved species on the dissolution rate are minimized to measure theforward dissolu
4、tion rate at specific values of temperature and pH, or to measure the dependence of the dissolution rate on theconcentrations of various solute species.1.2 Tests are conducted by pumping solutions in either a continuous or pulsed flow mode through a reaction cell that containsthe test specimen. Test
5、s must be conducted at several solution flow rates to evaluate the effect of the flow rate on the glassdissolution rate.1.3 This practice excludes static test methods in which flow is simulated by manually removing solution from the reaction celland replacing it with fresh solution.1.4 Tests may be
6、conducted with demineralized water, chemical solutions (such as pH buffer solutions, simulated groundwatersolutions, and brines), or actual groundwater.1.5 Tests may be conducted with crushed glass of a known size fraction or monolithic specimens having known geometricsurface area. The reacted solid
7、s may be examined to provide additional information regarding the behavior of the material in thetest and the reaction mechanism.1.6 Tests may be conducted with glasses containing radionuclides. However, this test method does not address safety issues forradioactive samples.1.7 Data from these tests
8、 can be used to determine the values of kinetic model parameters needed to calculate the glass corrosionbehavior in a disposal system over long periods (for example, see Practice C1174).1.8 This practice must be performed in accordance with all quality assurance requirements for acceptance of the da
9、ta.1.9 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.10 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establ
10、ish appropriate safety, health, and environmental practices and determine the applicability ofregulatory limitations prior to use.1.11 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for th
11、e Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C92 Test Methods for Sieve Analysis and Water Content of Refractory MaterialsC162 Terminology of Glass and
12、 Glass ProductsC429 Test Method for Sieve Analysis of Raw Materials for Glass Manufacture1 This practice is under the jurisdiction of ASTM Committee C26 on Nuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.13 on Spent Fuel and HighLevel Waste.Current edition approved Nov. 15, 2
13、017Sept. 1, 2018. Published December 2017October 2018. Originally approved in 2007. Last previous edition approved in 20102017as C1662 10.C1662 17. DOI: 10.1520/C1662-17.10.1520/C1662-18.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceas
14、tm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.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. Becau
15、seit 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 versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Ba
16、rr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1C693 Test Method for Density of Glass by BuoyancyC859 Terminology Relating to Nuclear MaterialsC1109 Practice for Analysis of Aqueous Leachates from Nuclear Waste Materials Using Inductively Coupled Plasma-AtomicEmission S
17、pectroscopyC1174 Practice for Evaluation of the Long-Term Behavior of Materials Used in Engineered Barrier Systems (EBS) forGeological Disposal of High-Level Radioactive WasteC1220 Test Method for Static Leaching of Monolithic Waste Forms for Disposal of Radioactive WasteC1285 Test Methods for Deter
18、mining Chemical Durability of Nuclear, Hazardous, and Mixed Waste Glasses and MultiphaseGlass Ceramics: The Product Consistency Test (PCT)C1463 Practices for Dissolving Glass Containing Radioactive and Mixed Waste for Chemical and Radiochemical AnalysisD1129 Terminology Relating to WaterD1193 Specif
19、ication for Reagent WaterD1293 Test Methods for pH of WaterE691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method3. Terminology3.1 Please refer to Terminologies C162 and C859 for additional terminology which may not be listed below.3.2 Definitions:3.2.1 eff
20、luent solution, nthe solution exiting the reaction cell.3.2.2 fines, nsmall pieces of glass that adhere to the glass particles prepared for use in the test that are not removed by sieving.3.2.3 high-purity water, nASTM Type I or Type II water with a maximum total matter content including soluble sil
21、ica of 0.1g/m3 and a minimal electrical resistivity of 16.67 Mcm at 25C (see Specification D1193 and Terminology D1129).3.2.4 influent solution, nthe solution entering the reaction cell.3.2.5 leaching, nthe preferential loss of soluble components from a material.3.2.6 mesh size fraction, na designat
22、ion of the size range of crushed glass given by the combination of the smallest mesh sizethat the glass is passed through (prefixed by a negative sign) and the largest mesh size that it does not pass through (prefixed bya positive sign). For example, the 40 +60 mesh size fraction will pass through a
23、 40 mesh sieve but will not pass through a 60mesh sieve.3.2.7 reaction cell, nthe container in which the sample remains during the test.3.2.8 secondary phase, nany phase that is not present in the glass being tested that is formed in solution or on the surface ofthe sample or apparatus by combinatio
24、n of components released from the glass as it dissolved or present in the test solution.3.2.9 steady-state, adjin this standard, the condition in which the concentration of a dissolved glass component remainsconstant due to the opposing effects of solution flow to remove the components from the vici
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