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ASTM D6817/D6817M-17(2021)

(Specification)

Standard Specification for Rigid Cellular Polystyrene Geofoam

Standard Specification for Rigid Cellular Polystyrene Geofoam

ABSTRACT
This specification presents the types, physical properties, and dimensions of rigid cellular polystyrene (RCPS) intended for use as geofoam. This specification, however, does not address the layout, placement, and workmanship for proper installation and performance of the geofoams. RCPS geofoams shall be formed by the expansion of polystyrene resin beads or granules in a molding process (EPS), or by the expansion of polystyrene base resin in an extrusion process (XPS). They may also be manufactured with reprocessed polystyrene foam (regrind). The RCPS geofoams shall meet combustibility and curing requirements and, when tested, shall adhere to physical property requirements such as dimensions and density, compressive resistance, flexural strength, and oxygen index. Final products should also meet surface damage, volume damage, and UV degradation limits.
SCOPE
1.1 This specification covers the types, physical properties, and dimensions of rigid cellular polystyrene intended for use as geofoam.  
1.2 This specification does not cover the layout, placement, and workmanship for proper installation and performance of rigid cellular polystyrene geofoam.  
1.3 Rigid cellular polystyrene geofoam covered by this specification may need protection from certain chemicals, environmental exposure, and concentrated loads. Additional design considerations may include thermal conductivity and buoyancy. Guidelines regarding these end-use considerations are included in Appendix X1.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
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 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.

General Information

Status
Published
Publication Date
30-Apr-2021
ICS
59.080.70 - Geotextiles
83.100 - Cellular materials
Technical Committee
D35 - Geosynthetics
Drafting Committee
D35.06 - Geosynthetic Specifications
Current Stage
Ref Project

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ASTM D6817/D6817M-17(2021) - Standard Specification for Rigid Cellular Polystyrene GeofoamASTM D6817/D6817M-17(2021) - Standard Specification for Rigid Cellular Polystyrene Geofoam
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ASTM D6817/D6817M-17(2021) - Standard Specification for Rigid Cellular Polystyrene Geofoam
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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:D6817/D6817M −17 (Reapproved 2021)
Standard Specification for
1
Rigid Cellular Polystyrene Geofoam
This standard is issued under the fixed designation D6817/D6817M; 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 C165 Test Method for Measuring Compressive Properties of
Thermal Insulations
1.1 This specification covers the types, physical properties,
C203 Test Methods for Breaking Load and Flexural Proper-
anddimensionsofrigidcellularpolystyreneintendedforuseas
ties of Block-Type Thermal Insulation
geofoam.
C303 Test Method for Dimensions and Density of Pre-
1.2 This specification does not cover the layout, placement,
formed Block and Board–Type Thermal Insulation
and workmanship for proper installation and performance of
C390 Practice for Sampling and Acceptance of Thermal
rigid cellular polystyrene geofoam.
Insulation Lots
1.3 Rigid cellular polystyrene geofoam covered by this
C578 Specification for Rigid, Cellular Polystyrene Thermal
specification may need protection from certain chemicals,
Insulation
environmental exposure, and concentrated loads. Additional
D1621 Test Method for Compressive Properties of Rigid
design considerations may include thermal conductivity and
Cellular Plastics
buoyancy. Guidelines regarding these end-use considerations
D1622/D1622M Test Method forApparent Density of Rigid
are included in Appendix X1.
Cellular Plastics
1.4 The values stated in either SI units or inch-pound units
D2863 Test Method for Measuring the Minimum Oxygen
are to be regarded separately as standard. The values stated in
Concentration to Support Candle-Like Combustion of
each system are not necessarily exact equivalents; therefore, to
Plastics (Oxygen Index)
ensure conformance with the standard, each system shall be
D4439 Terminology for Geosynthetics
used independently of the other, and values from the two
D7557/D7557M Practice for Sampling of Expanded Poly-
systems shall not be combined.
styrene Geofoam Specimens
1.5 This standard does not purport to address all of the
E177 Practice for Use of the Terms Precision and Bias in
safety concerns, if any, associated with its use. It is the
ASTM Test Methods
responsibility of the user of this standard to establish appro-
E691 Practice for Conducting an Interlaboratory Study to
priate safety, health, and environmental practices and deter-
Determine the Precision of a Test Method
mine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accor-
3. Terminology
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 3.1 Definitions:
Development of International Standards, Guides and Recom-
3.1.1 Terms used in this specification are defined in Termi-
mendations issued by the World Trade Organization Technical
nology D4439.
Barriers to Trade (TBT) Committee.
3.1.2 geofoam—block or planar rigid cellular foam poly-
meric material used in geotechnical engineering applications.
2. Referenced Documents
2
2.1 ASTM Standards: 3.2 Definitions of Terms Specific to This Standard:
3.2.1 EPS, XX—number designation for expanded polysty-
3
1
rene geofoam type(s) having a minimum density of XX kg/m
This specification is under the jurisdiction of ASTM Committee D35 on
3
Geosynthetics and is the direct responsibility of Subcommittee D35.06 on Geosyn-
[lb/ft ].
thetic Specifications.
Current edition approved May 1, 2021. Published May 2021. Originally
3.2.2 RCPS—letter designation for EPS and XPS rigid
approved in 2002. Last previous edition approved in 2017 as D6817/D6817M – 17.
cellular polystyrene geofoam covered by this specification.
DOI: 10.1520/D6817_D6817M-17R21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.2.3 XPS, XX—number designation for extruded polysty-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
rene geofoam type(s) having a minimum density of XX kg/m
Standards volume information, refer to the standard’s Document Summary page on
3
the ASTM website. [lb/ft ].
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6817/D6817M−17 (2021)
A
TABLE 1 Physical Property Requirements of RCPS Geofoam
Type EPS12 EPS15 EPS19 EPS22 EPS29 EPS39 EPS46 XPS20 XPS21 XPS26 XPS29 XPS36 XPS48
Density, min., 11.2 14.4 18.4 21.
...

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SIGNIFICANCE AND USE
4.1 Regulatory Requirements—The USA Code of Federal Regulations (10CFR Part 50, Appendix H) requires the implementation of a reactor vessel materials surveillance program for all operating LWRs. Other countries have similar regulations. The purpose of the program is to (1) monitor changes in the fracture toughness properties of ferritic materials in the reactor vessel beltline6 resulting from exposure to neutron irradiation and the thermal environment, and (2) make use of the data obtained from surveillance programs to determine the conditions under which the vessel can be operated with adequate margins of safety throughout its service life. Practice E185, derived mechanical property data, and (r, θ, z) physics-dosimetry data (derived from the calculations and reactor cavity and surveillance capsule measurements (1) using physics-dosimetry standards) can be used together with information in Guide E900 and Refs. 4, 11-18 to provide a relation between property degradation and neutron exposure, commonly called a “trend curve.” To obtain this trend curve at all points in the pressure vessel wall requires that the selected trend curve be used together with the appropriate (r, θ, z) neutron field information derived by use of this guide to accomplish the necessary interpolations and extrapolations in space and time.  
4.2 Neutron Field Characterization—The tasks required to satisfy the second part of the objective of 4.1 are complex and are summarized in Practice E853. In doing this, it is necessary to describe the neutron field at selected (r, θ, z) points within the pressure vessel wall. The description can be either time dependent or time averaged over the reactor service period of interest. This description can best be obtained by combining neutron transport calculations with plant measurements such as reactor cavity (ex-vessel) and surveillance capsule or RPV cladding (in-vessel) measurements, benchmark irradiations of dosimeter sensor materials, and knowledge of th...
SCOPE
1.1 This guide establishes the means and frequency of monitoring the neutron exposure of the LWR reactor pressure vessel throughout its operating life.  
1.2 The physics-dosimetry relationships determined from this guide may be used to estimate reactor pressure vessel damage through the application of Practice E693 and Guide E900, using fast neutron fluence (E > 1.0 MeV and E > 0.1 MeV), displacements per atom (dpa), or damage-function-correlated exposure parameters as independent exposure variables. Supporting the application of these standards are the E853, E944, E1005, and E1018 standards, identified in 2.1.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

  • Guide
    12 pages
    English language
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  • Guide
    12 pages
    English language
    sale 15% off