ASTM D3201/D3201M-13
(Test Method)Standard Test Method for Hygroscopic Properties of Fire-Retardant Wood and Wood-Based Products
Standard Test Method for Hygroscopic Properties of Fire-Retardant Wood and Wood-Based Products
SIGNIFICANCE AND USE
4.1 The hygroscopic properties of wood and wood-based products treated with fire-retardant chemicals are often greater than for untreated products. This is particularly true at the higher relative humidity conditions. This higher hygroscopicity sometimes is the cause for staining, decay, poor paint adhesion, and migration and exuding of chemicals and moisture at the high humidities. Corrosion of metal fasteners sometimes also occurs.
4.2 The results obtained with this standard are important in identifying treatments with low hygroscopic properties.
4.3 Results can be useful in determining exposure limitations in service for specific treated products.
4.4 Building codes and other specifications for fire-retardant-treated wood for interior use include requirements based on this test method.
SCOPE
1.1 This test method prescribes the procedure for determining the hygroscopicity of fire retardant treated wood products by determining the moisture content of fire-retardant-treated wood and wood-based product specimens after exposure to a test condition of 92 ± 2 % relative humidity at 81 ± 4°F [27 ± 2°C].
1.2 The text of this test method references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this test method.
1.3 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 non-conformance with the standard.
1.4 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.
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Designation: D3201/D3201M − 13
Standard Test Method for
Hygroscopic Properties of Fire-Retardant Wood and Wood-
1
Based Products
This standard is issued under the fixed designation D3201/D3201M; 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 3. Terminology
1.1 This test method prescribes the procedure for determin-
3.1 Definitions—Definitions used in this practice are in
ing the hygroscopicity of fire retardant treated wood products accordance with Terminologies D9 and E176.
by determining the moisture content of fire-retardant-treated
wood and wood-based product specimens after exposure to a
4. Significance and Use
testconditionof92 62%relativehumidityat81 64°F[27 6
4.1 The hygroscopic properties of wood and wood-based
2°C].
products treated with fire-retardant chemicals are often greater
1.2 The text of this test method references notes and
than for untreated products. This is particularly true at the
footnotes which provide explanatory material.These notes and
higherrelativehumidityconditions.Thishigherhygroscopicity
footnotes (excluding those in tables and figures) shall not be
sometimesisthecauseforstaining,decay,poorpaintadhesion,
considered as requirements of this test method.
and migration and exuding of chemicals and moisture at the
high humidities. Corrosion of metal fasteners sometimes also
1.3 The values stated in either SI units or inch-pound units
occurs.
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
4.2 The results obtained with this standard are important in
system shall be used independently of the other. Combining
identifying treatments with low hygroscopic properties.
values from the two systems may result in non-conformance
4.3 Results can be useful in determining exposure limita-
with the standard.
tions in service for specific treated products.
1.4 This standard does not purport to address all of the
4.4 Building codes and other specifications for fire-
safety concerns, if any, associated with its use. It is the
retardant-treated wood for interior use include requirements
responsibility of the user of this standard to establish appro-
based on this test method.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Apparatus
2. Referenced Documents
5.1 Conditioning chamber with air circulation and capable
2
of being maintained at 81 6 4°F [27 6 2°C] and a relative
2.1 ASTM Standards:
humidity of 92 62%.
D9Terminology Relating to Wood and Wood-Based Prod-
ucts
5.2 Oven, air-circulated and vented, capable of maintaining
E84Test Method for Surface Burning Characteristics of
a temperature of 217 6 4°F [103 6 2°C].
Building Materials
5.3 Weighing Scale—A scale or balance that will weigh a
E176Terminology of Fire Standards
specimen within an accuracy of 60.2%.
E2768Test Method for Extended Duration Surface Burning
CharacteristicsofBuildingMaterials(30minTunnelTest)
6. Test Specimens
6.1 Aminimumoffivespecimensshallbeselectedfromthe
1
This test method is under the jurisdiction of ASTM Committee D07 on Wood
untreated product/species combination that is to be tested.
and is the direct responsibility of Subcommittee D07.07 on Fire Performance of
Wood.
Solid wood specimens with identifiable sapwood shall be
Current edition approved June 15, 2013. Published July 2013. Originally
selectedwithasmuchsapwoodascanbereadilyobtainedfrom
ε1
approved in 1973. Last previous edition approved in 2008 as D3201–08 . DOI:
the lot of material from which it is selected.
10.1520/D3201-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.2 Specimen Size:
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.2.1 Solid wood specimens shall be cross sections cut
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. fromsolidsawn,surfacedlumberofnominal2×6size.Thetest
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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---------------------- Page: 1 ----------------------
D3201/D3201M − 13
specimens shall be 1.0 6 0.1 in. [25 6 3 mm] along the grain 7.4 Weigh each specimen to obtain weight prior to high
by 5.5 6 0.1 in. [139 6 3 mm] wide by 1.5 6 0.1 in. [38 6 humidity exposure.
3 mm] deep.
7.5 Expose all specimens under constant humidity condi-
6.2.2 Panelproductspecimensshallbecutfrompanelswith
tionsof92 62%at81 64°F[27 62°C]fornotlessthan168
a nominal thickness between 15/32 in. [12 mm] and 5/8 in. [16
ormorethan180hour
...
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.
´1
Designation: D3201 − 08a D3201/D3201M − 13
Standard Test Method for
Hygroscopic Properties of Fire-Retardant Wood and Wood-
1
Based Products
This standard is issued under the fixed designation D3201;D3201/D3201M; 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
ε NOTE—Note 2 was editorially added in October 2009.
1. Scope
1.1 This test method prescribes the procedure for determining the hygroscopicity of fire retardant treated wood products by
determining the moisture content of fire-retardant-treated wood and wood-based product samplesspecimens after exposure to a
standard high relative humidity test condition of 92 6 2 % at 27 6 2°C (81 6 4°F).relative humidity at 81 6 4°F [27 6 2°C].
1.2 The text of this test method references notes and footnotes which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of this test method.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as the standard. The inch-pound values
given in parentheses are for information only and are not considered 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 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D9 Terminology Relating to Wood and Wood-Based Products
E84 Test Method for Surface Burning Characteristics of Building Materials
E176 Terminology of Fire Standards
E2768 Test Method for Extended Duration Surface Burning Characteristics of Building Materials (30 min Tunnel Test)
3. Terminology
3.1 Definitions—Definitions used in this practice are in accordance with Terminologies D9 and E176.
4. Significance and Use
4.1 The hygroscopic properties of wood and wood-based products treated with fire-retardant chemicals are often greater than
for untreated products. This is particularly true at the higher relative humidity conditions. This higher hygroscopicity sometimes
is the cause for staining, decay, poor paint adhesion, and migration and exuding of chemicals and moisture at the high humidities.
Corrosion of metal fasteners sometimes also occurs.
4.2 The results obtained with this standard are important in identifying treatments with low hygroscopic properties.
4.3 Results can be useful in determining exposure limitations in service for specific treated products.
4.4 Building codes and other specifications for fire-retardant-treated wood for interior use include requirements based on this
test method.
1
This test method is under the jurisdiction of ASTM Committee D07 on Wood and is the direct responsibility of Subcommittee D07.07 on Fire Performance of Wood.
Current edition approved Nov. 1, 2008June 15, 2013. Published December 2008July 2013. Originally approved in 1973. Last previous edition approved in 2008 as
ε1
D3201 – 08.D3201 – 08 . DOI: 10.1520/D3201-08AE01.10.1520/D3201-13.
2
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D3201/D3201M − 13
5. Apparatus
5.1 Conditioning chamber with air circulation and capable of being maintained at 2781 6 2°C (814°F [27 6 4°F)2°C] and a
relative humidity of 92 6 2 %.
5.2 Oven, air-circulated and vented, capable of maintaining a temperature of 103217 6 2°C (2174°F [103 6 4°F).2°C].
5.3 Weighing Scale—A scale or balance that will weigh a specimen within an accuracy of 60.2 %.
6. Test Specimens
6.1 A minimum of five specimens shall be selected that represent the lot. Unless otherwise specified, specimens shall be full
cross sections, no less than 25.4 mm (1 in.) along the grain, but longer as needed to pr
...
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