ASTM D3681-12
(Test Method)Standard Test Method for Chemical Resistance of “Fiberglass” (Glass–Fiber–Reinforced Thermosetting-Resin) Pipe in a Deflected Condition
Standard Test Method for Chemical Resistance of “Fiberglass” (Glass–Fiber–Reinforced Thermosetting-Resin) Pipe in a Deflected Condition
SIGNIFICANCE AND USE
This test method evaluates the effect of a chemical environment on pipe when in a deflected condition. It has been found that effects of chemical environments can be accelerated by strain induced by deflection. This information is useful and necessary for the design and application of buried fiberglass pipe.
Note 4—Pipe of the same diameter but of different wall thicknesses will develop different strains with the same deflection. Also, pipes having the same wall thickness but different constructions making up the wall may develop different strains with the same deflection.
SCOPE
1.1 This test method covers the procedure for determining the chemical-resistant properties of fiberglass pipe in a deflected condition for diameters 4 in. (102 mm) and larger. Both glass–fiber–reinforced thermosetting resin pipe (RTRP) and glass–fiber–reinforced polymer mortar pipe (RPMP) are fiberglass pipes.
Note 1—For the purposes for this standard, polymer does not include natural polymers.
1.2 Inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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. Specific precautionary statements are given in 9.5.
Note 2—There is no known ISO equivalent to this standard.
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Designation: D3681 − 12 AnAmerican National Standard
Standard Test Method for
Chemical Resistance of “Fiberglass”
(Glass–Fiber–Reinforced Thermosetting-Resin) Pipe in a
1
Deflected Condition
This standard is issued under the fixed designation D3681; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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 covers the procedure for determining
3.1 Definitions:
the chemical-resistant properties of fiberglass pipe in a de-
3.1.1 General—Definitions are in accordance with Termi-
flectedconditionfordiameters4in.(102mm)andlarger.Both
nology D883 and abbreviations are in accordance with Termi-
glass–fiber–reinforced thermosetting resin pipe (RTRP) and
nology D1600 unless otherwise indicated.
glass–fiber–reinforced polymer mortar pipe (RPMP) are fiber-
3.2 Definitions of Terms Specific to This Standard:
glass pipes.
3.2.1 end point—the passage of the fluid through the pipe
NOTE 1—For the purposes for this standard, polymer does not include
wall unless otherwise stated. The failure mode may be
natural polymers.
catastrophic, characterized by a sudden fracture through the
1.2 Inch-poundunitsaretoberegardedasthestandard.The
pipewallintheareaofgreateststrain,paralleltotheaxisofthe
values given in parentheses are for information only.
pipe,withthefiberreinforcementcleanlybrokenattheedgeof
the fracture. Visual evidence of surface etching or pitting may
1.3 This standard does not purport to address all of the
or may not be present.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3.2.2 fiberglass pipe—tubular product containing glass fiber
priate safety and health practices and determine the applica-
reinforcements embedded in or surrounded by cured thermo-
bility of regulatory limitations prior to use. Specific precau-
setting resin. The composite structure may contain aggregate,
tionary statements are given in 9.5.
granular or platelet fillers, thixotropic agents, pigments, or
dyes.Thermoplasticorthermosettinglinersorcoatingsmaybe
NOTE 2—There is no known ISO equivalent to this standard.
included.
2. Referenced Documents
3.2.3 reinforced polymer mortar pipe (RPMP)—fiberglass
2
2.1 ASTM Standards:
pipe with aggregate.
D883Terminology Relating to Plastics
3.2.4 reinforced thermosetting resin pipe (RTRP)—
D1600TerminologyforAbbreviatedTermsRelatingtoPlas-
fiberglass pipe without aggregate.
tics
D3567PracticeforDeterminingDimensionsof“Fiberglass”
3.2.5 strain-corrosion—the failure of the pipe wall caused
(Glass-Fiber-Reinforced Thermosetting Resin) Pipe and
by the exposure of the inside surface, while in a strained
Fittings
condition, to a corrosive environment for a period of time.
2.2 ISO Standard:
3
3 Preferred Numbers—Series of Preferred Numbers
4. Summary of Test Method
4.1 This test method consists of exposing the interior of a
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD20onPlastics
minimum of 18 specimens of pipe to a corrosive test solution
and is the direct responsibility of Subcommittee D20.23 on Reinforced Plastic
whilethepipeisconstantlymaintainedinadeflectedcondition
Piping Systems and Chemical Equipment.
at differing induced initial ring flexural strain levels, and
Current edition approved April 1, 2012. Published May 2012. Originally
approved in 1978. Last previous edition approved in 2006 as D3681–06. DOI: measuring the time to failure for each strain level. Test
10.1520/D3681-12.
temperatures are obtained by testing in an air environment
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
where the temperature is controlled.
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
4.2 The long-term resistance of the pipe to the test solution
the ASTM website.
3
is obtained by an extrapolation to 50 years of a log-log linear
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org. regression line for initial strain level versus time.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D3681 − 12
NOTE 3—It is the consensus of Subcommittee D20.23 that the log–log
8. Test Conditions
linear regression analysis of test data is a conservative approach and is
8.1 The standard temperature shall be 73.4 6 3.6°F (23 6
representative of sta
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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.
An American National Standard
Designation:D3681–06 Designation: D3681 – 12
Standard Test Method for
Chemical Resistance of “Fiberglass”
(Glass–Fiber–Reinforced Thermosetting-Resin) Pipe in a
1
Deflected Condition
This standard is issued under the fixed designation D3681; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This test method covers the procedure for determining the chemical-resistant properties of fiberglass pipe in a deflected
condition for diameters 4 in. (102 mm) and larger. Both glass–fiber–reinforced thermosetting resin pipe (RTRP) and
glass–fiber–reinforced polymer mortar pipe (RPMP) are fiberglass pipes.
NOTE 1—For the purposes for this standard, polymer does not include natural polymers.
1.2 Inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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. Specific precautionary statements are given in 9.5.
NOTE2—There is no similar or equivalent ISO standard. 2—There is no known ISO equivalent to this standard.
2. Referenced Documents
2
2.1 ASTM Standards:
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
D3567 Practice for Determining Dimensions of Fiberglass (Glass-Fiber-Reinforced Thermosetting Resin) Pipe and Fittings
2.2 ISO Standard:
3
3 Preferred Numbers—Series of Preferred Numbers
3. Terminology
3.1Definitions:
3.1 Definitions:
3.1.1 General—Definitions are in accordance with Terminology D883 and abbreviations are in accordance with Terminology
D1600 unless otherwise indicated.
3.2 Definitions of Terms Specific to This Standard: Descriptions of Terms Specific to This Standard:
3.2.1 end point
3.2.1 end point—the passage of the fluid through the pipe wall unless otherwise stated. The failure mode may be catastrophic,
characterizedbyasuddenfracturethroughthepipewallintheareaofgreateststrain,paralleltotheaxisofthepipe,withthefiber
reinforcement cleanly broken at the edge of the fracture. Visual evidence of surface etching or pitting may or may not be present.
3.2.2 fiberglass pipe
3.2.2 fiberglass pipe—tubularproductcontainingglassfiberreinforcementsembeddedinorsurroundedbycuredthermosetting
resin. The composite structure may contain aggregate, granular or platelet fillers, thixotropic agents, pigments, or dyes.
Thermoplastic or thermosetting liners or coatings may be included.
3.2.3 reinforced polymer mortar pipe (RPMP)—fiberglass pipe with aggregate.
1
This test method is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.23 on Reinforced Plastic Piping
Systems and Chemical Equipment.
´1
Current edition approved Oct. 15, 2006. Published November 2006. Originally approved in 1978. Last previous edition approved in 2001 as D3681–01 . DOI:
10.1520/D3681-06.
Current edition approved April 1, 2012. Published May 2012. Originally approved in 1978. Last previous edition approved in 2006 as D3681–06. DOI:
10.1520/D3681-12.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D3681 – 12
3.2.4 reinforced thermosetting resin pipe (RTRP)—fiberglass pipe without aggregate.
3.2.5 strain-corrosion—the failure of the pipe wall caused by the exposure of the inside surface, while in a strained condition,
to a corrosive environment for a period of time.
4. Summary of Test Method
4.1 This test method consists of exposing the interior of a minimum of 18 specimens of pipe to a corrosive test solution while
the pipe is constantly maintained in a deflected conditi
...
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