ASTM D2924-01
(Test Method)Standard Test Method for External Pressure Resistance of "Fiberglass" (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe
Standard Test Method for External Pressure Resistance of "Fiberglass" (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe
SCOPE
1.1 This test method covers determination of the resistance of fiberglass pipe to external pressure. It classifies failures as buckling, compressive, and leaking. Both glass-fiber-reinforced thermosetting-resin pipe (RTRP) and glass-fiber-reinforced plastic mortar pipe (RPMP) are fiberglass pipes.
Note 1—For the purposes of this standard, polymer does not include natural polymers.
1.2 The values stated in inch-pound units are to be regarded as standard. The SI units given in parentheses are for information only. Note 1—There is no similar or equivalent ISO standard.
1.3 This standard does not purport to address all of he safety problems, 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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An American National Standard
Designation:D 2924–01
Standard Test Method for
External Pressure Resistance of “Fiberglass”
1
(Glass-Fiber-Reinforced Thermosetting-Resin) Pipe
This standard is issued under the fixed designation D 2924; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* 3.2 Definitions of Terms Specific to This Standard:
3.2.1 aggregate, n—a siliceous sand conforming to the
1.1 This test method covers determination of the resistance
requirements of Specification C33, except that the require-
of fiberglass pipe to external pressure. It classifies failures as
ments for gradation shall not apply.
buckling, compressive, and leaking. Both glass-fiber-
3.2.2 buckling failure pressure— the external gage pressure
reinforced thermosetting-resin pipe (RTRP) and glass-fiber-
at which buckling occurs. Buckling is characterized by a sharp
reinforced polymer mortar pipe (RPMP) are fiberglass pipes.
discontinuity in the pressure-volume change graph and subse-
NOTE 1—For the purposes of this standard, polymer does not include
quent fracture in the test specimen appearing as an axially
natural polymers.
oriented crack. Buckling is an elastic instability type of failure
1.2 The values stated in inch-pound units are to be regarded
and is normally associated with thin-wall pipe.
as standard. The SI units given in parentheses are for informa-
3.2.3 compressive failure pressure—the maximum external
tion only.
gage pressure that the specimen will resist without transmis-
sion of the testing fluid through the wall. Compressive failure
NOTE 2—There is no similar or equivalent ISO standard.
pressure will not be associated with a sharp discontinuity in the
1.3 This standard does not purport to address all of the
pressure-volume change graph nor lead to a fracture appearing
safety concerns, if any, associated with its use. It is the
as a sharp axially oriented crack. It will appear as a fracture
responsibility of the user of this standard to establish appro-
which is the result of reaching the compressive strength limits
priate safety and health practices and determine the applica-
of the material and is normally associated with thick-wall pipe.
bility of regulatory limitations prior to use.
Failure is usually identified by a sudden drop in pressure.
3.2.4 fiberglass pipe, n—a tubular product containing glass
2. Referenced Documents
fiber reinforcements embedded in or surrounded by cured
2.1 ASTM Standards:
thermosetting resin; the composite structure may contain
2
C33 Specification for Concrete Aggregates
aggregate, granular, or platelet fillers, thixotropic agents, pig-
3
D 618 Practice for Conditioning Plastics for Testing
ments, or dyes; thermoplastic or thermosetting liners or coat-
3
D 883 Terminology Relating to Plastics
ings may be included.
D 1600 Terminology for Abbreviated Terms Relating to
3.2.5 leaking pressure—the external gage pressure at which
3
Plastics
the test fluid is transmitted through the pipe wall. It is
4
F 412 Terminology Relating to Plastic Piping Systems
characterized in this test by continuous volume change indica-
tions with no pressure increase.
3. Terminology
3.2.6 reinforced polymer mortar pipe (RPMP), n—a fiber-
3.1 Definitions:
glass pipe with aggregate.
3.1.1 Definitions are in accordance withTerminology D 883
3.2.7 reinforced thermosetting resin pipe (RTRP), n—a
orF 412andabbreviationsareinaccordancewithTerminology
fiberglass pipe without aggregate.
D 1600, unless otherwise indicated.
4. Summary of Test Method
1 4.1 This test method consists of loading a specimen to
ThistestmethodisunderthejurisdictionofASTMCommitteeD20onPlastics,
and is the direct responsibility of Subcommittee D20.23 on Reinforced Plastic failure in a short time interval by means of continuously
Piping Systems and Chemical Equipment.
increasing external fluid pressure at a controlled constant
Current edition approved June 10, 2001. Published August 2001. Originally
temperature. Fluid is also maintained inside the pipe, and
published as D 2924 – 70. Last previous edition D 2924 – 99.
2
changes in the inside volume are monitored with a bleed hole
Annual Book of ASTM Standards, Vol 04.02.
3
Annual Book of ASTM Standards, Vol 08.01. and fluid level tube. On Cartesian coordinates, pressure versus
4
Annual Book of ASTM Standards, Vol 08.04.
*A Summary of Changes section appears at the end of this standard.
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