ASTM C1560-03(2009)

Standard Test Method for Hot Water Accelerated Aging of Glass-Fiber Reinforced Cement-Based Composites

SIGNIFICANCE AND USE
The basis for this test as an indicator of the long term behavior of fiber reinforced composites is that elevated temperature and moisture content accelerate the formation of the products of hydration of the cement in the matrix, particularly calcium hydroxide.
It is known that the interaction of these products of hydration, particularly calcium hydroxide, with the fibers can have a major effect on the long-term properties of the composites.
The principal mechanism that occurs is that the calcium hydroxide forms within the bundles of filaments that form the glass fiber strand. This gradually bonds the filaments together, which reduces filament pull-out. This causes a reduction in the strain capacity of the composite, thereby reducing the strength of the composite and changing the composite from a ductile material to an increasingly brittle material.
Accelerating the formation of the hydration products accelerates their interaction with the fibers, hence accelerating the aging of the composite.
The data developed from this test are used by researchers and manufacturers to evaluate the long-term performance of different mixtures, reinforcements, mixture components, and to provide data for the development of design procedures for products made from these composites.
The recorded data also provides screening information as new matrices and reinforcements are developed.
The usefulness of the test as an indicator of long term composite performance is valid if the only reactions that are accelerated are those that occur more slowly under natural weathering, hot water can induce effects in some composites, for instance those containing acrylic polymer, that may not occur in natural weathering. This test method may not be a valid indicator of long-term performance of such composites.
SCOPE
1.1 This test method provides a way of accelerating the aging of glass fiber reinforced cementitious composites in order to develop data that will indicate real-life natural weathering performance.
1.2 The coupons prepared for this test method will be tested using Test Method C 947.
1.3 This test method can be used to age coupons for other test methods.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 30-Apr-2009
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C27 - Precast Concrete Products
• Drafting Committee: C27.40 - Glass Fiber Reinforced Concrete

Relations

• Replaces: ASTM C1560-03 - Standard Test Method for Hot Water Accelerated Aging of Glass-Fiber Reinforced Cement-Based Composites
• Effective Date: 01-May-2009

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C1560 − 03(Reapproved 2009)
Standard Test Method for
Hot Water Accelerated Aging of Glass-Fiber Reinforced
1
Cement-Based Composites
This standard is issued under the fixed designation C1560; 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 perature and moisture content accelerate the formation of the
products of hydration of the cement in the matrix, particularly
1.1 This test method provides a way of accelerating the
calcium hydroxide.
aging of glass fiber reinforced cementitious composites in
3.1.1 It is known that the interaction of these products of
order to develop data that will indicate real-life natural
hydration, particularly calcium hydroxide, with the fibers can
weathering performance.
have a major effect on the long-term properties of the compos-
1.2 The coupons prepared for this test method will be tested
ites.
using Test Method C947.
3.1.2 The principal mechanism that occurs is that the
1.3 This test method can be used to age coupons for other
calcium hydroxide forms within the bundles of filaments that
test methods.
form the glass fiber strand. This gradually bonds the filaments
together, which reduces filament pull-out. This causes a reduc-
1.4 The values stated in inch-pound units are to be regarded
tion in the strain capacity of the composite, thereby reducing
as standard. The values given in parentheses are mathematical
the strength of the composite and changing the composite from
conversions to SI units that are provided for information only
a ductile material to an increasingly brittle material.
and are not considered standard.
3.1.3 Accelerating the formation of the hydration products
1.5 This standard does not purport to address all of the
accelerates their interaction with the fibers, hence accelerating
safety concerns, if any, associated with its use. It is the
the aging of the composite.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
3.2 The data developed from this test are used by research-
bility of regulatory limitations prior to use. ers and manufacturers to evaluate the long-term performance
ofdifferentmixtures,reinforcements,mixturecomponents,and
2. Referenced Documents to provide data for the development of design procedures for
2
products made from these composites.
2.1 ASTM Standards:
3.2.1 The recorded data also provides screening information
C947 Test Method for Flexural Properties of Thin-Section
as new matrices and reinforcements are developed.
Glass-Fiber-Reinforced Concrete (Using Simple Beam
With Third-Point Loading)
3.3 The usefulness of the test as an indicator of long term
C1228 Practice for Preparing Coupons for Flexural and
composite performance is valid if the only reactions that are
Washout Tests on Glass Fiber Reinforced Concrete
accelerated are those that occur more slowly under natural
weathering, hot water can induce effects in some composites,
3. Significance and Use
for instance those containing acrylic polymer, that may not
occur in natural weathering. This test method may not be a
3.1 The basis for this test as an indicator of the long term
valid indicator of long-term performance of such composites.
behavior of fiber reinforced composites is that elevated tem-
4. Apparatus
1
This test method is under the jurisdiction ofASTM Committee C27 on Precast 4.1 Aging Tanks—Tank material can be but not limited to,
Concrete Products and is the direct responsibility of Subcommittee C27.40 on Glass
plastic, insulated to maintain a stable temperature. Insulation
Fiber Reinforced Concrete.
should cover all exterior surfaces including the cover. Insula-
Current edition approved May 1, 2009. Published May 2009. Originally
tion can be a foam product as used in building construction.
approved in 2003. Last previous edition approved in 2003 as C1560 – 03. DOI:
10.1520/C1560-03R09.
4.1.1 The size of the tank is typically 12 in. deep (300 mm),
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
18 in. wide (450 mm), and 20 to 36 in. (600 to 900 mm), in
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
length. Size is determined by the amount of coupons to be
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. processed and the ability to maintain stable temperatures.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1560 − 03 (2009)
Water temperature in sev
...