ASTM C1560-03(2023)

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

SIGNIFICANCE AND USE
3.1 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.  
3.1.1 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.  
3.1.2 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.  
3.1.3 Accelerating the formation of the hydration products accelerates their interaction with the fibers, hence accelerating the aging of the composite.  
3.2 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.  
3.2.1 The recorded data also provides screening information as new matrices and reinforcements are developed.  
3.3 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 C947.  
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, 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-2023
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C27 - Precast Concrete Products
• Drafting Committee: C27.40 - Glass Fiber Reinforced Concrete

Relations

• Refers: ASTM C1228-96(2009) - Standard Practice for Preparing Coupons for Flexural and Washout Tests on Glass Fiber Reinforced Concrete
• Effective Date: 01-May-2009
• Refers: ASTM C947-03(2009) - Standard Test Method for Flexural Properties of Thin-Section Glass-Fiber-Reinforced Concrete (Using Simple Beam With Third-Point Loading)
• Effective Date: 01-May-2009
• Refers: ASTM C1228-96(2004) - Standard Practice for Preparing Coupons for Flexural and Washout Tests on Glass Fiber Reinforced Concrete
• Effective Date: 01-Dec-2004
• Refers: ASTM C947-03 - Standard Test Method for Flexural Properties of Thin-Section Glass-Fiber-Reinforced Concrete (Using Simple Beam With Third-Point Loading)
• Effective Date: 10-Jun-2003
• Refers: ASTM C947-99 - Standard Test Method for Flexural Properties of Thin-Section Glass-Fiber-Reinforced Concrete (Using Simple Beam With Third-Point Loading)
• Effective Date: 10-Jan-1999
• Refers: ASTM C1228-96 - Standard Practice for Preparing Coupons for Flexural and Washout Tests on Glass Fiber Reinforced Concrete
• Effective Date: 01-Jan-1996

Standards Content (Sample)

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: C1560 − 03 (Reapproved 2023)
Standard Test Method for
Hot Water Accelerated Aging of Glass-Fiber Reinforced
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 Washout Tests on Glass Fiber Reinforced Concrete
1.1 This test method provides a way of accelerating the
3. Significance and Use
aging of glass fiber reinforced cementitious composites in
3.1 The basis for this test as an indicator of the long term
order to develop data that will indicate real-life natural
behavior of fiber reinforced composites is that elevated tem-
weathering performance.
perature and moisture content accelerate the formation of the
1.2 The coupons prepared for this test method will be tested
products of hydration of the cement in the matrix, particularly
using Test Method C947.
calcium hydroxide.
1.3 This test method can be used to age coupons for other
3.1.1 It is known that the interaction of these products of
test methods.
hydration, particularly calcium hydroxide, with the fibers can
have a major effect on the long-term properties of the compos-
1.4 The values stated in inch-pound units are to be regarded
ites.
as standard. The values given in parentheses are mathematical
3.1.2 The principal mechanism that occurs is that the
conversions to SI units that are provided for information only
calcium hydroxide forms within the bundles of filaments that
and are not considered standard.
form the glass fiber strand. This gradually bonds the filaments
1.5 This standard does not purport to address all of the
together, which reduces filament pull-out. This causes a reduc-
safety concerns, if any, associated with its use. It is the
tion in the strain capacity of the composite, thereby reducing
responsibility of the user of this standard to establish appro-
the strength of the composite and changing the composite from
priate safety, health, and environmental practices and deter-
a ductile material to an increasingly brittle material.
mine the applicability of regulatory limitations prior to use.
3.1.3 Accelerating the formation of the hydration products
1.6 This international standard was developed in accor-
accelerates their interaction with the fibers, hence accelerating
dance with internationally recognized principles on standard-
the aging of the composite.
ization established in the Decision on Principles for the
3.2 The data developed from this test are used by research-
Development of International Standards, Guides and Recom-
ers and manufacturers to evaluate the long-term performance
mendations issued by the World Trade Organization Technical
of different mixtures, reinforcements, mixture components, and
Barriers to Trade (TBT) Committee.
to provide data for the development of design procedures for
products made from these composites.
2. Referenced Documents
3.2.1 The recorded data also provides screening information
2.1 ASTM Standards:
as new matrices and reinforcements are developed.
C947 Test Method for Flexural Properties of Thin-Section
3.3 The usefulness of the test as an indicator of long term
Glass-Fiber-Reinforced Concrete (Using Simple Beam
composite performance is valid if the only reactions that are
With Third-Point Loading)
accelerated are those that occur more slowly under natural
C1228 Practice for Preparing Coupons for Flexural and
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
This test method is under the jurisdiction of ASTM Committee C27 on Precast
Concrete Products and is the direct responsibility of Subcommittee C27.40 on Glass
valid indicator of long-term performance of such composites.
Fiber Reinforced Concrete.
Current edition approved May 1, 2023. Published May 2023. Originally
4. Apparatus
approved in 2003. Last previous edition approved in 2016 as C1560 – 03(2016).
DOI: 10.1520/C1560-03R23.
4.1 Aging Tanks—Tank material can be but not limited to,
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
plastic, insulated to maintain a stable temperature. Insulation
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
should cover all exterior surfaces including the cover. Insula-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. tion can be a foam product as used in building construction.
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C1560 − 03 (2023)
4.1.1 The size of the tank is typically 12 in. deep (300 mm), than a 5 % decrease in the flexural ultimate and/or a decrease
18 in. wide (450 mm), and 20 to 36 in. (600 to 900 mm), in of strain capacity of less than 10 %.
length. Size is determ
...