ASTM C1228-96(2009)
(Practice)Standard Practice for Preparing Coupons for Flexural and Washout Tests on Glass Fiber Reinforced Concrete
Standard Practice for Preparing Coupons for Flexural and Washout Tests on Glass Fiber Reinforced Concrete
SIGNIFICANCE AND USE
Flexural strengths, as determined by Test Method C 947, are used for quality control and design of GFRC products and may be used to verify compliance with specifications and to collect data in research and development programs. It is, therefore, important that coupons be prepared according to a standard practice. The coupons are used to make test specimens for Test Method C 947 and for Test Method C 1229 to determine the amount of glass fiber reinforcement per unit volume of GFRC for quality control purposes.
SCOPE
1.1 This practice covers preparation of test coupons to be used in tests of plant manufactured thin-section glass fiber reinforced concrete (GFRC).
1.2 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.
1.3 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.
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Designation:C1228 −96(Reapproved 2009)
Standard Practice for
Preparing Coupons for Flexural and Washout Tests on
Glass Fiber Reinforced Concrete
This standard is issued under the fixed designation C1228; 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 the amount of glass fiber reinforcement per unit volume of
GFRC for quality control purposes.
1.1 This practice covers preparation of test coupons to be
used in tests of plant manufactured thin-section glass fiber
4. Apparatus
reinforced concrete (GFRC).
4.1 Form—The form shall be rectangular in shape; made
1.2 The values stated in inch-pound units are to be regarded
from wood, fiberglass reinforced plastic (FRP), GFRC, or steel
as standard. The values given in parentheses are mathematical
with dimensions of ⁄2 in. (13 mm) deep by 18 in. (450 mm)
conversions to SI units that are provided for information only
wide and 48 in. (1200 mm) long.
and are not considered standard.
4.2 Steel Trowel, at least 20 in. (500 mm) long.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4.3 Serrated Roller, with handle.
responsibility of the user of this standard to establish appro-
4.4 Strike-Off Bar (screed), at least 20 in. (500 mm) long,
priate safety and health practices and determine the applica-
for leveling and thickness control of specimens.
bility of regulatory limitations prior to use.
5. Sampling
2. Referenced Documents
5.1 Sampling shall be in accordance with governing speci-
2.1 ASTM Standards:
fications.
C947 Test Method for Flexural Properties of Thin-Section
Glass-Fiber-Reinforced Concrete (Using Simple Beam
6. Procedure
With Third-Point Loading)
C1229 Test Method for Determination of Glass Fiber Con-
6.1 For plant manufactured product quality control
tent in Glass Fiber Reinforced Concrete (GFRC) (Wash-
purposes, spray the glass fiber reinforced material into the test
Out Test)
form using the same method as used in production. The
methods and conditions should be the same as for production
3. Significance and Use
materials except no mist coat or face mix should be used.
3.1 Flexural strengths, as determined by Test Method C947,
6.2 Trimoffexcessmaterialfromthesidesoftheformusing
are used for quality control and design of GFRC products and
a steel trowel.
may be used to verify compliance with specifications and to
6.3 Trowel surface smooth using a steel trowel.
collect data in research and development programs. It is,
therefore, important that coupons be prepared according to a 6.4 See Fig. 1 fo
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