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  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.  
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are provided for information only.

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Status
Historical
Publication Date
30-Nov-2004
Current Stage
Ref Project

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ASTM C1228-96(2004) - Standard Practice for Preparing Coupons for Flexural and Washout Tests on Glass Fiber Reinforced Concrete
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C 1228 – 96 (2004)
Standard Practice for
Preparing Coupons for Flexural and Washout Tests on
Glass Fiber Reinforced Concrete
This standard is issued under the fixed designation C 1228; 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 4. Apparatus
1.1 This practice covers preparation of test coupons to be 4.1 Form—The form shall be rectangular in shape; made
used in tests of plant manufactured thin-section glass fiber from wood, fiberglass reinforced plastic (FRP), GFRC, or steel
reinforced concrete (GFRC). with dimensions of ⁄2 in. (13 mm) deep by 18 in. (450 mm)
1.2 This standard does not purport to address all of the wide and 48 in. (1200 mm) long.
safety concerns, if any, associated with its use. It is the 4.2 Steel Trowel, at least 20 in. (500 mm) long.
responsibility of the user of this standard to establish appro- 4.3 Serrated Roller, with handle.
priate safety and health practices and determine the applica- 4.4 Strike-Off Bar (screed), at least 20 in. (500 mm) long,
bility of regulatory limitations prior to use. for leveling and thickness control of specimens.
1.3 The values stated in inch-pound units are to be regarded
5. Sampling
as the standard. The values given in parentheses are provided
for information only. 5.1 Sampling shall be in accordance with governing speci-
fications.
2. Referenced Documents
6. Procedure
2.1 ASTM Standards:
6.1 For plant manufactured product quality control pur-
C 947 Test Method for Flexural Properties of Thin-Section
Glass-Fiber-Reinforced Concrete (Using Simple Beam poses, spray the glass fiber reinforced material into the test
form using the same method as used in production. The
with Third-Point Loading)
C 1229 Test Method for Determination of Glass Fiber methods and conditions should be the same as for production
Content in Glass Fiber Reinforced Concrete (GFRC) materials except no mist coat or face mix should be used.
6.2 Trimoffexcessmaterialfromthesidesoftheformusing
(Wash-Out Test)
a steel trowel.
3. Significance and Use
6.3 Trowel surface smooth using a steel trowel.
3.1 Flexuralstrengths,asdeterminedbyTestMethodC 947, 6.4 See Fig. 1 for cutting layout for flexural test coupons
are used for quality control and design of GFRC products and and washout test coupons.
may be used to verify compliance with specifications and to
7. Curing
collect data in research and development programs. It is,
7.1 Cure the sample panel us
...

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