ASTM C1355/C1355M-96(2006)

Standard Specification for Glass Fiber Reinforced Gypsum Composites

ABSTRACT
This specification covers glass fiber reinforced gypsum (GRG) composites suitable for producing GRG parts for non-loading bearings, thin sections, and ornamental shapes for architectural embellishment of interior building construction. Both the neat alpha gypsum cement and the resulting composite materials should conform to the specified physical and mechanical properties such as hardness, flexural strength, impact resistance, coefficient of linear thermal expansion, humidified deflection, surface burning characteristics, and nail pull resistance.
SCOPE
1.1 This specification covers glass fiber reinforced gypsum (GRG) composites having minimum properties and quality suitable to allow the production of GRG parts for non-loading bearing, thin section, ornamental shapes for architectural embellishment of interior building construction.
1.2 The values stated in either inch-pound units or SI (metric) are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be independent of the other. Values from the two systems shall not be combined.
1.3 The text of this standard references footnotes which provide explanatory material. These footnotes shall not be considered as requirements of the standard.

General Information

• Status: Historical
• Publication Date: 30-Apr-2006
• ICS: 91.060.10 - Walls. Partitions. Facades
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C11 - Gypsum and Related Building Materials and Systems
• Drafting Committee: C11.01 - Specifications and Test Methods for Gypsum Products

Relations

• Replaces: ASTM C1355/C1355M-96(2001) - Standard Specification for Glass Fiber Reinforced Gypsum Composites
• Effective Date: 01-May-2006
• Replaced By: ASTM C1355/C1355M-96(2011) - Standard Specification for Glass Fiber Reinforced Gypsum Composites
• Effective Date: 01-Dec-2011
• Referred By: ASTM C1381/C1381M-23 - Standard Specification for Molded Glass Fiber Reinforced Gypsum Parts
• Effective Date: 01-May-2006

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C1355/C1355M – 96 (Reapproved 2006)
Standard Specification for
1
Glass Fiber Reinforced Gypsum Composites
This standard is issued under the fixed designation C1355/C1355M; 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 D2583 Test Method for Indentation Hardness of Rigid
Plastics by Means of a Barcol Impressor
1.1 This specification covers glass fiber reinforced gypsum
E84 Test Method for Surface Burning Characteristics of
(GRG) composites having minimum properties and quality
Building Materials
suitable to allow the production of GRG parts for non-loading
E136 Test Method for Behavior of Materials in a Vertical
bearing, thin section, ornamental shapes for architectural
Tube Furnace at 750°C
embellishment of interior building construction.
1.2 The values stated in either inch-pound units or SI
3. Terminology
(metric) are to be regarded separately as standard. Within the
3.1 Definitions: Definitions of terms shall be in accordance
text, the SI units are shown in brackets. The values stated in
with Terminology C11.
each system shall be independent of the other.Values from the
3.2 Definitions of Terms Specific to This Standard:
two systems shall not be combined.
3.2.1 GRG composite, n—a thin section laminate made
1.3 The text of this standard references footnotes which
from the combination of alpha gypsum cement, glass fiber,
provide explanatory material. These footnotes shall not be
additives and water.
considered as requirements of the standard.
3.2.2 GRG part, n—an individual molded component used
2. Referenced Documents as architectural embellishment.
2
2.1 ASTM Standards:
4. Materials and Manufacture
C11 TerminologyRelatingtoGypsumandRelatedBuilding
4.1 Materials:
Materials and Systems
4.1.1 Alpha Gypsum Cement—Alpha-calcium sulfate
C472 Test Methods for Physical Testing of Gypsum, Gyp-
hemihydrate-plaster which is noncombustible, has a low water
sum Plasters and Gypsum Concrete
demand, neutral (pH) or low alkalinity, and a purity of not less
C473 Test Methods for Physical Testing of Gypsum Panel
than 90% by weight of CaSO ·2H O.
4 2
Products
4.1.2 “E” Glass Fiber—Chopped glass fiber strands or
C947 Test Method for Flexural Properties of Thin-Section
continuous strand mats of calcia-alumina silicate glasses con-
Glass-Fiber-Reinforced Concrete (Using Simple Beam
forming to Specification D578.
With Third-Point Loading)
4.1.3 Water—Potable water.
D256 Test Methods for Determining the Izod Pendulum
4.1.4 Additives—In accordance with the alpha gypsum ce-
Impact Resistance of Plastics
ment manufacturer’s specifications.
D578 Specification for Glass Fiber Strands
4.2 Manufacturer’s Certification of Raw Materials:
D696 Test Method for Coefficient of Linear Thermal Ex-
4.2.1 Alpha Gypsum Cement—Each lot of alpha gypsum
pansion of Plastics Between Ø30°C and 30°C with a
cement shall be certified to be in compliance with 4.1 and 5.1.
Vitreous Silica Dilatometer
4.2.2 Glass Fiber Reinforcement—Each lot of glass fiber
reinforcement shall be certified to be in compliance with
1
This specification is under the jurisdiction of ASTM Committee C11 on
Specification D578.
GypsumandRelatedBuildingMaterialsandSystemsandisthedirectresponsibility
4.3 Composite Preparation:
of Subcommittee C11.01 on Specifications andTest Methods for Gypsum Products.
4.3.1 Prepare a flat, rectangular composite of sufficient size
Current edition approved May 1, 2006. Published May 2006. Originally
approved in 1996. Last previous addition approved in 2001 as C1355/ to obtain specimens required in 5.2. The composite prepared
C1355M–96(2001). DOI: 10.1520/C1355_C1355M-96R06.
shall be the same formula as the intended GRG part.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5. Mechanical Properties
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 5.1 Neat Alpha Gypsum Cement:
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C1355/C1355M – 96 (2006)
5.1.1 Normal Consistency shall be not more than 30 when 7. Number of Tests and Retests
tested in accordance with Test Methods C472.
7.1 The number of tests and type of tests to be performed
5.1.2 Compressive Strength shall be not less than 6000 psi
shall be part of the purchase agreement. Data from prior tests
(41.4 MPa) when tested in accordance with Test Methods
showing compliance with Section 5 are permitted to be
C472.
s
...