ASTM C1355/C1355M-96(2015)

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-Sep-2015
• 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(2011) - Standard Specification for Glass Fiber Reinforced Gypsum Composites
• Effective Date: 01-Oct-2015
• Replaced By: ASTM C1355/C1355M-96(2020) - Standard Specification for Glass Fiber Reinforced Gypsum Composites
• Effective Date: 01-Jun-2020
• Referred By: ASTM C1381/C1381M-23 - Standard Specification for Molded Glass Fiber Reinforced Gypsum Parts
• Effective Date: 01-Oct-2015

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 2015)
Standard Specification for
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 tics by Means of a Barcol Impressor
E84Test Method for Surface Burning Characteristics of
1.1 This specification covers glass fiber reinforced gypsum
Building Materials
(GRG) composites having minimum properties and quality
E136Test Method for Behavior of Materials in a Vertical
suitable to allow the production of GRG parts for non-loading
Tube Furnace at 750°C
bearing, thin section, ornamental shapes for architectural
embellishment of interior building construction.
3. Terminology
1.2 The values stated in either inch-pound units or SI
3.1 Definitions:Definitions of terms shall be in accordance
(metric) are to be regarded separately as standard. Within the
with Terminology C11.
text, the SI units are shown in brackets. The values stated in
3.2 Definitions of Terms Specific to This Standard:
each system shall be independent of the other. Values from the
3.2.1 GRG composite, n—athinsectionlaminatemadefrom
two systems shall not be combined.
thecombinationofalphagypsumcement,glassfiber,additives
1.3 The text of this standard references footnotes which
and water.
provide explanatory material. These footnotes shall not be
3.2.2 GRG part, n—an individual molded component used
considered as requirements of the standard.
as architectural embellishment.
2. Referenced Documents
4. Materials and Manufacture
2.1 ASTM Standards:
4.1 Materials:
C11Terminology Relating to Gypsum and Related Building
4.1.1 Alpha Gypsum Cement—Alpha-calcium sulfate
Materials and Systems
hemihydrate-plaster which is noncombustible, has a low water
C472Test Methods for Physical Testing of Gypsum, Gyp-
demand, neutral (pH) or low alkalinity, and a purity of not less
sum Plasters and Gypsum Concrete
than 90% by weight of CaSO ·2H O.
4 2
C473Test Methods for Physical Testing of Gypsum Panel
4.1.2 “E” Glass Fiber—Chopped glass fiber strands or
Products
continuous strand mats of calcia-alumina silicate glasses con-
C947Test Method for Flexural Properties of Thin-Section
forming to Specification D578.
Glass-Fiber-Reinforced Concrete (Using Simple Beam
4.1.3 Water—Potable water.
With Third-Point Loading)
4.1.4 Additives—In accordance with the alpha gypsum ce-
D256Test Methods for Determining the Izod Pendulum
ment manufacturer’s specifications.
Impact Resistance of Plastics
4.2 Manufacturer’s Certification of Raw Materials:
D578Specification for Glass Fiber Strands
4.2.1 Alpha Gypsum Cement—Each lot of alpha gypsum
D696TestMethodforCoefficientofLinearThermalExpan-
cement shall be certified to be in compliance with 4.1 and 5.1.
sion of Plastics Between −30°C and 30°C with a Vitreous
4.2.2 Glass Fiber Reinforcement—Each lot of glass fiber
Silica Dilatometer
reinforcement shall be certified to be in compliance with
D2583Test Method for Indentation Hardness of Rigid Plas-
Specification D578.
4.3 Composite Preparation:
4.3.1 Prepare a flat, rectangular composite of sufficient size
This specification is under the jurisdiction of ASTM Committee C11 on
GypsumandRelatedBuildingMaterialsandSystemsandisthedirectresponsibility
to obtain specimens required in 5.2. The composite prepared
of Subcommittee C11.01 on Specifications andTest Methods for Gypsum Products.
shall be the same formula as the intended GRG part.
Current edition approved Oct. 1, 2015. Published October 2015. Originally
approved in 1996. Last previous addition approved in 2011 as C1355/
5. Mechanical Properties
C1355M– 96(2011). DOI: 10.1520/C1355_C1355M-96R15.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1 Neat Alpha Gypsum Cement:
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.1.1 Normal Consistency shall be not more than 30 when
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. tested in accordance with Test Methods C472.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C1355/C1355M−96 (2015)
5.1.2 Compressive Strength shall be not less than 6000 psi 7. Number of Tests and Retests
(41.4 MPa) when tested in accordance with Test Methods
7.1 The number of tests and type
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C1355/C1355M − 96 (Reapproved 2011) C1355/C1355M − 96 (Reapproved
2015)
Standard Specification for
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
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.
2. Referenced Documents
2.1 ASTM Standards:
C11 Terminology Relating to Gypsum and Related Building Materials and Systems
C472 Test Methods for Physical Testing of Gypsum, Gypsum Plasters and Gypsum Concrete
C473 Test Methods for Physical Testing of Gypsum Panel Products
C947 Test Method for Flexural Properties of Thin-Section Glass-Fiber-Reinforced Concrete (Using Simple Beam With
Third-Point Loading)
D256 Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics
D578 Specification for Glass Fiber Strands
D696 Test Method for Coefficient of Linear Thermal Expansion of Plastics Between −30°C and 30°C with a Vitreous Silica
Dilatometer
D2583 Test Method for Indentation Hardness of Rigid Plastics by Means of a Barcol Impressor
E84 Test Method for Surface Burning Characteristics of Building Materials
E136 Test Method for Behavior of Materials in a Vertical Tube Furnace at 750°C
3. Terminology
3.1 Definitions:Definitions of terms shall be in accordance with Terminology C11.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 GRG composite, n—a thin section laminate made from the combination of alpha gypsum cement, glass fiber, additives and
water.
3.2.2 GRG part, n—an individual molded component used as architectural embellishment.
4. Materials and Manufacture
4.1 Materials:
4.1.1 Alpha Gypsum Cement—Alpha-calcium sulfate hemihydrate-plaster which is noncombustible, has a low water demand,
neutral (pH) or low alkalinity, and a purity of not less than 90 % by weight of CaSO ·2H O.
4 2
This specification is under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and Systems and is the direct responsibility of
Subcommittee C11.01 on Specifications and Test Methods for Gypsum Products.
Current edition approved Dec. 1, 2011Oct. 1, 2015. Published June 2012October 2015. Originally approved in 1996. Last previous addition approved in 20062011 as
C1355/C1355M – 96C1355/C1355M(2006). – 96 (2011). DOI: 10.1520/C1355_C1355M-96R11.10.1520/C1355_C1355M-96R15.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C1355/C1355M − 96 (2015)
4.1.2 “E” Glass Fiber—Chopped glass fiber strands or continuous strand mats of calcia-alumina silicate glasses conforming to
Specification D578.
4.1.3 Water—Potable water.
4.1.4 Additives—In accordance with the alpha gypsum cement manufacturer’s specifications.
4.2 Manufacturer’s Certification of Raw Materials:
4.2.1 Alpha Gypsum Cement—Each lot of alpha gypsum cement shall be certified to be in compliance with 4.1 and 5.1.
4.2.2 Glass Fiber Reinforcement—Each lot of glass fiber reinforcement shall be certified to be in compliance with Specification
D578.
4.3 Composite Preparation:
4.3.1 Prepare a flat, rectangular composite of sufficient size to obtain specimens required in 5.2. The composite prepared shall
be the same formula as the intended GRG part.
5. Mechanical Properties
5.1 Neat Alpha Gypsum Cement:
5.1.1 Normal Consistency shall be not more than 30 when tested in accordance with Test Methods C472.
5.1.2 Compressive Strength shall be not l
...