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.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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 -30C and 30C 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 750C

Keywords

alpha gypsum cement; glass fiber reinforced gypsum; glass fiber reinforced gypsum composite; GRG; GRG composite ;

ICS Code

ICS Number Code 91.060.10 (Walls. Partitions. Facades); 91.100.10 (Cement. Gypsum. Lime. Mortar)

Citing ASTM Standards

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