ASTM-C1325:2008 Edition

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C1325-08b Standard Specification for Non-Asbestos Fiber-Mat Reinforced Cementitious Backer Units

Published By	Publication Date	Number of Pages
ASTM	2008	5

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Categories: 91.100.40 - Products in fibre-reinforced cement, ASTM

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Description

ASTM C1325-08b

Historical Standard: Standard Specification for Non-Asbestos Fiber-Mat Reinforced Cementitious Backer Units

ASTM C1325

Scope

1.1 This specification covers non-asbestos fiber-mat reinforced cementitious backer units manufactured to be dimensionally stable and suitable as either an unfinished substrate (see Note 1) or as a substrate for decoration such as natural stone or tile on walls, floors, or decks in wet and dry areas. It is also suitable to be used as a substrate in the Application of Class PB Exterior Insulation Finish Systems (Practice C 1397), the Application of Direct-Applied Finish Systems (Practice C 1516), and the Application of Exterior Insulation Finish Systems Class PI (Practice C 1535).

Note 1—When used as an unfinished substrate, consult the manufacturer’s written installation literature for proper application details.

1.2 This specification is not applicable to asbestos-cement flat sheets (Specification C 220); non-asbestos fiber cement flat sheets for exterior applications such as claddings, facades, curtain walls, and soffits (Specification C 1186); gypsum backing board, coreboard, and shaftliner (Specification C 442); water-resistant gypsum backing board (Specification C 630); glass mat gypsum backing board (Specification C 1178); particle boards (Definitions D 1554); and discrete non-asbestos fiber cement interior substrate sheets (Specification C 1288).

1.3 Units—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.

Keywords

acceptance; air cured; appearance; density; edge straightness; finish; flexural strength; glass mat cement sheet; inspection; interior wet area application; length and width tolerance; mechanical properties; minimum equilibrium strength; minimum wet strength; moisture content; moisture movement; nominal length; nominal thickness; nominal width; non-asbestos fiber-mat; packaging; physical properties; pressure cured; sampling; shipping; squareness tolerance; storage; supplementary requirements; supplementary tests; surface burning characteristics; thickness requirements; thickness tolerance; third party certification; tolerance; type tests; warm water resistance; workmanship; Cement materials/applications–specifications; Fiber-mat reinforced cement substrate sheets; Glass mat cement sheet; Nonasbestos fiber-cement materials–specifications; Substrate sheets

ICS Code

ICS Number Code 91.100.40 (Products in fibre-reinforced cement)

DOI: 10.1520/C1325-08B

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents
2	Terminology Classification Composition and Manufacture Mechanical and Physical Properties Dimensions and Tolerances Workmanship
3	Inspection and Acceptance Product Marking Packaging and Storage Keywords

Additional information

Standard Title	C1325-08b Standard Specification for Non-Asbestos Fiber-Mat Reinforced Cementitious Backer Units
Published Code	ASTM
Publication Date	2008
Pages Count	5
ICS Codes	91.100.40 - Products in fibre-reinforced cement