This specification covers the requirements for flat asbestos-cement sheets designed for use in industrial, commercial, and general building purposes. Each sheet should be composed of a combination of asbestos fiber and Portland cement or Portland blast-furnace slag cement. Curing agents, water-repellent substances, mineral fillers, coatings, pigments, or minerals may be added to the material. All the materials should conform to the requirements on flexural strength, water absorption, workmanship, finish, color, and efflorescence.
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.
1.1 This specification covers asbestos-cement sheets in flat form designed for industrial, commercial, and general building purposes, of the following types:
1.1.1 Flat Sheets, Type F (Flexible)—An asbestos-cement flat sheet suitable for exterior and interior use, where a board having higher strength and density, smoother surface, greater flexibility, and lower moisture absorption is desired.
1.1.2 Flat Sheets, Type U (Utility)—An asbestos-cement flat sheet suitable for exterior and interior use, having sufficient strength for general utility and construction purposes, and where a board having maximum flexibility, highest density, smoother surface, and lower moisture absorption is not essential.
1.2 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.
1.3 Warning—Breathing of asbestos dust is hazardous. Asbestos and asbestos products present demonstrated health risks for users and for those with whom they come into contact. In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. For information on the safe use of chrysotile asbestos, refer to “Safe Use of Chrysotile: A Manual on Preventive and Control Measures.”
1.4 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C458 Test Method for Organic Fiber Content of Asbestos-Cement Products
C459 Test Methods for Asbestos-Cement Flat Products
Fed.Std.No.123 Marking for Shipment (Civil Agencies) Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
MIL-STD-129 Marking for Shipment and Storage
asbestos; abestos-cement flat sheet; sheeting; Asbestos-cement sheet--specifications; Flat asbestos-cement sheet;
ICS Number Code 91.100.40 (Products in fibre-reinforced cement)
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