Active Standard ASTM C1081 | Developed by Subcommittee: C17.03
Book of Standards Volume: 04.05
Historical (view previous versions of standard)
This specification covers splash bar and corrugated sheet type asbestos-cement products used as cooling tower fill. This specification does not apply to the following: drift eliminators or demisters, louvers, partitioning and casing panels; asbestos-cement pipes; and asbestos-cement flat sheet fill (heat exchange surfaces). Splash bars are classified into the following types: Type I, splash bars consisting of corrugated autoclaved pressed asbestos-cement sheets for the most demanding applications; Type II, splash bars consisting of corrugated pressed asbestos-cement sheets for intermediate service; and Type III, splash bars intended for less demanding service. The corrugated fill used shall be of Type A, which are non-autoclaved, compressed, corrugated sheet with a specified nominal thickness. Materials shall conform to specified manufacturing (autoclave, pressing, and nominal thickness), composition (cement:silica ratio, mineral diluents, cellulose, maximum organic content, and cement type), and performance (apparent density, water absorption, bending moment, freeze-thaw resistance, Harkort test, and free lime) requirements.
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 splash bar and corrugated sheet type asbestos-cement products used as cooling tower fill.
1.2 Drift eliminators or demisters, louvers, partitioning and casing panels are covered in Specifications C 1080
1.3 The values stated in the SI system are to be regarded as the standard. The inch-pound units in parentheses are for information only.
1.4 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 chrysoltile asbestos, refer to “Safe Use of Chrysotile Asbestos: A Manual on Preventive and Control Measures.”
1.5 The following precautionary caveat pertains only to the Test Method portion, Section 8, of this Specification: 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. See 1.4 for a specific safety hazard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C150 Specification for Portland Cement
C296 Specification for Asbestos-Cement Pressure Pipe
C428 Specification for Asbestos-Cement Nonpressure Sewer Pipe
C458 Test Method for Organic Fiber Content of Asbestos-Cement Products
C459 Test Methods for Asbestos-Cement Flat Products
C500 Test Methods for Asbestos-Cement Pipe
C1080 Specification for Asbestos-Cement Products Other Than Fill For Cooling Towers
C1082 Specification for Asbestos-Cement Flat Sheet for Cooling Tower Fill
C1096 Test Method for Determination of Wood Fiber in Asbestos Cement
D2946 Terminology for Asbestos and Asbestos-Cement Products
DIN StandardDIN274 Asbestzement-Weilplatten Available from Deutsches Institut fr Normunge, Beuth Verlaq GmbH, Auslieferung, Post Fach1107, D-1000 Berlin 30, Germany.
ICS Number Code 91.100.40 (Products in fibre-reinforced cement)