Effect of sealants of the sound adsorption coefficients of acoustical friable insulating materials
Subtitle: by James L. Wayman and Mary K. Lory
Contributors: Naval Postgraduate School (U.S.)
Publisher: NavalPostgraduate School
Published: 1985
Place of publication: Monterey, California
Language: eng
Number of pages: 11
Subjects: Absorption of sound; Sealing compounds; Insulating materials; Acoustical properties
Other titles: NPS-53-85-0004.
Description: Acoustical friable insulating materials (AFIM), which often in the past contained asbestos, have been used for sound control since the mid 1930's. Because of their widespread use and the ease of fiber dissemination, friable asbestos materials are considered to be the major source of asbestos fiber contamination in the indoor environment. Encapsulation of asbestos materials with a commercial sealant product is one of several methods used to control potential asbestos exposure in rooms. A sealant product that preserves most of the acoustical properties of the material is preferred in this usage. AFIM sample materials were treated with 6 types of sealants and the effects on normally incident absorption coefficients from 100 to 2500 Hz were measured using a fixed, dual-microphone technique. 'Penetrating' type sealants were found to have a less detrimental effect on sound absorption than those of a 'bridging' type. Originator-supplied keywords include: Sound absorption coefficients.
Notes: "NPS-53-85-0004"--Cover.

Title from cover.

"October 1984"--Cover.

"Prepared for: The Naval Postgraduate School, Monterey, California 93943."

Includes bibliographical references (p. [10])

"Approved for public release; distribution is unlimited"--Cover.

Technical report; 1984.