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Sound-absorbing slabs and structures based on granular materials (bound and unbound)Sound absorbing slabs and structures made up of bound or unbound granular materials are considered and how to manufacture these elements at the building site. The raw material is a single grain powder (sand, expanded blast furnace slag, etc.) that imparts to the end products an apparent porosity of 25-45% and an energy dissipation within the structure leading to absorption coefficients that can be compared with those of mineral wool and urethane.
Document ID
19740020016
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Petre-Lazar, S.
(Kanner (Leo) Associates Redwood City, CA, United States)
Popeea, G.
(Kanner (Leo) Associates Redwood City, CA, United States)
Date Acquired
August 7, 2013
Publication Date
June 1, 1974
Publication Information
Publication: The 4th Natl. Conf. on Acoustics, Vol. 1, C (NASA-TT-F-15376)
Subject Category
Physics, General
Accession Number
74N28129
Distribution Limits
Public
Copyright
Other

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