Sphinxstone
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Description
[Sphinx Acoustical Company] A cast acoustic building stone.
Synonyms and Related Terms
Applications== ==Working Properties== ==Risks== ==Forms and Sizes
Physical and Chemical Properties
Resources and Citations
- Scott Lynn Paden, constricute information June 2022.
materials and finishes at the Mellon Auditorium in Washington, DC. This Neoclassical hall by Arthur Brown, and built in 1934 is primarily comprised of an acoustic stone known as Sphinxstone and produced by the Sphinx Acoustical Company on which I can find no historical background. This cast composite stone was molded into the various shapes and profiles. It is comprised of mollusk shells with white Portland and is particularly susceptible to impact, especially along arrises. In the hall there are large sections that have been sheared off and many edges that have significant degradation
