Difference between revisions of "Sphinxstone"
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Revision as of 09:34, 28 June 2022
Description
[Sphinx Acoustical Company] An acoustic Cast stone produced by the Sphinx Acoustical Company. In 1934, Sphinxstone was used in the construction of the Mellon Auditorium in Washington DC. During restoration of the building, visual inspection of the deteriorated sections of the concrete blocks indicated the stones contain mollusk shells and white Portland. Other fillers and binders are unknown.
Additional images
Closeup of Sphinxstone column
Courtesy of Citadel DCA
Closeup of Sphinxstone column base
Courtesy of Citadel DCA
Closeup of Sphinxstone column base
Courtesy of Citadel DCA
Resources and Citations
- Lynn Scott Paden, Citadel DCA contributed information, June 2022.
- Richard Pieper, 'The Maintenance, Repair and Replacement of Historic Cast Stone' NPS, Technical Briefs #42 Link