Testing

Serpentine stone

Samples for multiple analysis: shear strength, drying shrinkage, water vapor transmission

Brick coupons with varying degrees of salts.

Fragments of Guastavino Akoustolith tile from:

• Washington National Cathedral
• Buffalo Central Terminal
• Nazareth Hall
• Cathedral of St. John the Divine
• Nebraska State Capitol
• Eglise de Notre Dame

Guastavino Akoustolith acoustical tiles and fragments used for compressive strength from the following sites:

• St. John the Divine (SJD)
• Eglise de Notre Dame (END)
• Buffalo Central Terminal (BCT)
• Nazareth Hall, University of Northwestern (NH)
• Washington National Cathedral (WNC)
• Nebraska State Capitol (NSC)

Bedding mortar, substrate, paint finishes, substrate, painted concrete.

Microsamples and salt tests from Dakota Sandstone

Ex-situ petrified wood fragments from Stump P-47 bonded with Araldite 2015 epoxy.

Sandstone