MATERIALS | TEST SETUP | TEST SAMPLES | THERMAL TREATMENT | INVESTIGATION TECHNIQUE | REF. |
Michelangelo’s David in Florance |
| 5.16 m high nearly 6 ton three different path lengths of 60 mm, 70 mm and 80 mm | Natural Temperature variations and wetting-drying cycles | Ultrasonic (55 kHz) maximum depth 20 mm | [88] |
Proconnesus marbleThasos Island/Greece Graeco-Roman style and date to the Roman period |
| The piece is 99.1 cm high, 35 cm wide and 31.5 cm thick. The height of the piece is 79 cm, width 56 cm, thickness39 cm. The hight of the piece is 97 cm, width 41 cm, thickness 37 cm. 130 cm high, 63 cm wide and 33 cm thick. 89 high, 41 cm wide, 31 cm thick. | visible surface cracks | Ultrasonic (250 kHz) Optical Microscopy X-ray diffraction for distances up to 20 cm | [89] |
Neuer Garten, Potsdam/Germany, Prie born Marble obelisk |
| Square ground plan and narrows from the bottom up, height: 5.2 m, the faces of the profiled plinth are within 1.2 degrees off the vertical. | Prieborn marble cube 65 mm, to analyzer the progressive deterioration of this marble subsequently 60˚C, 90˚C, 150˚C, 200˚C heated and cooled down. | Ultrasonic (46 kHz) Analyzer Microscope | [90] |
The sculpture Mercury and Psyche from Reinhold Begas, Berlin/Germany |
| Marble cube edge length of 10 cm |
| Ultrasound Image, maximal penetration depth of 50 cm X-Ray Diffraction, maximal penetration depth of 20 cm | [91] |
Naturally sugaring marbles from Monumental Cemetery in Bologna/Italy And Carrara marble |
| 12 × 9 × 3 cm Rectangular 30 × 30 × 10 mm Prismatic | Samples were produced at 400˚C for 1 h. | Electron Microscopy Mercury Intrusion Porosimetry Ultrasonic (55 kHz) | [92] |