Читать книгу Monument Future - Siegfried Siegesmund - Страница 184

The tuffs were described using polarized-light microscopy. Bulk and material density, porosity (EN 1936:2006), and water absorption at atmospheric pressure (EN 13755:2008) were measured. Pore-size distribution was analyzed by mercury intrusion porosimetry (MIP) (ASTM D4404-84). Ultrasonic 133p-wave velocity was recorded by direct transmission method (EN 14579:2004). Strength parameters such as uniaxial compressive strength (UCS), tensile strength (ASTM D3967-16) were measured, and Young’s modulus of elasticity was also recorded (ASTM D7012-14). Durability was assessed by resistance to freeze-thaw (EN 12371:2001 with modifications) and resistance to salt attack (EN 12370:1999).