Abstract
The paper discusses the assessment of mechanical properties of pressure sensitive materials through instrumented indentation. Materials with a wide range of modulus of elasticity and angle of internal friction values were tested through Knoop indentation in order to determine the mechanic properties. The natural stones that have been tested are Tuffeau de Maastricht Chalk, Pietra di Lecce Limestone, Pietra di Vicenza Limestone, Sander Sandstone, Grunnes Soapstone, Portland Island Limestone, Gioia Marble, Lorano Marble, Dionysos Marble and Serena Sandstone and also cement paste.