Fraunhofer Institute for Building Physics
Porosity, true density
Hygrothermics
| Measurement | Pore volume |
| Standard | DIN EN 1936 |
| Measurement object | Porous materials like brick, lime stone, sandstone, concrete, plasters and renders, insulation materials, etc. |
Technical data
| Sample size | Max. 1 cm³ |
| Apparatus | Heliumpycnometer AccuPyc II 1340 from Micromeretics |
Special features
| Accredited by DAkkS D-PL-11140-11-02 |
The laboratory has a flexible accreditation according to DIN EN ISO/IEC 17025 Test laboratory moisture, mortar, radiation, emmissions |
| Test report can be issued |
More information
- The true density of a material is defined as the mass of the dry material related to the volume of the solid matrix, which means minus the free accessible pore volume. The pore volume of the material sample is measured the heliumpycnometer. Helium is a inert gas and has a very small diameter, though all accessible pores of the material can be reached.
- The porosity of a material can be calculated by knowing the bulk and true density.