A nuclear density gauge and test method is provided for measuring bulk density, especially of a cylindrically shaped sample such as asphalt paving material. The gauge comprises a base; a sample holder carried by the base and having a surface configured for receiving and holding a first generally planar...http://www.google.fr/patents/US6492641?utm_source=gb-gplus-shareBrevet US6492641 - Apparatus and method for gamma-ray determination of bulk density of samples
Apparatus and method for gamma-ray determination of bulk density of samples
