Patent Document ID: 8534118
Application ID: 12761033
Patent Flag: 1

Claim One:
1. An apparatus for quality control of a process for producing concrete goods products, which apparatus is adapted to carry out measurements on the concrete goods products in an intermediate step of the process after shaping and compacting in the fresh concrete phase, wherein the apparatus comprises: a means for determining a measure of the bulk density of a test fresh concrete product from the intermediate step of the process, and a means for determining the gas permeability of the test fresh concrete product, wherein the means for determining the gas permeability comprises a chamber, that has an opening the edges of which can be sealingly placed against an area of the outer surface of the test fresh concrete product in order to close the opening, and wherein the means for determining the gas permeability further comprises a pressure generation means, with which a positive pressure or a negative pressure can be generated within the chamber, and a means for determining measure of the gas flow through the test fresh concrete product caused by the pressure difference, and wherein the apparatus is constructed such that: the test fresh concrete product can be disposed in a single measurement position in which all measurement values required for the determining of the measure of the bulk density and for the determining of the gas permeability with the means for determining a measure of the bulk density and the means for determining the gas permeability can be determined simultaneously, and the test fresh concrete product can be fixed in the measurement position by means of negative pressure.