Patent ID: 8278949

Claim:
A method of determining the passivating properties of a mixture ( 11 ) containing at lest two components, which are cement and water, including the steps of: taking three elements, each made up of an electrically conductive material, these elements being referred to as first electrode ( 2 ), second electrode ( 4 ) and third electrode ( 5 ), fixing at least one of these three electrodes on a support ( 3 ) in such a manner that they are electrically insulated reciprocally, and the mixture ( 11 ) is able to come in contact with at least one predetermined face situated on each electrode, these faces being referred to as first face ( 20 ), second face ( 40 ) and third face ( 50 ), selecting the first electrode ( 2 ) and the third electrode ( 5 ) and applying between these two electrodes, a direct current, referred to as first direct current, of predetermined intensity value, referred to as first intensity value, and predetermined polarity, referred to as first polarity, resulting in electrolytic reactions on the third electrode ( 5 ) for a predetermined duration (D 1 ), referred to as first duration, and then selecting the second electrode ( 4 ) and the third electrode ( 5 ), and measuring the voltage (V) between these two electrodes during said first predetermined duration (D 1 ), and storing the measurement for the variation of said voltage (V) during said first predetermined duration (D 1 ), comparing the variations in the voltage (V) between the second electrode ( 4 ) and the third electrode ( 5 ) during the first predetermined duration (D 1 ), with predetermined data defining at least whether or not a mixture ( 11 ) has passivating properties, and determining at least whether or not the mixture ( 11 ) has such passivating properties.