SN6C – Bientôt disponible

METHODS OF CONTROL AND CALIBRATION

This reference material cement allows for the control and calibration of laboratory cement Blaine Apparatus according to the test standard CEN EN 196-6. For the other standards, these reference cements are very useful for regular checks to identify a drift.

DELIVERY

Each test using less than 5 gr, we decided to set up batches in boxes of 20 plastic bottles with a screw cap and sealed in an aluminium folio, easy to use, for 4 to 5 grams of cement powder. For the equipment with a larger cell (90 to 100g), sealed packaging of 100g is available.

In the event of a control on a wide band of Blaine, we will soon be able to offer you the Blaine KIT whose 8 cements range from 3090cm 2/g to 5362cm 2/g and are arranged in a case containing 8 vials of 15ml.

The certificate of analysis was carried out and checked by the offices of France-Ciments in Clichy

PARTICIPATION AND EXECUTION OF THE TESTS

An Inter laboratory testing campaign is organized each year by France-Ciments formerly ATILH. Participating in this campaign are the laboratories of the cement industry in France, Europe and more widely in the world, the laboratories of cement users and research and control centers in the field of construction materials.

This participation is mandatory for laboratories accredited by Cofrac for tests on cement. The tests are carried out according to standard methods where they exist and according to current and traditional methods where they do not.

STATIC ANALYSIS

Outlier removal is performed at the 98% level by the student test. Reiteration is set at this threshold, to keep only the values related to the “Normal or Gaussian” distribution and fully defined by the two parameters: mean and standard deviation. The coefficient of variation symbolized by ‘V’ is the ratio between the standard deviation and the mean ‘X’

SPECIFIC SURFACE

For the calibration of Blaine’s device, follow the requirements of standard NF EN 196-6 for any temperature corrections. To determine the volume of the compacted layer, it is not essential to use the reference cement, but it must be used systematically:

• After 1000 tries.
• In cases using another type of pressure fluid, another type of filter paper, a new gauge tube or a new perforated disc.
• In cases of systematic deviations of the secondary reference cement.