AUTOBLAINE PREMIUM for automatic blaine tests of cements
AUTOBLAINE PREMIUM: automatic apparatus for determining the specific surface area of cement (in cm2/g) according to the Blaine permeability method.
The IBERTEST AUTOBLAINE PREMIUM equipment automatically runs the test to determine the specific surface of the cement by Blaine permeability method, even the sample weighing process, under the following testing standards:
- EN 196-6: “Methods of Testing Cement. Determination of fineness “.
- ASTM C-204: “Fineness of Hydraulic Cement by Air Permeametry Method”.
Determining the specific surface area by Blaine method is done primarily to control the uniformity of the milling process in cement factories, but also is applied to other powdery materials such as slag or fly ash.
Fundamentals of the Blaine test
In the Blaine permeability test, an amount of cement is introduced into a cylindrical cell, where it is compressed to a fixed volume, then passing a defined volume of air through the compacted cement.
The resistance to this air flow is inversely proportional to particle size, the larger the particles more gaps are created through which air can flow. Therefore, a finer cement exerts more resistance to air flow than a course cement. Through an experimental formula (Blaine method) can make an estimate of the surface area, which will be greater the finer the cement is.