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Blaine Air Permeability Apparatus is used for determining the fineness of Portland Cement measures the specific surface area of fine materials in square centimeters per gram of test sample. By using this apparatus, a quantity of air is drawn through a bed of definite porosity. The rate of airflow is determined by the pore volume in the bed, a function of the size of particles.
Components of the apparatus are a stainless-steel test cell, plunger, perforated disk, calibrated U-tube manometer, and rubber aspirator and bulb, and are all mounted on a sturdy wood panel with a base. An 8oz bottle of red spirit manometer fluid, a package of filter paper, and a woodblock for holding the cell during filling are also included.
NIST Portland Cement #46h is required by ASTM and AASHTO standards for calibration of the MA-10.
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