Air Entrainment Meter – Type A
Further, when use of admixtures is made to increase workability of concrete, a check of the air content is required to ensure that the percentage of air remains between 1% and 2% for optimum performance of the concrete structure.
An Air Entrainment Meter, as specified in ASTM standards, is used to determine these percentages.
The meter consists of a pressure-tight flanged cylindrical measuring bowl, fitted with a removable flanged and conical cover assembly with a seal in between. The conical cover has an air valve and a pet cock for bleeding off the water. A cylindrical stand pipe, which is graduated in percent of air content, is fixed on the conical cover assembly.
Required pressure is applied to the specimen with the help of a pressure bulb. The whole assembly is mounted on a flat base. Each apparatus is supplied complete with a calibrating cylinder, pressure gauge, funnel, trowel and tamping bar.
Applicable Standards: EN 12350-7; ASTM C 231.
Supplied as standard with:
♦ Calibration Kit
♦ Rubber Mallet
♦ Tamping Rod
♦ Gauging Trowel
♦ Measuring Cylinder
♦ Straight Edge
-- Calibration Kit
-- Rubber Mallet
TO-345 Tamping Rod
TO-428 Gauging Trowel
-- Measuring Cylinder
-- Straight Edge
♦ TO-340-A Air Entrainment Meter Type A
♦ TO-341-A Air Entrainment 10lts Type A
♦ TO-342-A Air Entrainment 100lts Type A