Air Entainment Meter

Since recent studies have shown that uniformly distributed entrained air improves the properties of concrete in many ways and also considerably improves the workability of fresh concrete, their use in all major construction works involving mass concreting is now being widely adopted. Though entrainment of correct proportion of air gives the concrete good weathering resistance, too much of it affects the strength while too little causes rapid deterioration by weathering. As such, control of the air content in fresh concrete to optimum proportion before its placement through regular test checks by right type of equipment is very important.

We offers two different models of air entrainment meters; that is type A and type B for estimation of air content of concrete mixes having different maximum sized aggregates. They are pressure type instruments and use the principle of Boyle's law for indication of air content in the concrete.

Air Entrainment Meter, Cap. 0.005 cum.
IS . 9799-1981
Suitable for concrete containing 38 mm nominal max. sized aggregate. The apparatus consists of a measuring bowl of 0.005 cum. capacity. A flanged conical cover assembly fits over the bowl that ca n be sealed with clamps keeping a rubber gasket in between.
A water inlet valve with a spray tube & air bleed valve are fitted on the conical cover assembly.
A pressure gauge is mounted on the top of the stand pipe. A hand pump is provided for application of pressure. Supplied complete with one calibrating cylinder, a rubber mallet, one measure and one tamping rod.

Air Entrainment Meter, Cap. 0.01 cum.
IS . 9799-1981
Similar to above but the capacity of the bowl is cu m, for use with concrete containing 75 mm maximum sized aggregate.