Balloon Density Apparatus are used for the on-site determination of the density of well bonded soil according to the ASTM and French standards respectively.

It consists of a graduated cylinder of 1596 ml capacity housed inside an aluminium guard, a reversible rubber aspirator pump, a density plate 9 inches square, and 12 rubber balloons. The principle of operation is similar to the sand replacement but the hole is filled by a rubber balloon where water is pumped. The amount of water can be easily determined by the graduation of the cylinder.

Balloon Density Apparatus are used for the on-site determination of the density of well bonded soil according to the ASTM and French standards respectively.

It consists of a graduated cylinder of 1596 ml capacity housed inside an aluminium guard, a reversible rubber aspirator pump, a density plate 9 inches square, and 12 rubber balloons. The principle of operation is similar to the sand replacement but the hole is filled by a rubber balloon where water is pumped. The amount of water can be easily determined by the graduation of the cylinder.

• ASTM D2167
• AASHTO T205

A metal cylinder is filled with water which is then pumped into a rubber membrane, mounted on the base of the cylinder, which take up the hole previously made in the soil pavement. The water pressure is controlled by a pressure gauge and the volume of the balloon is measured on the graduated piston stem.

Two versions available: 3000- and 6000-ml capacity. The apparatuses are supplied complete with base plate, 3 locking clamps and 6 reinforced membranes.

Balloon Density Apparatus is supplied complete with complete with:
• A graduated cylinder, 1596 mL capacity housed inside an aluminium guard
• A reversible rubber aspirator pump
• Density plate
• Rubber balloons, 12pcs