Cylindrical measures are used to determine unit weight of concrete or fine, coarse and mixed aggregates, as well as for void content of aggregates. Cast aluminum measures are immune to cement paste and can also be used for unit weight and yield of fresh concrete. It also indicates the angularity, spherical nature and workability of fine aggregate in a mixture.

Materials used to make Cylindrical Measures

These are usually made of heavy duty materials to withstand rough usage. They are generally made up of :

• Sheet Iron
• Aluminium
• Steel
• Metal

Salient Features

Some important features are :

• Cylindrical measures are calibrated and provided with handles.
• Consists of three measures, one each of 3 litres capacity, 15 litres capacity and 30 litres capacity.
• Provided with a tamping rod which has 16 mm dia and is 600 mm long. One of the ends of the rod is rounded.
• These are watertight with top and bottom true and even.
• Steel units are seam welded with bail handles; aluminum ones are machined to accurate dimensions and have integral cast handles.

Applications

There are mainly used for determining unit weight of concrete or aggregates. Some of the areas where they find application are:

• Testing crushed rock
• Cement & concrete industry
• Testing of crushed slag & crushed and uncrushed gravel
• Construction (Buildings, Roadways, etc.)