CONCRETE TESTING EQUIPMENTS

CONCRETE PERMEABILITY APPARATUS

The design of concrete mix is aimed at maximum durability for the conditions where it is to be used. Ability to resist the flow of water through is one of the important durability characteristics. The permeability is determined on cement mortar and concrete specimens, either cast in the laboratory or obtained by cutting out cores from existing structures. The Permeability test is carried out as per the standard, IS:3085 and US Bureau of Reclamation, specifications.

High Pressure Permeability Test can be conducted on different size specimens using different cells. Each cell is made of steel and provided with a top plate and funnel at the bottom having gasket seals held in position through bolts and nuts. The concrete specimens are sealed in the cell to prevent any leakage along the side walls. The permeated water is collected in glass bottles attached at the bottom. Each test stall has its own control system, operating pressure gauges and valves. The pressure sight glass tubes are fully protected by a shatter proof panel The multi-unit per-meameters are so designed that all tests can be performed at the same time, using either the same head or varying head pressure, as each test stall is provided with its own pressure regulator and control. The control instruments are mounted on a sturdy welded structural stand. All multi-units are provided with end pressure gauges. Each unit is provided with chamber pressure gauges of 0-20 kg/cm2 and test pressure gauges of 0-15 kg/cm2. Pressures are applied using any available pressure line at the site or a compressor.