Shree Ashutosh Industries

Description:

The Reinforced cage is first prepared on the collapsible reinforcing machine by hand process. The cage is then placed inside the pipe mould, which is then hoisted up and mounted horizontally on the Runner machine. It is rotated by 'speed variater Machine. The rotation is kept slow in the beginning and then the speed is increased. The concrete mixture is prepared material by mixing cement stone, metal and sends respectively. The cement concrete is fed into the moulds during rotation, which spreads inside evenly. The time required for completion of this operation depends upon the diameter and class of the pipe. The pipes are kept mould for 24 hours. On the following day the pipes are removed from the moulds and submersed in water in the curing tank for about 15-20 days depending upon the class of the pipe

Testing Procedure of Cement Pipes:

HYDROSTATIC TEST

The pipe to be tested is supported in such a way that longitudinal axis is approximately horizontal and the exterior surface except the supports are examined readily. The equipment for making the test is such that the specimen under test can be filled with water to the exclusion of air and subjected to the required hydrostatic pressure. The specimen shall be filled with water and the air expelled. Pressure shall be applied at a gradual rate until the specified test pressure is reached or beads of water on the pipe surface is seen, whichever occurs first.

THREE EDGE BEARING TEST

The test specimen is tested in a machine so designed that a crushing force is exerted in a true vertical plane through one diameter and extending the full length of the barrel of the pipe but excluding the sockets, if any. Load is applied at a uniform rate until the formation of 0.25mm wide crack or ultimate strength load, as may be specified, has been reached. The ultimate load will be reached when the pipe will sustain no greater load.

PERMEABILITY TEST

The Permeability is conducted in accordance with the method described in IS 3597. The final permeability shall not exceed 0.3cm3.

STRAIGHTNESS TEST

The Straightness test is conducted as described in IS 3597.

CUBE TESTING

The cube testing is also done to check the compressive strength of concrete cubes as per IS-516