Tensile Strength of Concrete| What is Tensile Strength of Concrete | Why Concrete Weak in Tension |Split Cylinder Test of Concrete | Tensile Strength Test Procedure
Take a sample and prepare a good quality mix of the concrete
Clean the cylinder mould and that the mould is free from dust and rust.
Fill the mould with the concrete mix in three layers by doing proper compaction with the help of the tamping rod.
Placing the Specimen in the Testing Machine The bearing surfaces of the supporting and loading rollers are wiped clean, and any loose sand or other material is removed from the surfaces of the specimen where they are to make contact with the rollers.
Proper curing of the mould should be done by covering it with wet gunny bags and cured it for at least 24 hours.
Take out the sample for testing and ensure that it should be completely dry to get accurate results.
The specimen is then placed in the machine in such a manner that the load is applied to the uppermost surface as cast in the mould, along two lines spaced 20.0 or 13.3 cm apart.
The axis of the specimen is carefully aligned with the axis of the loading device.
There should not be any packing is used between the bearing surfaces of the specimen and the rollers.
The load is applied without shock and increased continuously at a rate such that the extreme fiber stress increases at approximately 0.7 kg/sq cm/min that is, at a rate of loading of 400 kg/min for the 15.0 cm specimens and at a rate of 180 kg/min for the 10.0 cm specimens.
The load is increased until the specimen fails, and the maximum load applied to the specimen during the test is recorded.
The appearance of the fractured faces of concrete and any unusual features in the type of failure is noted.