Rebound Hammer Test On Concrete Pdf

When using the rebound hammer the limitations of the test method should be recognized and taken into account.

Rebound hammer test on concrete pdf.

Academia edu is a platform for academics to share research papers. For this the rebound hammer is tested against the test anvil made of steel having brinell hardness number of about 5000 n mm2. Schematic of rebound hammer 3. Concrete methodsoftest part 2 rebound hammer 1 scope this standard covers the object principle apparatus and procedure of rebound hammer test method.

In the procedure of rebound hammer test the plunger of rebound hammer is pressed on the surface of concrete so that a spring controlled mass with a constant energy is made to hit the concrete surface. Procedure for rebound hammer test on concrete structure starts with calibration of the rebound hammer. The rebound hammer developed by schmidt provides an inexpensive and quick method for nondestructive testing of concrete. The test can thus be conducted horizontally on vertical surfaces or vertically upwards or downwards on horizontal surfaces if the situation demands the rebound hammer can be.

Impact energy for rebound hammer for different applications. 456 2000 specified the non destructive tests are used to obtain estimation of the properties of concrete in the structure the methods adopted include rebound hammer. 13311 part 2 for this test. Rebound hammer is 13311 part 2.

Bureau of indian standard did not published any standard for this test upto 1991. Moreover the best part of rebound hammer test is concrete can be tested in real time at the site instead of going to the lab without any damage. Procedure for rebound hammer test. For taking a measurement the rebound hammer should be held at right angles to them surface of the concrete member.

During the test when the plunger of the rebound hammer is suppressed against the surface of concrete a spring controlled mass with constant energy is made to hit the concrete surface to rebound back. At the same time a spring controlled mass rebounds back. The force of rebound which is a measure of surface hardness is measured on a graduated scale. Rebound hammer test is a non destructive ndt test of concrete and simple concrete test which is used to test the compressive strength of concrete without any damage.

Rebound hammer test procedure. Reference is 13311 part 2 1992 reaffirmed may 2013 non destructive testing of concrete methods of test rebound hammer.